Ⅰ Ⅱ 2 Ⅲ 2 Ⅳ 耀

Transcription

1 面 向 2 世 纪 高 等 学 校 计 算 机 类 专 业 十 一 五 规 划 教 材 单 片 机 原 理 及 接 口 技 术 ( 第 二 版 ) 余 锡 存 曹 国 华 编 著 西 安 电 子 科 技 大 学 出 版 社

2 Ⅰ Ⅱ 2 Ⅲ 2 Ⅳ 耀

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7 .,, 0,.., : ()0 :0 2 9; (2), , 555.5= , N : N=dn- 0 n- +dn-2 0 n-2 + +d d d -m 0 -m n- = di0 i i=-m,di 0~90,m,n,i, = , R N, N=an- R n- +an-2 R n-2 + +a0 R 0 +a - R - + +a -m R -m n- = air i i=-m,a i 0 R-,m n,r R,

8 2 R i, R. R=2,, :0, N, N=an- 2 n- +an-2 2 n-2 + +a a a-m 2 -m n- = ai2 i i=-m, 0.0 (0.0) 2= R=8,, , (503) 8 (503) 8= R=6,,0 2 9 A B C D E F 6,,(3A8.0D) 6 (3A8.0D) 6= A 0 3 B C D E 5 7 F ,,

9 3 (0.0) 2,(46.2) 8,(2D.A4) 6 (0.0) 2= =2.625 (46.2) 8= = (2D.A4) 6= = N R,, () : R N,,, 2 (68) A 0 (68) 0=(00000) 2 (68) 0=(250) 8 (68) 0=(A8) 6 (2) : R(R=2,86) N, ( ),, 3 (0.645) 0 ( ) A E B.52

10 4 :(0.645) 0=(0.000) 2=(0.527) 8=(0.A5EB) 6 4 (68.645) (68.645) 0= ( ) 2= ( ) 8=(A8.A5EB) = 8,, 3 : 3 0,,, 5 (00.00) (00.00) 2= (53.32) 8 6 (23.45) (23.45) 8=( ) =6,, 4 ; 4 0,,, 4, 7 (00.0) (00.0) 2=(35.6) 6 8 (4A5B.6C) 6 4 A 5 B. 6 C (4A5B.6C) 6=( ) 2,, B(Binary) ; Q(Octal, Q O 0) ; D(Decimal) ; H(Hexadecimal) 0B 57Q 52D 3AH

11 ,,. :0+0=0;0+=;+0=;+=0( ) 00B+0B B+0B=000B 2. :0-0=0;-=0;-0=;0-=( ) 2 00B-B B-B=0B 3. :00=0;0=0=0;= 3 0B0B B0B=000B 4. :0/=0;/=

12 B/B B/B=0B.2.2.,, : 0 0=0,0 = 0=0, = 5 X=0B,Y=00B,X Y X Y=00B,, + : 0+0=0,0+=+0=,+= 6 X=00B,Y=00B,X+Y X+Y=0B, A 珡 A : =0,0=

13 7 7 A=00B, 珡 A 4. 珡 A=00B=000B,, : 0 0=0,0 =, 0=, =0 8 X=00B,Y=00B,X Y X Y=00B.3.3., 0,, 0,,X= -000B,Y= +000B, X :000B,Y 0000B,,000B,,-000B, ,,,[X],X X=+Xn-2Xn-3 XX0,[X] =0Xn-2Xn-3 XX0=X; X=-Xn-2Xn-3 XX0,[X] =Xn-2Xn-3 XX0=2 n- -X,X n-,xn-2 Xn-3 X X ( 8) [+5] = 000B;[-5] = 00B, X [X] [X] X, 0 X<2 = { n 2 n- -X, -2 n- <X 0, [+0] = B,[-0] = B, 0

14 8 8 :-27~+27 2., ;, [X] X=-Xn-2Xn-3 XX0,[X] =Xn-2Xn-3 XX0 :X=+03,[X] = [X] =000B;X=-03,[X] =00B,[X] =00000B, [X] X ; 0 X<2 = { n- (2 n- -)+X ; -2 n- <X 0 : ()8 :-27~+27 (2), , (mod), 2,,, 7,, 4,-4=7; 8,+8= 2+7=7, 2,8 4, -4=+8(mod2) n,x [X] X, 0 X<2 = { n- ;(mod2 n ) 2 n +X, -2 n- X 0,,n=8, [+75] =00000B [-73] = B B=00B [0] =[+0] =[-0] = B,0,, :,,:[X] = [X] + :[-30] = [-30] + =[+30] +=0000+=0000B8 :-28 ~+27,,.4,,, :.,

15 9 ;, :.. :.., 0, ;,,, 2.,, N N=±M 2 ±E,M,,E,,, E M E m, M n, N 2 -n 2-2m + N (-2 -n )2 2m -,,, : BCD ASCI.5. BCD,,,,,BCD(BinaryCodedDecimal) 0~90, 4 4 6, 0 842BCD, BCD.2 842BCD 842BCD 842BCD

16 BCD.2, BCD :.5.2 ASCII =( ) BCD 963 ANSI (AmericanStandardCodeforInformationInterchange), ASCI.3,,ASCI 7, 26 ;26 ;0 0~9;32 ;34,28.3 ASCII MSB654 LSB A B C D E F 0000 NUL DLE SP P p 000 SOH DC A Q a q 000 STX DC2 2 B R b r 00 ETX DC3 # 3 C S c s 000 EOT DC4 4 D T d t 00 ENQ NAK % 5 E U e u 00 ACK SYN & 6 F V f v 0 BEL ETB 7 G W g w 000 BS CAN ( 8 H X h x 00 HT EM ) 9 I Y i y 00 LF SUB : J Z j z 0 VT ESC + ; K [ k { 00 FF FS, < L \ l 0 CR GS - = M ] m } 0 SO RS > N n ~ SI HS / O o DEL ASCI,.3, ( 3, 4 ), 7 ASCI, W ASCI 00B(57H)

17 ASCI, 8,,, W ASCI,, 00B, W, 0, 000B,.6.6.,,., (CPU) (M) (I/O ) (BUS).. CPU CPU(CentralProcessingUnit), (ALU,AithmctiealLogicUnit), (Controler),,,, CPU (Register),, : :ALU, A:, PC: IR: PC,CPU (MPU,MicroProcessing Unit)

18 2 2. M (Memory), : ( )CPU,, ( ), CPU,, ( ),,, CPU, RAM(Random AccessMemory) ROM (Read Only Memory) (Write), (Read) RAM,,RAM ROM,,ROM (bit), 8, (byte), (Address)CPU, ( ) CPU, (Word),, (OpticalDisk), CD(CompactDisk),, 3. / (I/O ) / (I/O), I/O (: ), I/O I/O 4. (BUS) CPU CPU : DB(DataBus), AB(AddressBus) CB (ControlBus), CPU I/O, I/O CPU 6

19 3,CPU 2 6, 0000H~0FFFFH,.6.2 : ( ),, :,,,,, Z=X+Y SAM, 4K6,CPU 6 A SAM SAM : 000α ADDα A (A)+ (α) 000α LOADα A (α) 00α STOREα α (A),α,(α), SAM, X Y,X,, X Z=X+Y SAM : () X X (2) X Y, (3) Z SAM : LOAD X ADD Y STORE Z

20 4, 020H 02H 022H,,X Y Z A00H A0H A02H,.4.4 Z=X+Y 020H 8F00H LOAD X X 02H F0H ADD Y Y 022H 4F02H STORE Z Z A00H A0H A02H X Y Z, PC(ProgrameCounter) ( 020H), CPU,PC,, IR(InstrctionRegister),, ADDY : () ; (2) Y( A0H), A, ADDY,Y A ALU,, A,,,,,. 000B,0.0B,0.0B B,37.64Q,3A.4CH 3. 00,0.75, X=0000B,Y=00B, : X+Y,X-Y,X Y,X/Y 5. X=000B,Y=0000B, : X Y,X+Y,X Y, 珚 X 6. 8, :

21 BCD ASCI : Computer,X>

22 (SingleChip Microcomputer), CPU RAM ROM EPROM / I/O, A/D D/A / DMA,,, (Microcontroler), Intel 4,,.4 (97~974) 97,Intel 2000 / 4 Intel 4004, RAM ROM, MCS 4,, (974~978), 4KB,Intel 8048,Mostek (978~982), 64 KB, 6 /,,Intel 805 Motorola Z8NEC MPD7800

23 (982~990) Mostek , Intel , 6, 5. (90 ) CPU,CPU , 40 MHz, PWM WDT PCA DMA, NEC MPD7800,Mitsubishi M37700, Reckwel R6500/2 R65C29,Intel 8044 UPI 452 : () 4 8 6,4 8 6,4 (2)8 (3)6 ;32, ,,,,., 8, ,8, , 2.,, MOS CMOS HCMOS,, ; Flash, (ISP) (IAP),Philips P89C5RC2/P89C5RD2 32KB/64KB Flash, / ; 33 MHz~40 MHz, 50 M/s~00 M/s 3. CISC RISC MCS 5 CISC(ComplexInstructionSetComputer), RISC(ReducedInstructionSetComputer),, CPU,Microchip PIC2F PIC6F PIC7F PIC8F

24 8 4.,, RAM/ROM / / V/F A/D D/A, CPU CPU, USB CAN ISSC I 2 C, TCP/IP, Echelon Neuron350, 3CPU,, Philips P89C66, I 2 C 5. DSP DSP(DigitalSignalProcessor), μ nsp,6 DSP,, ICE(In CircuitEmulator) 6., API, C VHDL, ICE,, ISPIAP 7.,,,, Xemic XE830,.2V~5.5V, M/s, 200μA;, μa 2..3 () (2),,,,, ; (3), I/O, (4),,,,,,

25 2..4,,.,,, : (), (2),, (3),, :,, (4) ( ),,, :, ADC,, (5),, 2. () :, (2), (3),,, : 2.2 MCS 5 976, 70,

26 Intel MCS 5 Atmel Philips Winbond LG Cygnal Motorola Zilog Microchip Atmel AT89X5 Flash 8XC55289C66X MCS W78C5W77C5 GMS90/97 C805F SOC Z8 MCS PIC RISC AVR RISC 5 5,,,Intel 67%, MCS 5 54%, 2.2. MCS 5 MCS 5 0, :MCS 5 MCS 52, 2.2 ROM EPROM MCS , HMOSCHMOS CHMOS MCS 5 80C3 80C587C5 2.2 MCS 5 ROM /KB / I/O I/O ROM EPROM RAM MCS HMOS 80C3 80C5 4 87C CHMOS MCS HMOS 80C232 80C C CHMOS 803/805/875, 805, :805 4KB ROM,,

27 875 4KB EPROM,,, 803 ROM, EPROM 8032AH/8052AH/8752AH 803/805/875, 8052 ROM RAM 805,, / 80C3/80C5/87C5805 CHMOS,80C32/80C52/87C CHMOS, MCS 5, HMOS, MOS ; CHMOS, HMOS C, CHMOS,,87C5, MCS 5 Intel MCS ,5,, 805,Atmel AT89/AT87 PhilipsP89/P87 SST STC89/87 5, 8XC5 5, 烄 0 ROM X=烅 7 EPROM/OTPROM 烆 9 FlashROM 5,AT89, AT89 Atmel 8Flash Flash, AT89 803, 805, MCS 5 4KB 8KB Flash, 000 0~33 MHz,3, 28~256 RAM 32 I/O 2~36 / 6~8, AT89 4, AT89C5 AT89LV5 AT89C52 AT89LV52, AT89C5 AT89C52 805, KB 8KBROM Flash ;AT89LV5AT89C5, 2.7~6V AT89C05AT89C205 I/O,

28 2 AT89C5, AT89S5 AT89S52 AT89S53 AT89S8252, AT89S54KB Flash,AT89S52 AT89S82528KB Flash,AT89S532KB Flash, SPI AT89S8252 2KBEEPROM,, :9 SPI Watchdog,AT AT89 AT89C5 AT89C52 AT89C05AT89C205 AT89S5 AT89S52 AT89S53 AT89S8252 Flash/KB RAM/B I/O/ / / / EEPROM/KB 2 SPI Watchdog M / ,, MCS MCS 5 MCS 5 CPU RAM ROM / I/O 2., : 8CPU; 4KBROM EPROM(803ROM); 28 RAM ; 2 SFR; 48 I/O, P0 P2 /, 64KBROM 64KB RAM; ; 5,, 6 / ;

29 MCS CPU MCS 5 CPU, 2.3. ALU ACC B TMP PSW. ALU ALU,8 MCS 5,, 2. ACC(Accumulator) ACC A, 8,CPU,,A I/O, A A, 3. B B, A,, ;,

30 24 4. PSW(ProgrameStateWord) (PSW), : D7 D6 D5 D4 D3 D2 D D0 Cy AC F0 RS RS0 OV P PSW Cy(PSW.7): ( ) ( ),Cy=; Cy=0Cy, AC(PSW.6): 4 ( ) ( ),AC=; AC=0BCD AC F0(PSW.5): F0, RS(PSW.4) RS0(PSW.3):, RS RS0 RS RS0 RAM H~07H R0~R7 0 08H~0FH R0~R H~7H R0~R7 3 8H~FH R0~R7 OV(PSW.2):, OV=; OV=0 OV PSW.: P(PSW.0): ACC,P=; P=0P ( ),, PC, SP, DPTR,,. MCS 5,XTALXTAL2, 2.2(a) XTALXTAL2,.2 MHz2 MHz, 6 MHz,C C2 5pF~30pF, 2.2(b),XTAL,XTAL2,,, 2 MHz

31 (a) ;(b) 2., 2.3,,RESET( RST) 2 (24 ) 2.5 : 2.3 (a) ;(b) 2.5 ACC 00H TMOD 00H PC 0000H TCON 00H PSW 00H TL0 00H SP 07H TH0 00H DPTR 0000 TL 00H P0~P3 0FFH TH 00H IP xx000000b SCON 00H IE 0x000000B SBUF PCON 0xxx0000B

32 26 2.3(a),RC,RST, C R,, 6 MHz,C=22μF,R=kΩ2.3(b) 6 MHz, C=22μF,R=200Ω,R2=kΩ,, 3. CPU,, 4. PC(Program Counter) PC CPU, 6, 0000H~0FFFFH 64KB ROM, CPU,,PC,,PC (PC)+, CPU 5. SP(StackPointer) RAM,, SP, SP, RAM ( ),SP MCS 5,SP 07H 6. DPTR DPTR 6, DPH DPL 6 DPTR, 8 DPH DPL DPTR 6, 64KB,, 2.4 ROM RAM ROM ( ) ;RAM MCS 5 ROM RAM ; ; : (SFR) 5 MCS 5 2.4

33 MCS 5 (a) ;(b) ;(c). 805, (ROM) 0000H~0FFFH,4KB; 000H~FFFFH,60KB, 2.4(a) 0FFFH 000H, 875, 4KBEPROM, ;803, KB, 6, 0000H, 0003H 000BH 003H 00BH 0023H 5 2. MCS 5 RAM 2.4(b) RAM 256, 00H~FFH, :28 (00H~7FH) RAM ;28 (80H~FFH) SFR 28 RAM,00H~FH R0~R7 RAM RAM R0 00H 08H 0H 8H R 0H 09H H 9H R2 02H 0AH 2H AH R3 03H 0BH 3H BH R4 04H 0CH 4H CH R5 05H 0DH 5H DH R6 06H 0EH 6H EH R7 07H 0FH 7H FH

34 28 RAM 20H~2FH ( 2.7),6, 00H~7FH, 2.7 RAM RAM D7 D6 D5 D4 D3 D2 D D0 20H H 0F 0E 0D 0C 0B 0A H H F E D C B A H H 2F 2E 2D 2C 2B 2A H H 3F 3E 3D 3C 3B 3A H H 4F 4E 4D 4C 4B 4A AH BH 5F 5E 5D 5C 5B 5A CH DH 6F 6E 6D 6C 6B 6A EH FH 7F 7E 7D 7C 7B 7A RAM 30H~7FH, SFR 80~FFHMCS 5 8SFR,2 ;MCS SFR,26, SFR D7 D6 D5 D4 D3 D2 D D0 P0 P0 80H SP 8H DPL DPTR DPH 82H 83H /TCON 88H TF 8F / TMOD 89H GATE C/ 珚 T M M0 GATE C/ 珚 T M M0 TR 8E TF0 8D TR0 8C IE 8B IT 8A IE0 89 IT0 88 / 0TL0 / TL 8AH 8BH

35 2 29 / 0 TH0 8CH / TH 8DH D7 D6 D5 D4 D3 D2 D D0 P P 90H PCON 97H SMOD GF GF0 PD IDL SCON 98H SMO 9F SM 9E SM2 9D REN 9C TB8 9B RB8 9A TI 99 RI 98 SBUF 99H P2 P2 A0H A7 A6 A5 A4 A3 A2 A A0 IE A8H EA AF - - ET2 AD ES AC ET AB EX AA ET0 A9 EX0 A8 P3 P3 B0H B7 B6 B5 B4 B3 B2 B B0 IP B8H PT2 BD PS BC PT BB PX BA PT0 B9 PX0 B8 / 2 T2CON C8H TE2 CF EXF2 CE RCLK CD TCLK CC EXEN2 CB TR2 CA C/T2 C9 CP/ PL2 C8 /2 RLDL CAH /2 RLDH CBH / 2 TL2 / 2 TH2 CCH CDH PSW D0H Cy D7 AC D6 F0 D5 RS D4 RS0 D3 OV D2 - D P D0 A E0H E7 E6 E5 E4 E3 E2 E E0 B B F0H F7 F6 F5 F4 F3 F2 F F0 : / 2, MCS 52 RLDH RLDL RCAP2H RCAP2L, / 2 3. RAM, 64KBRAM, 0000H~0FFFFH, 2.4(c) CPU MOVX,,R0 RDPTR, RAM I/O, I/O 64KB

36 30 MCS 2.5 / I/O P0~P3,32 /, I/O 8, ;, I/O,, : - -.P0 P0~P3,, P0 P0 2.5P0, 2.5 P0 () CPU C=0, MUX, T2 珡 Q, P0 I/O C=0 0,T, P0, CP, D 珡 Q, T2,P0 P0 : Z,,, 珡 Q =0, TT2,,P0 (2) / MCS 5, P0 P2 P0 /, : P0 ; P0, C=, MUX, ( 珡 Q ) /, T T2, /

37 2 3 P0, Z 2.P P2P3 P P2 P3,, P 8 I/O, /,,, P2 8 I/O I/O, 8,P ,P2, I/O P3 P3 I/O,,, P3 P3 P3.0 RXD P3. TXD P3.2 INT0 0 P3.3 INT P3.4 T0 / 0 P3.5 T / P3.6 WR P3.7 RD P0 8LSTTL, 800μA;P P2 P3 4LSTTL, CMOS 2.6 MCS 5 HMOS (DIP),40, 2.6 CMOS, 44, 4 MCS 5 40 : () VCC (805/875) 5V,VSS (2)I/O P0.0~P0.7(P0 ),P.0~P.7(P ),P2.0~P2.7 (P2 ) P3.0~P3.7(P3) /, 2.5 (3) XTAL: XTAL2:,

38 MCS 5 (a) ;(b)803 (4) ALE/PROG: / CPU,ALE P0 8 /6 875, PSEN: EA/VPP: EA=,CPU ROM ;EA=0,CPU ROM, 875 EPROM,2V RST/VPD: 2, 2.7 CPU CPU,,CPU, CPU CPU,,, I/O RAM EPROM,

39 2 33. : () :, (2) : 2, (3) : 6 S~S6, 2,CPU (4) : CPU MCS 5, 2.MCS 5 / MCS 5 / 2.7,,CPU ROM,, ALE, SP2 S4P2, 2.7 MCS 5 /

40 34 S ALE,CPU, ALE,S4,, PC, S4P2, S6P2 2.7(a) (b) 2.7(c), 4,3 2.7(d) MOVX, S5, ALE,, CPU RAM,ALE 3. ROM RAM ROM, ALE, PSEN, P0 P2,P0 8,P ROM : ()SP2 ALE ; (2)P0 ROM 8,P2 ROM 88 S2,,ALE 8,,S2P2 ALE (3)S3P PSEN, ROM, ROM,P0 CPU, PSEN (4)S4P2,

41 2 35 RAM, ALE RD()WR(),P0P2, RAM RAM 2.9, : () ALE ALE ROM (2) ALE,P0 P2 RAM 8 8 (3) ALE, PSEN, SP RD, RAM,P0 RAM (4) ALE, ROM, 2.9 RAM RAM, WR RAM,, RAM RAM

42 36.89C5 87C5 80C580C3 2.MCS 5 I/O RAM 4.MCS 5.MCS 6.MCS 5 5 EA ALE PESN 5 R0~R MHz, ALE

43 MCS 5 3 MCS , MCS 5 255, : ; MCS 5, 3. 8, : CLR A E4H 2., : MOV A,#0H 74H0H 3.,, : MOV 40H,#30H 75H40H30H,, MCS 5 4, : [ :] [ ] [; ] 4 : :,, ;,, ( ),,,

44 38,,, MCS 5 42, 33 MOV, 3 2 MOV A,#20H, A #20H,,,,, 3.,,,, MCS 5, 7 : () ; (2) ; (3) ; (4) ; (5) ; (6) ; (7)., 2, : MOV A,# 3AH MOV DPTR,# 0DFFFH, 3AH A, 0DFFFH DPTR (0DFH DPH,0FFH DPL) 2.,, MCS 5, : () 28 (00H~7FH)

45 3 MCS 5 39 (2) : MOV A,3AH 3., 8 R0~R7 A B DPTR C : INCR0 4., R0 R, RAM ; RAM, R0 R : MOV A,@R0 5., DPTR PC, A, : MOVC A,@A+DPTR MOVC A,@A+PC 6. MCS 5, PC, 8,, -28~+27 : JC80H 7., RAM : CLRC MOV C,30H

46 MCS 5 42, 33, ( ) (MOV MOVC MOVX),, 49, 45 7 ;, 64, 45, 4,MCS 5 5 : () ; (2) ; (3) ; (4) ; (5), Rn 8 R0~R7,n=0~7 Ri 2 R0 R,i=0, direct 8 RAM, RAM (00H~ 7FH) (I/O 80H~0FFH) #data 8 #data6 addr6 6, LJMP LCALL, 64KB addr, AJMP,ACALL 2KB rel 8, SJMP,-28~+27 bit RAM DPTR, 6 A B, MUL DIV /, (X) X ((X)) X

47 3 MCS ,,, , :MOV,MOVX,MOVC,XCH,XCHD, PUSH,POP,SWAP 5 ; 3, I/O, PSW,,, 3. 3.,, 3. MCS 5 3. MOV A,Rn 2 MOV A,direct 2 2 MOV A,@Ri RAM 2 MOV A,#data 2 2 MOV Rn,A 2 MOV Rn,direct 2 24 MOV Rn,#data 2 2 MOV direct,a 2 2 MOV direct,rn 2 24

48 42 MOV direct,direct MOV direct,@ri RAM 2 24 MOV direct,#data 3 24 RAM 2 RAM 2 24 RAM 2 2 MOV DPTR,#data MOVC A,@A+DPTR ( ) 24 MOVC A,@A+PC ( ) 24 MOVX A,@Ri RAM (8 ) 24 MOVX A,@DPTR RAM (6 ) 24 RAM (8 ) 24 RAM (6 ) 24 PUSH direct 2 24 POP direct 2 24 XCH A,Rn 2 XCH A,direct 2 2 XCH A,@Ri RAM 2 XCHD A,@Ri 4 RAM 4 2 SWAP A A MOV A,Rn MOV A,direct MOV A,@Ri MOV A,#data ;A (Rn) ;A (direct) ;A ((Ri)) ;A data : A :MOV A,#0H, 0H A 2. Rn MOV Rn,A MOV Rn,direct MOV Rn,#data ;Rn (A) ;Rn (direct) ;Rn data : R0~R7 Rn RS RS0, 00H~07H 08H~0FH 0H~7H 8H~FH :MOV R0,A, RS RS0 00 ( 0 ), A R0( RAM 00H) 3. RAM SFR MOV direct,a ;direct (A)

49 3 MCS 5 43 MOV direct,rn ;direct (Rn) MOV direct,direct2 ;direct (direct2) MOV direct,@ri ;direct ((Ri)) MOV direct,#data ;direct data ;(Ri) (A) ;(Ri) (direct) ;(Ri) data MOV DPTR,#data6 ;DPTR data6 : RAM, RAM RAM 6 DPTR 4. A MOVX A,@DPTR MOVX A,@Ri ;A ((DPTR)) ;A ((Ri)) ;(DPTR) (A) ;(Ri) (A) : A RAM I/O,,P3.7 RD, ;,P3.6 WR, DPTR 6 P0(8)P2(8), P0,P0 Ri,P0 Ri PUSH direct POP direct ;SP (SP)+,(SP) (direct) ;direct ((SP)),SP (SP)- MCS 5 RAM, SP, : SP, SP RAM ; :SP RAM, SP :, PSW A DPTR SP60H PUSH PSW PUSH ACC PUSH DPL PUSH DPH,SP 64H,6H 62H 63H 64H PSW A DPL DPH, (SP 64H )

50 4 POP DPH POP DPL POP ACC POP PSW,SP 60H,64H 63H 62H 6H DPH DPL A PSW MCS 5, SP,, 6. MOVC A,@A+PC MOVC A,@A+DPTR ;A ((A)+(PC)) ;A ((A)+(DPTR)), PC,A PC ( ) 6, A PC, A 256,, DPTR, A DPTR, 6, A DPTR A,,, 64KB, 7. XCH A,Rn XCH A,@Ri XCH A,direct XCHD A,@Ri SWAP A ;(A) (Rn) ;(A) ((Ri)) ;(A) (direct) ;(A) 3~0 ((Ri)) 3~0 ;(A) 7~4 (A) 3~0 A ;, A 4 4, A 4 (Ri) RAM , 4 (3.2) 4 8,, 2 ;,, BCD, 8 :ADD ADDC INC SUBB DEC DA MUL DIV

51 3 MCS ADD A,Rn A (A)+(Rn) 2 ADD A,direct A (A)+(direct) 2 2 ADD A,@Ri A (A)+((Ri)) 2 ADD A,#data A (A)+data 2 2 ADDC A,Rn A (A)+(Rn)+(Cy) 2 ADDC A,direct A (A)+(direct)+(Cy) 2 2 ADDC A,@Ri A (A)+((Ri))+(Cy) 2 ADDC A,#data A (A)+data+(Cy) 2 2 INC A A (A)+ 2 INC Rn Rn (Rn)+ 2 (Ri) ((Ri))+ 2 INC direct direct (direct)+ 2 2 INC DPTR DPTR (DPTR)+ 24 DA A A 2 SUBB A,Rn A (A)-(Rn)-(Cy) 2 SUBB A,@Ri A (A)-((Ri))-(Cy) 2 SUBB A,direct A (A)-(direct)-(Cy) 2 2 SUBB A,#data A (A)-data-(Cy) 2 2 DEC A A (A)- 2 DEC Rn Rn (Rn)- 2 DEC direct direct (direct)- 2 2 (Ri) ((Ri))- 2 MUL AB AB (A) (B) 48 DIV AB AB (A)/(B) 48 (Cy) (AC) (OV) 3.3, 3.3 烄 #data direct ADD A, 烅 Rn Ri 烄 #data direct ADDC A, 烅 Rn Ri Cy OV AC

52 46 Cy OV AC 烄 #data direct SUBB A, 烅 Rn Ri MUL A B 0 DIV A B 0 DA A RRC A RLC A SETB C CLR C 0 CPL C ANL C,bit ANL C,/bit ORL C,bit ORL C,/bit MOV C,bit 烄 direct CJNE 烅 A,#data,rel Ri CJNE Rn,#data,rel :. ADD A,Rn ADD A,direct ADD A,@Ri ADD A,#data ;A (A)+(Rn) ;A (A)+(direct) ;A (A)+((Ri)) ;A (A)+data A, A 7(D7), Cy, 0 ; 3(D3), AC, 0 ; 6 7, 7 6, OV, 0,Cy ( ), ( 255), ( 27-28), OV,OV ( ), : , 27,

53 3 MCS ( )0,,, 6 7, OV,,-20-00, -220, -28, ,,,6 7, OV, 2. ADDC A,Rn ADDC A,direct ADDC A,@Ri ADDC A,#data ;A (A)+(Rn)+(Cy) ;A (A)+(direct)+(Cy) ;A (A)+((Ri))+(Cy) ;A (A)+data+(Cy),, Cy, 3. INC A INC Rn INC direct ;A (A)+ ;Rn (Rn)+ ;direct (direct)+ ;(Ri) ((Ri))+ INC DPTR ;DPTR (DPTR)+ : 0FFH,, 00H, 6 DPTR, 8 DPL, 8 DPH, 4. DA A A BCD 8, A BCD,,,, A 4 9 AC,, 4 6 ;,A 4 9 Cy,4 6 : BCD 3645, BCD 8, :

54 48 MOV A,#36H ADD A,#45H DA A :, 36H(BCD 36) A; B BH; A,4(0BH) 9, 6, BCD 8. SUBB A,Rn SUBB A,direct SUBB A,@Ri SUBB A,#data ;A (A)-(Rn)-(Cy) ;A (A)-(direct)-(Cy) ;A (A)-((Ri))-(Cy) ;A (A)-data-(Cy) : A, A, 7(D7), Cy, 0 ; 3(D3), AC, 0 ; 6 7, 7 6, OV, 0, Cy 0 2. DEC A DEC Rn DEC direct ;A (A)- ;Rn (Rn)- ;direct (direct)- ;(Ri) ((Ri))- : 00H,, 0FFH,, : MUL AB ;BA (A)(B) : A B, 8 A,8 B 0FFH, OV, 0 Cy 0, :

55 3 MCS 5 49 DIV AB ;A (A)/(B),B (A)/(B) : A B 8, A, B, 0 Cy OV B 0, A B, OV, Cy ( 3.4), CLR CPL ANL ORL XRL RL RLC RR RRC 3.4 CLR A 2 CPL A 2 RL A RLC A RR A RRC A ANL A,Rn A (A) (Rn) 2 ANL A,direct A (A) (direct) 2 2 ANL A,@Ri A (A) (Ri) 2 ANL A,#data A (A) data 2 2 ANL direct,a direct (direct) (A) 2 2 ANL direct,#data direct (direct) data 3 24 ORL A,Rn A (A) (Rn) 2 ORL A,direct A (A) (direct) 2 2 ORL A,@Ri A (A) ((Ri)) 2 ORL A,#data A (A) data 2 2 ORL direct,a direct (direct) (A) 2 2 ORL direct,#data direct (direct) data 3 24 XRL A,Rn A (A) (Rn) 2 XRL A,direct A (A) (direct) 2 2 XRL A,@Ri A (A) ((Ri)) 2 XRL A,#data A (A) data 2 2 XRL direct,a direct (direct) (A) 2 2 XRL direct,#data direct (direct) data 3 24

56 50. CLR A CPL A RL A RLC A RR A ; A 0,A 0 ; A,A ( 珡 A) ; A ; A ; A RRC A ; A : A, Cy AC OV 2. ANL A,Rn ANL A,direct ANL A,@Ri ANL A,#data ANL direct,a ANL direct,#data ;A (A) (Rn) ;A (A) (direct) ;A (A) ((Ri)) ;A (A) data ;direct (direct) (A) ;direct (direct) data :, 3. ORL A,Rn ORL A,direct ORL A,@Ri ORL A,#data ORL direct,a ORL direct,#data ;A (A) (Rn) ;A (A) (direct) ;A (A) ((Ri)) ;A (A) data ;direct (direct) (A) ;direct (direct) data :, 4. XRL A,Rn XRL A,direct XRL A,@Ri XRL A,#data XRL direct,a XRL direct,#data ;A (A) (Rn) ;A (A) (direct) ;A (A) ((Ri)) ;A (A) data ;direct (direct) (A) ;direct (direct) data :,

57 3 MCS , ( 3.5) 64KB ;2KB ; ; MCS 5, 0 :AJMP LJMP SJMP JMP ACALL LCALL JZ JNZ CJNE DJNZ 3.5 AJMPaddr 2KB 2 24 LJMPaddr6 64KB 3 24 SJMPrel JZrel 2 24 JNZrel 2 24 CJNE A,direct,rel CJNE A,#data,rel CJNE Rn,#data,rel DJNZ Rn,rel DJNZ direct,rel A 3 24 A 3 24 Rn 3 24 RAM ACALL addr 2KB 2 24 LCALL addr6 64KB 3 24 RET 24 RETI 24. AJMPaddr ;PC (PC)+2,PC 0~0 addr 2KB, (PC)+2, addr PC0~PC0,PC5~PC, AJMP 2KB

58 52 2. SJMPrel ;PC (PC)+2,PC (PC)+rel, (PC)+2,, PC 3. LJMPaddr6 ;PC addr 6,6 addr6 PC, 64KB, 4. ;PC (A)+(DPTR), A 8 6, PC, A DPTR, JZrel JNZrel ;(A)=0,PC (PC)+2+rel ;(A) 0,PC (PC)+2+rel A 0 ( ), 256 (-28~ +27), PC (PC)+N+rel, (PC),N ( ), N=2 MCS 5, 4 : CJNE A,direct,rel CJNE A,#data,rel CJNE Rn,#data,rel ;(A) (direct),pc (PC)+3+rel ;(A) data,pc (PC)+3+rel ;(Rn) data,pc (PC)+3+rel ;((Ri)) data,pc (PC)+3+rel :, ( ), Cy, 0, 0 DJNZ Rn,rel DJNZ direct,rel ;Rn (Rn)- ;direct (direct)-, 0 ( ),,

59 3 MCS ACALL addr ;PC (PC)+2 ;SP (SP)+,(SP) (PC) 7~0 ;SP (SP)+,(SP) (PC) 5~8 ;PC 0~0 addr 2KB, PC+2,6 (PCL,PCH ),SP 2, PC 5 PC5 ~PC addr (PC5~PC,A0~A0), PC, ACALL 2KB 2. LCALL addr6 ;PC (PC)+3 ;SP (SP)+,(SP) (PC) 7~0 ;SP (SP)+,(SP) (PC) 5~8 ;PC addr 6 6 addr6, PC+3, ( ),SP 2, 6 PC, LCALL 64KB 3. RET ;PC 5~8 ((SP)),SP (SP)- ;PC 7~0 ((SP)),SP (SP)- :, PC, 4. RETI ;PC 5~8 ((SP)),SP (SP)- ;PC 7~0 ((SP)),SP (SP)- RET, MCS MCS 5,, ( 3.6), 7, MOV CLR CPL SETB ANL ORL JC JNC JB JNB JBC

60 MOV C,bit Cy (bit) 2 2 MOV bit,c bit Cy 2 2 CLR C Cy 0 2 CLR bit bit CPL C Cy (Cy) 2 CPL bit bit (bit) 2 2 SETB C Cy 2 SETB bit bit 2 2 ANL C,bit Cy (Cy) (bit) 2 24 ANL C,/bit Cy (Cy) (bit) 2 24 ORL C,bit Cy (Cy) (bit) 2 24 ORL C,/bit Cy (Cy) (bit) 2 24 JCrel (Cy)=,,PC (PC)+2+rel 2 24 JNCrel (Cy)=0,,PC (PC)+2+rel 2 24 JB bit,rel (bit)=,,pc (PC)+3+rel 3 24 JNB bit,rel (bit)=0,,pc (PC)+3+rel 3 24 JBC bit,rel (bit)=,,pc (PC)+3+rel,bit , Cy CPU A, Cy RAM 20H~2FH 28 ( 00H~7FH) ( 80H~0FFH ) : (),0A8H; (2),IE.0; (3),EX0; (4), BIT : WBZD0 BIT EX0, WBZD0 EX0 4 IE 0( 0 EX0), 0A8H, EX0, WBDZ0. MOV C,bit ;Cy (bit) MOV bit,c ;bit (Cy) : Cy, 2. CLR C CLR bit ;Cy 0 ;bit 0

61 3 MCS 5 55 CPL C ;Cy (Cy) CPL bit SETB C SETB bit ;bit (bit) ;Cy ;bit 3. ANL C,bit ANL C,/bit 0, ;Cy (Cy) (bit) ;Cy (Cy) (bit) : 0, 0 ;,, bit (bit),, :ANL C,/ACC.0 ACC.0 0, C, C,ACC ORL C,bit ORL C,/bit ;Cy (Cy) (bit) ;Cy (Cy) (bit) :, ;,, 5. JCrel JNCrel JB bit,rel JNB bit,rel JBC bit,rel ;(Cy)=, PC (PC)+2+rel ;(Cy)=0, PC (PC)+2+rel ;(bit)=, PC (PC)+3+rel ;(bit)=0, PC (PC)+3+rel ;(bit)=, PC (PC)+3+rel,bit 0 :, ( );, 4, bit 0 MCS 5, MCS 5.MCS 5 2. RAM 59H 50H, A,R0 RAM 50H 5H MOV A,59H MOV R0,A MOV A,#00

62 56 MOV A,#25H MOV 5H,A MOV 52H,#70H 3.PSW CyOV Cy=OV= MOV A,#56H ADD A,#74H 4.MOVC MOVX 5.AJMP LJMP SJMP 6. SP 60H, RAM 30H 3H 24H 0H,,6H,62H,30H,3H,DPTR SP PUSH 30H PUSH 3H POP DPL POP DPH MOV 30H,#00H MOV 3H,#0FFH 7., 00H 0H P 8 I/O LOOP: LOOP2: CLR C MOV A,#66H JC LOOP CPL C SETB 0H ORL C,ACC.0 JB ACC.2,LOOP2 MOV P,A 8., MCS 5 ()R R0; (2) RAM20H R0; (3) RAM20H RAM20H ; (4) RAM000H RAM20H ; (5)ROM2000H R0; (6)ROM2000H RAM20H ; (7)ROM2000H RAM20H 9. : MOV A,#25H MOV R,#33H

63 3 MCS 5 57 MOV 40H,#AH MOV R3,40H ADD A,R ADDC A,@R3 ADDC A,40H 0. A=83H,R0=7H,(7H)=34H,,(A)= ANL A,#7H ORL 7H,A XRL A,@R0 CPL A. 4 BCD, 30H 3H 40H 4H (, ), 50H 5H 52H (52H ), 2., RAM 20H~50H 0AAH,, 5H 0H,, 5H 0

64 58 4 MCS 5,, 4., ( ), ( ),,,,, ORG : ORG nn,,nn6, nn, ORG : ORG 2000H MOV SP,#60H MOV R0,#2FH MOV R2,#0FFH ORG 2000H, 2000H H 782F

65 H 7AFF EQU : EQU :,,EQU, EQU,,EQU, : PA855 EQU 800H PA H DB : [ :] DB 8 :8,,DB 8, ASCI ( ASCI ): ORG 000H BUF: DB38H,7FH,80H BUF2: DB45H,66H ORG BUF 000H,DB 38H 7FH 80H 000H 00H 002H3,BUF2,,003H 004H 45H 66H DW : [ :] DW 6 DB, 6, 6,8,8, MCS 5 6 END : [ :] END END : END,END,END

66 60 4.2,,, () (2), ( ) (3), (4), (5),, 4.2.,, RAM 40H( ) 4H( ), 50H( ) 5H( ), 40H 4H : START:CLR C MOV R0,#4H MOV R,#5H ;Cy ; R0 ; R AD: MOV A,@R0 ; A ADD A,@R ; DEC R0 DEC R MOV A,@R0 ADDC A,@R RET ; ; ; ; A ; Cy ; 2 RAM40H 4H 8,, 50H : START:MOV R,#40H ; R

67 4 6 MOV A,@R ; ANL A,#0FH SWAP A INC R XCH A,@R ANL A,#0FH ORL A,@R MOV 50H,A RET ; ; ; ; ; ; ;, 4.2.2,, 4., (a),(b), 4. (a) ;(b) :JZ JNZ JC JNC CJNZ, 3 x y 8,x R0,y R, : 4.2 : 烄 + x>0 y= 烅 - x<0 烆 0 x=0 START:CJNE R0,#00H,SUL MOV R,#00H SJMP SUL2 SUL: JC NEG MOV R,#0H ;R0 00 ;,R 0 ;,(R0)<0, NEG ;(R0)>0,R 0H

68 62 SJMP SUL2 NEG: MOV R,#0FFH ;(R0)<0, R 0FFH SUL2: RET RAM STST2, RAM ST

69 4 63 : ST ST2 ST3 ORG 000H EQU 2000H EQU 200H EQU 2200H START: CLR C MOV DPTR,#ST BIG0: MOVX A,@DPTR MOV R2,A MOV DPTR,#ST2 MOVX A,@DPTR CLR C SUBB A,R2 JNC BIG XCH A,R2 MOV DPTR,#ST3 RET ; Cy ; ; ; ; ; ; ;, ; ; BIG: MOVX A,@DPTR ; SJMP BIG0 RET 3 4,, SUBB,, (Cy), 4.2.3,, CPU 4.4 : () :, (2) :,, (3) :,,, (4) :, : DJNZ

70 ;,, 5,, 50, 8000H, : CLEAR: CLR A MOV DPTR,#8000H MOV R2,#50 INC DPTR DJNZ R2,CLEAR RET ; ; ; ;, R2,,R2, R2=0,,8000H 50 6 RAM BLOCK LEN,, RAM SUM ( 8 ) BLOCK EQU 20H LEN EQU 30H SUM EQU 40H START: CLR A ; A MOV R2,#LEN ; R2

71 4 65 MOV R,#BLOCK ; R LOOP: ADD A,@R ; INC R DJNZ R2,LOOP MOV SUM,A RET ; ; ;, R,,R,,R2,DJNZ,,,,,, 7 0 MCS 5, 6MHz, 2μs,, 0 : DELAY:MOV R5,#00 DEL0: DEL: DEL2: MOV R6,#00 MOV R7,#248 DJNZ R7,DEL2 DJNZ R6,DEL DJNZ R5,DEL0 RET,, : (),, (2), (3), 8 RAM,BLOCK, LEN,,,, n-,,,,,, P2 ;R0 R ; R7 R6 ; PSW F

72 6 : ORG 000H START:MOV DPTR,#BLOCK MOV P2,DPH MOV R7,#LEN DEC R7 LOOP0: CLR F0 MOV R0,DPL; MOV R,DPL INC R MOV R6,R7 LOOP: MOVX A,@R0 MOV B,A MOVX A,@R CJNE A,B,NEXT SJMP NOCHA NEXT: JC NOCHA 4.5 ; ;P2 ; ; n- ; 0 ; ; ; ; ; ;, ; ;Cy =,

73 4 67 SETB F0 ;, ; XCH A,B NOCHA:INC R0 INC R EXIT: ; DJNZ R6,LOOP JNB F0,EXIT DJNZ R7,LOOP0 RET ;,, ; ;, ;, ;,,,, 9 ADC0809, EOC 803 P.7,EOC,,, : START:MOV DPTR,#addr ;0809 DPTR MOV A,#00H LOOP: JNB P.7,LOOP MOVXA,@DPTR ; 0809 ; P.7, ; 0 RAM 50H,,,, ;, : START:MOV R2,#0FFH MOV R0,#4FH LOOP: INC R0 INC R2 RET ; R0 ASCI RAM, ASCI 0DH, 4.2.4,,

74 68,, MCS 5 8 6, PC,,, DPTR 256, DPTR, A R0, (R0)=0 (R0)= (R0)=N : PR0; PR; PRN LP0: MOV DPTR,#TAB ; MOV A,R0 ADD A,R0 JNC LP INC DPH ;R0 2 ; ; LP: ; TAB: AJMP PR0 AJMP PR AJMP PRN TAB PR0,PR,,PRN 2KB, : MOV DPTR,#TAB MOV A,R0 MOV B,#03H MUL AB XCH A,B ADD A,DPH MOV DPH,A XCH A,B ; 3 ;

75 4 69 TAB: LJMP PR0 ; LJMP PR LJMP PRN ,,,,,,, 2. ACALL LCALL,, PC ( ACALL 2, LCALL 3), PC,, PC,,,,, MCS 5,, 2 RAM ASCI, RAM RAM40H, 50H 5H,, : MAIN: MOV R,#50H MOV A,40H SWAP A PUSH ACC LCALL HEASC POP ACC INC R PUSH 40H LCALL HEASC ;R ;A ; ; ; ;ASCI HEASC ;

76 70 POP ACC ; END HEASC:MOV R0,SP DEC R0 DEC R0 TAB: XCH A,@R0 ANL A,#0FH ADD A,#2 MOVC A,@A+PC XCH A,@R0 RET DB 30H,3H,32H, ;R0 ; ; ; A ; ;, HEASC ASCI,,, R0,,RET,, 4.2.6, LED,,,,, X Y, Y=f(X) MCS 5, : MOVC A,@A+PC MOVC A,@A+DPTR PC,A,, 256, 0 MOVC A,@ A+PC ADD A,#data,data MOVC A,@A+PC PC,, 256,,DPTR, 64KB, 3 RAM HEX 4, ASCI HEX

77 4 7 0~9ASCI 30H~39H,A~FASCI 4H~46H,ASCI ASCTAB : ORG 000H HEXASC:MOV A,HEX ANL A,#0FH ADD A,#3 MOVC A,@A+PC MOV HEX,A RET ASCTAB:DB 30H,3H,32H,33H,34H DB 35H,36H,37H,38H,39H DB 4H,42H,43H,44H,45H DB 46H ;, MOVCA,@A+PC, 3, 3 4, 0 A/D A/D, A/D,A/D 000H~3FFH, A/D A/D 20H 2H ( 20H, 2H ), 22H 23H ( 22H, 23H ) : FTMP:MOV DPTR,#TAB MOV A,2H CLR C RLC A MOV 2H,A MOV A,20H RLC A MOV 20H,A MOV A,2H ADDC A,DPL MOV DPL,A MOV A,20H ADDC A,DPH MOV DPH,A CLR A MOVC A,@A+DPTR ;DPTR ;(20H)(2H)2 ; + ;

78 72 MOV 22H,A CLR A INC DPTR MOVC A,@A+DPTR ; TAB: DW MOV 23H,A RET, 256, MOVCA,@A+DPTR DPTR 4.2.7,,, ASCI,,, 2 3 ASCI, 5 3 BCD RAM 40H, RAM 50H 5H 52H ( ), : HEXBCD:MOV A,40H MOV B,#00 DIV AB MOV 50H,A MOV A,#0 XCH A,B DIV AB MOV 5H,A MOV 52H,B RET 6 4 BCD RAM 40H~43H 4,4 0,, R2R3 : Dn0 n +Dn-0 n- + + D00 0 =( ((Dn0+Dn-)0+Dn-2)0+ )+D0 n=3, : ((D30+D2)0+D)0+D0, : BCDHEX:MOV R0,#40H MOV R,#03 MOV R2,#0 ;R0 ; R ;

79 4 73 LOOP: MOV MOV R3,A MOV A,R3 MOV B,#0 MUL AB MOV R3,A ;(R3)0 8 R3 MOV A,B XCH A,R2 ;(R3)0 8 R2 MOV B,#0 MUL AB ADD A,R2 MOV R2,A ;R20+(R30)8 R2 INC R0 ; BCD MOV A,R3 ADD A,@R0 MOV R3,A MOV A,R2 ADDCA,#0 ; MOV R2,A DJNZ R,LOOP RET 4 BCD 9999, 270FH,, 4.2.8,,,,,., 7 40H 0 50H 0 ( ) R0, R,,R5, : SUB: MOV R0,#40H MOV R,#50H MOV R5,#0 CLR C SUB:MOV A,@R0

80 74 2. SUBB INC R0 INC R DJNZ R5,SUB RET, 8 (R2R3)(R6R7), R4R5R6R7, 4.6 : 4.6 NMUL NMUL: MOV R4,#0 ; MOV R5,#0 CLR C MOV R0,#6 NMUL: MOV A,R4 RRC A MOV R4,A MOV A,R5 ;CyR4R5R6R7

81 4 75 RRC A MOV R5,A MOV A,R6 RRC A MOV R6,A MOV A,R7 RRC MOV R7,A JNC NMUL2 ;C MOV A,R5 ADD A,R3 MOV R5,A MOV A,R4 ADDC A,R2 MOV R4,A NMUL2: DJNZ R0,NMUL MOV A,R4 RRC A MOV R4,A MOV A,R5 RRC A MOV R5,A MOV A,R6 RRC A MOV R6,A MOV A,R7 RRC A MOV R7,A RET ;(R4R5)+(R6F7) (R4R5) ; 6 ; 68, 9 (R4R3), R2, R7R6R5 MCS 5 8 MUL,, (R4R3)(R2)=[(R4) 2 8 +(R3)](R2) =(R4)(R2) 2 8 +(R3)(R2) (R4)(R2)(R3)(R2) MUL, : NMUL:MOV A,R2 MOV B,R3 MUL AB ;(R3)(R2)

82 76 MOV R5,A ; R5 MOV R6,B ; R6 MOV A,R2 MOV B,R4 MUL AB ;(R4)(R2) ADD A,R6 MOV A,B ADDC A,#00H MOV R7,A RET ;(R3)(R2) (R4)(R2) ;(R4)(R2) Cy ; R7, ,, MUL 3.,,,,, ; 0,,,, n, n,,,,,,,,,

83 (R4R5R6R7) (R2R3), (R6R7), (R4R5),R4R5R6R7, R6R7,, R4R5 R2R3,, F0( ),,, ; 0,, A R, B, 6( ), F0,F0= (,7), 6, : NDIV: MOV A,R5 ; CLR C SUBB A,R3 MOV A,R4 SUBB A,R2 JNC NDIV ;, MOV B,#6 NDIV2: CLR C MOV A,R7 RLC A MOV R7,A MOV A,R6 RLC A MOV R6,A MOV A,R5 RLC A MOV R5,A XCH A,R4 RLC A XCH A,R4 MOV F0,C CLR C SUBB A,R3 MOV R,A MOV A,R4 SUBB A,R2 JB F0,NDIV3 JC NDIV4 NDIV3: MOV R4,A MOV A,R MOV R5,A ;, ;, 0 ; ; ;, ;,(Cy)=0 ;

84 78 INC R7 ; NDIV4: DJNZ B,NDIV2 CLR F0 RET NDIV: SETB F0 RET ;, ; F0=0 ; F0=. x y 50H 5H, x0+y, 52H 53H H RAM, 4 ASCI 0~9, BCD, BCD 2000H RAM R R0 R R2 R3 R4, 4.BUF, 6,, BUF2 5., RAM DATA 20 DATA , 0, 0,, ( BCD ) RAM BLOCK, LEN MAX 9. RAM 4H~43H 4, 40H 0. RAM BLOCK, RAM LEN RAM PCOUNT MCOUNT ZCOUNT. SQR(X A,A 5, R7) 2., DATA 50 RAM DATA

85 5 MCS MCS 5 5.,,.,,,,, CPU,,, 2. CPU, I/O 3.,,,CPU, CPU,,, CPU, CPU,, 4. (),,CPU

86 80, (2),,,, (3), (4),, (5), CPU, CPU 5.2 MCS 5 MCS 5, MCS MCS 5,8 5.,805 5 (8052 6), TCON SCON

87 5 MCS INT0 P3.2, /, S5P2 IE0 0 T0, TF0, INT P3.3, /, S5P2 IE T, TF, /, RI /TI,. TCON TCON / T0 T, 88H, 88H~8FH,5.2 TCON (MSB) (LSB) TF TR TF0 TR0 IE IT IE0 IT0 5.2 TCON 5.2 : TF: /,, TR:,, /, TF0: 0 TF TR0: TR IE: INT,, IT:, IT=,IT=0 IE0: 0 IE IT0: 0 IT 2. SCON SCON 98H, 98H~ 9FH, 5.3 (MSB) (LSB) SM0 SM SM2 REN TB8 RB8 TI RI 5.3 SCON

88 : SM0 SM: ; SM2: ; REN: ; TB8: 8; RB8: 8; 6 TI:, TICPU TI, RI:, RICPU RI, MCS 5 5(80526),,,, CPU,,,CPU, CPU, CPU IE,IE A8H, A8H~AFH, 5.4, (MSB) (LSB) EA X ET2 ES ET EX ET0 EX0 5.4 IE 5.4 : EA: EA=0, ;EA=, ET2: 2 ET2=0, ;ET2=, ES: ES=0, ;ES=, ET: ET=0, T ;ET=, T EX: EX=0, ;EX=, ET0: 0 ET0=0, T0 ;ET0=, T0 EX0: 0 EX0=0, 0 ;EX0=, 0 2. MCS 5,

89 5 MCS 5 83 IP IP, 0B8H, 0B8H~0BCH, 5.5 (MSB) (LSB) X X PT2 PS PT PX PT0 PX0 5.5 IP 5.5 : PT2: 2 PT2=, T2 ;PT2=0, T2 PS: PS=, ;PS=0, PT: PT=, T ;PT=0, T PX: PX=, ;PX=0, PT0: 0 PT0=, T0 ;PT0=0, T2 PX0: 0 PX0=, 0 ;PX0=0, 0 IP, 5(80526),,CPU : (), ; (2) ( ),,,,,,, IE0 TF0 IE TF RITI TF2EXF2

90 84, IE IP : MOV IE,#8FH MOV IP,#06H : CPU ; 0 / 0 / ; : / 0> > 0> / MCS 5,CPU (EA=),,CPU S5P2 S6, S, : () ; (2) (,, ); (3) RETI IE IP (, RETI IE IP,, ),, 2., : (), ; (2), PC ; (3) ( RITI ); (4) ( PC, MCS 5 5.3, TF0,CPU LCALL000BH,, PC,

91 5 MCS H T0 000BH 003H T T2 (8052) 00BH 0023H 002BH,, R0 R DPTR A, : ORG 0000H AJMP MAIN ORG 003H LJMPINT ORG 000H MAIN: ORG 000H INT: PUSH ACC PUSH DPH PUSH DPL PUSH R0 PUSH R ; ; POP R POP R0 POP DPL POP DPH POP ACC RETI : ()0000H, MCS 5, PC 0000H,, 0003H, ; (2), LCALL003H,003H 00BH( ), (3), RETI,

92 86 5.3,,, ( INT0) : JNB P3.2,$ ;INT0 ( ) JB P3.2,$ ;INT0 ( ) RETI ;,INT0, INT0,CPU 0,, JNB, INT0 (, ), RETI,,,, INT0 INT0,,, 3, CPU 2 MCS 5, 2,,, 5.6 INT0 4,, INT0,, P0.4~ P0.7,4, ~4 INT0: ORG 0003H LJMPINT0 PUSH PSW PUSH ACC JB P0.7,DV JB P0.6,DV2 JB P0.5,DV3 JB P0.4,DV4 GOBACK:POP ACC POP PSW RETI DV:

93 5 MCS DV2: DV3: DV4: AJMP GOBACK AJMP GOBACK AJMP GOBACK AJMP GOBACK ; ; 2 ; 3 ; 4

94 8 : ~4 4,, CPU, 0 :,,CPU,. 2.MCS 5 3. TCON SCON IE IP4 4. MCS 5. MCS 5 5, 6. CPU 7.MCS 5, 8. INT0 INT ( ) 9., 2 MHz, 300ns, 0.MCS 5 64KB

95 MCS 5 / 6 MCS MCS 5 6 / ( ),, 805 / 6. / /,, ;, / /, 8, TH TLT,TH0 TL0 T0 THTL TH0 TL0 6, / TMOD / TCON,TMOD 0~3,TMOD TMOD TCON /, TCON (TF0TF), /

96 90, TMOD TCON, SP,, 2, ( 2,, ), /2 2 MHz, μs, T0(P3.4)T(P3.5), ( S5P2,, ) S3P, 0, /24, :,,, M, N, X,X : :X=M-N :X=M- /T T=2 6.2 / 4,TMOD, TCON TMOD TCON. / TMOD TMOD 89H,,, T,4 T0 (MSB) (LSB) GATE C/ 珚 T M M0 GATE C/ 珚 T M M0 T T0 TMOD 6.2 TMOD )MM0 4, 4, 6.

97 6 MCS M M (TH 8 TL 5 ) 0 6 / T0 8,T 3 2)C/ 珚 T C/ 珚 T =, ;C/ 珚 T = 0, 3)GATE / GATE=, INT0(INT) TR0(TR), /, INTx GATE=0, TR0(TR), /, INT0(INT) 2. / TCON TCON, TF0 TF / T0 T,,, 0TF, TR TR0 / T T0,, /, / 4,TMOD MM0,, ( M) 0: MM0 00, 0,6 3, TL 5 TH 8,TL GATE=0, TCON TR0,TL0 TH0 3 ;GATE=, TR0=, INT0 GATE=TR0=,TH0+TL0 INT0,INT0, ;INT0,, INT0

98 (3 ) 3,, TCON TF0, 0 M 2 3 3, 3,3 8 TH0, TL0 N 000, X X=M-000= =792= B ,5 000, TH=0E0H,TL=8H : 0, 6,8 TH,8 TL 6.4,6 8 TH,8 TL, M (6 ) 2: 2 / 8,TL 8,TH, 6.5 TH,TL, TF, TH 8 TL 0, 2, 250μs, 2 MHz, X= M-N= ( )/=6, TH0, TL0 6, / T0 2,

99 6 MCS : 6.5 2( ) 3 T0 T,T 3, ( TR=0 ), 3 T0 3, / T0 8 TL0TH0 6.6,TL0 T0 (C/T,GATE,TR0,INT0 TF0), 0, 8,TH0 T TR TF,,, TH0 T,T 0~2,, 6.6 3( 8 ),T,T0 3, 8

100 /,MCS 5 /, 7 :TMOD TCON,T0 T, SP IE IP 0 2ms, 6 MHz / T0, P.0,2ms ms, msp.0 ms : mst0 N : =2 6 MHz=2μs N=ms 2μs= 500 : 0 3,T0 X X=M-N= =7692=E0CH, 3,8 TL0 5, 8 TH0,T0 TH0=0F0H,TL0=0CH TMOD :TMOD= B=00H (GATE=0,C/T=0,M=0,M0=0) TCON : TR0= IE : EA=, T0 ET0= : ORG 0000H AJMP START ORG 000BH AJMP TOINT ORG 0030H START: MOV SP,#60H MOV TH0,#0F0H MOV TL0,#0CH MOV TMOD,#00H SETB TR0 SETB ET0 SETB EA ; ;T0 ; ;T0 ; T0 ;T0 ; MAIN: AJMP MAIN ; TOINT: CPL P.0 MOV TL0,#0CH

101 6 MCS 5 95 MOV TH0,#0F0H RETI ms,p.0, 500 Hz, CPU,,,, P.0 500Hz, : T0 ; CPU T0, T0,, 0, 6, 3, 6 2,,, / T 6.7, HL2, VT,,,VT,P3.5/T, / T,,P3.3/INT /, S HL,,P3.3/INT T/ 6.7

102 96 () :TMOD=00000B=0D0H (GATE=,C/T=,M0M=0) TCON=00H (2)T,,, R0, (3) T,T : ORG 0000H AJMP START ORG 00BH AJMP TINT ORG 000H START:MOV SP,#60H ; ;T ; MOV TCON,#00H MOV TMOD,#0D0H MOV TH,#00H MOV TL,#00H MOV R0,#00H ; MOV P3,#28H SETB TR SETB ET SETB EA MAIN: ACALL DISP ORG 0A00H TINT:INC R0 RETI ; P3.5 ; T ;T ; ;, ; DISP: ; RET, CPU, M =(R0) (TH)(TL) 2 2, 0, 0,,8,, T 2,, 3 T /,TH0 T

103 6 MCS 5 97 TF TR 3, T 2,, P.0 5Hz ( 6 MHz), / T0 3, T0,TL0 0FFH, T0 0,TL0,, 3,TH0 8, P.0 5kHz P.0 5kHz, 00μsP.0 TH0 X=M-N=256-00/2=206 : MOV TL0,#0FFH MOV TH0,#206 MOV TL,#BAUD MOV TH,#BAUD MOV TMOD,#27H MOV TCON,#55H MOV IE,#9FH ;BAUD ;T0 3 ;TL0 ; T0 T, 0 ; ; TL0 (000BH ): TL0INT:MOV TL0,#0FFH RETI TH0 (00BH ): TH0INT:MOV TH0,#206 CPL P.0 RETI ; T MCS CPU,,,

104 98,,, 3 :, 2 :, 3 :,, : (), (2),,, ( ),,, 5~8,,,,.5 2 (, ), MCS 5 I/O, P3.0 P3., :P3.0 RXD,P3. TXD, , SBUF, SCON, SP IE IP, T PCON. SBUF SBUF, RAM

105 6 MCS H,, CPU SBUF,5 ;, SBUF,,, CPU,, 2. SCON SCON, 5.3 : SM0 SM:, f OSC,UART 6.2 SM0 SM f OSC /2 0 8 UART (T ) UART f OSC /64 f OSC / UART (T ) SM2: 2 3,SM2 =, 9 (RB8)0, (RI),SM2=,RI 0,SM2 0 REN:,REN=, ;REN=0, TB8: 8 2 3, 9,,,, RB8: ,SM2= 0,RB8 0, 3. PCON PCON 6.9 PCON 87H,, (MSB) (LSB) SMOD X X X GF GF0 PD IDL 6.9 PCON SMOD, SMOD=,, GF GF0:, PD:,PD=0,PD=

106 00 IDL:,IDL=0,IDL= PD,, RAM,, VCC, 0ms,, RAM , 4, SCON SM0 SM I/O 0: 0 /,, :,, P3.0(RXD),P3.(TXD), RXD TXD 0, f OSC /2, () 0,,, (D7 ),, TI,, /8 74LS LS64, 8 CLK 8 (2) 0 SCON,REN REN=0, ;REN=, 0, REN=RI=0, S6P2, 0, TXD,RXD

107 6 MCS 5 0, RXD,, RXD, 0, 7, SBUF, RI,, 8 / 74LS LS65 8,,, 8, RXD, 8 RXD SBUF 6. :, 8 P3.0(RXD),P3.(TXD) 0: (0),8 ( ) (), T SMOD () TI,CPU SBUF, TXD, / T 6 32, TI=,CPU, (2) RI, REN, 6 RXD, 6, 7 8 9,, 0,, : RI=0; 2 SM2=0 RB8,8 SBUF, RI=,CPU,,,

108 02 0, :,,SM : 2 3, 9 : (0), 8 ( ),0 (SCON TB8RB8), () 2 3, 2, f OSC /32f OSC /64; 3, T () 2 3 SBUF SBUF 8 SBUF, TB8 9, (0) TXD, TXD,, 9,,0 9,TB8,, 0,, TI=, 9 (TB8),, TB8, SBUF, TB8 (2) 2 3, 2 3 RXD,,CPU 6 RXD,6, FFH 6 6, 7 8 9, RXD (),, (0),, 0, 8 SBUF, 9 SCON RB8, RI= SBUFRB8 RI, : RI=0; 2 SM2=0 9,,9 TB8,8 SBUF :, 2 3 RB8 9,, SBUF RB8 RI, 6.5.4, 2 3,SM2, 9, RI,CPU ;

109 6 MCS , (RI=0), SM2=0,, 9 0, (RI=), SBUF, ( ) 2 3, SM2=,,, 9, 9 (RB8), RI,, SM2, SM2=,, 9 0, RB8 0 ( SM2=0) RI,, SM2=, 9 RB8=0,, T, /T () 0 /2, (2) 2 PCON SMOD : 2 = 2SMOD 64 SMOD=0, (/64)f OSC ;SMOD=, (/32)f OSC (3) 3 SMOD, T T, 2(8 ), T TH, 3 =T 2SMOD 32 = 2SMOD 32 f OSC 2(256-TH) 6.3 3,

110 T SMOD /MHz f OSC /MHz T C/T 0 M k k FFH 9.2k FDH 3 9.6k 4.8k 2.4k.2k FDH FAH F4H E8H DH H FEEBH, T,, MCS 5, 3, 200Hz, T 2, 6 MHz f OSC 2(256-TH) = 2SMOD f OSC 2(32/2 SMOD ) TH=256- SMOD=0, 60 6 TH= / =243=0F3H SMOD=, 60 6 TH= /2 =230=0E6H 6.6., : () SCON SM0 SM (2) 2 3, TB8 9 (3) 0, / SMOD, 3, T

111 6 MCS LS65 8, 8, K 6.3 K, 8, 6.3, 0, SCON REN, REN K 805P.0, : START:JB P.0,$ SETB P. CLR P. ; K, ;65 ; MOV SCON,#0H ; 0 JNB RI,$ CLR RI MOV A,SBUF SJMP START ; RI ;,RI ; ; A ; RAM 40H~4FH 2,TB8 ;, 2, 60H~6FH 6.4

112 06 : ( ): MOV SCON,#80H MOV PCON,#00 MOV R0,#40H MOV R2,#0H ; 2 ;SMOD=0, ; ; LOOP: MOV A,@R0 ; MOV C,P MOV TB8,C MOV SBUF,A ; TB8 ; WAIT: JBC TI,NEXT ; TI SJMP WAIT NEXT: INC R0 ; DJNZ R2,LOOP RET ( ): MOV SCON,#90H MOV PCON,#00H MOV RO,#60H MOV R2,#0H ; 2, ;SMOD=0 ; ; LOOP: JBC RI,READ ; RI SJMP LOOP READ: MOV A,SBUF ; MOV C,P JNC LP0 ;C LP0 JNB RB8,ERR ;RB8=0,RB8 PERR AJMPLP LP0: JB RB8,ERR ;RB8=,RB8 PERR LP: ;RB8=P, INC R0 DJNZ R2,LOOP RET ERR: ;.805 /,,

113 2. /, 3. 6 MHz, T0 500μs, , 6 MHz, P.7 5Hz, 5., 2 MHz, / T0 20ms,T 00,,: () (2) (3) / T0 T 2s 6. T 2 T 2,, 6 MHz, 7. REN T RI, , A RAM 60H~6FH B RAM 60H~6FH 9. MCS 6 MCS I/O, 6,

114 08 7, I/O, :,, A/D, ;,,,, ROM RAM,,, : () ; (2) ; (3) / ; (4) ( / / ); (5)A/D D/A 7. MCS 5, I/O, MCS 5 ALE ALE,P0 A7~A0, CPU,ALE, P0, ALE ALE P0, P0 7. MCS 5

115 MCS 5 74LS273 74LS377 74LS ,7.2 (a) (b)(c) 74LS LS273, LS , 74LS373, OE, G, ;G, 8, G 74LS2738D,,D, ALE 74LS273CLK,CLK +5V, A/D,, I/O TTL,,

116 0 TTL, ; MOS,MOS,.,,74LS244 74LS244,,,74LS24574LS245, DIR,DIR= (An Bn),DIR=0 (An Bn) 74LS244 74LS (a) ;(b) LS24474LS (a)p2 ;(b)p0 P2 8, 74LS244 G 2G,P2 P0 74LS245, 珡 G, 805RDPSEN DIR, RDPSEN,74LS245,

117 7 7.2 MCS 5 64KB, KB, KB, 803, MCS 5, 64KB, (28B), MCS MCS 5 MCS 5 :ALE(8 )PSEN( ),P0 P2 (PCL PCH), P0 ALE, 2 2.9,MCS 5 CPU,ALE, PSEN, CPU,, EPROM E 2 PROM PAGEDEPROM KEPROM 2.EPROM EPROM, Intel 276(2K 8 ) 2732A(4K8 ) 2764A(8K8 ) 2728A(6K8 ) 27256(32K8 )2752(64K8 ), 20,

118 2 276EPROM276 2K8, +5V, 252mW, 32mW, 450ns27624, , CE OE VPP VCC I/O0~I/O7 L L 5V 5V ( ) H X 5V 5V H H 25V 5V ( ) L L 25V 5V L H 25V 5V :,

119 A0~A0 0,,, 2 =2048, P2.7~P2.3 P2.2~P2.0 P0.7~P0.0 A5~A A0~A8 A7~A H( ) ~ ~ ~ FFH( ) 3.E 2 PROM2864A E 2 PROM CPU,,EPROM RAM Intel2864A 8K8 E 2 PROM, +5V, 40mA, 60mA,24 7.8, A (a) ;(b) 2864A 4, A CE OE WE I/O0~I/O7 L L H L H L H X X X L X X X H

120 4 () :2864A EPROM (2) :2864A, (3) :,,,,,CPU 2864A A RAM,CPU RAM, RAM, RAM RAM, RAM MCS 5. RAM 7.0, WR RD PSEN, 0000H~0FFFFH, I/O, I/O

121 MCS 5 MCS 5 / RAM,P2 8,P0 8 ALE 8,P0,RD RAM, P0,CPU RAM,ALE,WR,P0 RAM 2. RAM 803, RAM, RAM, 6264, RAM 62648K8, CMOS, +5V, 200mW, 200ns,28, 7. : A0~A2:3 ; I/O0~I/O7: ; CE: ; CE2: 2; OE: ; WE: , WE CE CE2 OE D0~D DIN 0 0 DOUT

122 RAM 6264A0~A23 P2,6264 D0~D P0,6264OEWE803RDWR,CEP2.7,CE2,62648KB ( A4A3 ),6000H ~7FFFH 6000H DATA, : MOV A,#DATA MOV DPTR,#6000H 7FFFH, : MOV DPTR,#7FFFH MOVX A,@DPTR EPROM RAM,

123 7 7 EPROM ROM 2764A 64K8 EPROM, CPU MOVCA,@A+DPTR EPROM,P2 P0,8 2764, :. P2 P0,, 8KB 3 A2~A0, CE K8 EPROM 7.3 : A5 A4 A3 A2~A0 # C000H( ) ~ ~ ~ 0 0DFFFH( ) 2# A000H( ) ~ ~ ~ 0 0BFFFH( ) 3# H( ) ~ ~ ~ 0 7FFFH( ),,, ;, 2.,

124 8,, 3/8 74LS38 (), (2),,,, , 0000H~3FFFH () 0000H ~ 3FFFH 6KB, = = 6KB 8KB = 2 () (2) A5 A4 A3 A2 A0 # H ~ ~ FFFH 2# H ~ ~ 0 0 3FFFH (3) / MCS 5, P P3

125 7 9, I/O A IO 8255A 38 I/O, PA PB PC PC 4 4, : / ;2 / ;3 PA.8255A 8255A A (a) ;(b) 8255A /, / 8 () A B C A : 8 / 8 B: 8 / 8 C : 8 / 8,A B /,C / C 4, 4, A B, (2), A, B,

126 20 A A C (PC7~PC4)B B C (PC3~PC0) (3) 8, 8255, (4)// CPU RD WR RESET A A0,, CPU CPU A CS A A0 RD WR CPU 0 0 A 0 A 0 B 0 B 0 ( ) 0 C 0 C 0 0 A 0 A 0 B 0 B 0 C 0 C A 40, 7.6, : D7~D0: ; PA7~PA0:A / ; CS: ; PB7~PB0:B / ; RD: ; PC7~PC0:C ; WR: ; A,A0: ; VCC:+5V ; GND: ; RESET: A CPU, 7.6 () 0: / PA,PBPC (2) : / 3, A A PC7~ PC4,A,PC7~PC4 / B B PC3~PC0, C 8255A CPU

127 A (a) 0;(b) ;(c) 2 (3) 2: A 2,,A 8, C 5 PC7~PC3 A / C 2, A C (A B) C 2( A ) PC0 INTRB INTRB I/O I/O PC IBFB OBFB I/O I/O PC2 STBB ACKB I/O I/O PC3 INTRA INTRA INTRA INTRA PC4 STBA I/O STBA PC5 IBFA I/O IBFA PC6 I/O ACKA ACKA PC7 I/O OBFA OBFA

128 I/O C / : ()STB(Strobe), (2)IBF(InputBuferFul) (3)INTR(InterruptRequest), STB=IBF=,8255A CPU INTR=CPU,RD INTR 0, 7.4, : ()ACK(Acknowledge), ACK=0, CPU 8255A (2)OBF(OutputBuferFul), OBF=0, CPU 8255A, (3)INTR, INTR=,CPU, CPU,CPU 8255A A 8255A, C ) 8255A 3,,, A, 2,C, C, D 0 D 3

129 7 23 2) C / C, C /,, A C /,C PCi, D0, C D3D2D D7=0 /, 8255A, 8255A D7, C / A 0,B,C 4PC7~PC4,C 4PC3~PC0 : MOV R,#03H MOV A,#9CH ;03H 8255A ;8255A 9CH ; 8255A A A A A A B C 00H 0H 02H 03H C PC 3,PC 5 0, : MOV R0,#03H ;8255A

130 24 MOV A,#07H ; PC3 MOV A,#0AH ;PC3= ;PC5=0 ;PC50 : 0AH PC5=0 PC3= A 8255A P0.7, 803 PC7, BUSY=,,STB, A A B C 7CH 7DH 7EH 7FH A 8255A OBF, STB 8255A 0,PC0 STB PC7,PC0, : 0000B=8EH RAM20H 80 : MOV R0,#7FH MOV A,#8EH MOV R,#20H MOV R2,#50H ;R0 ; 8EH ; ; RAM R ; LP: MOV R0,#7EH ;R0 C LP: MOVX A,@R0 JB ACC.7,LP MOV R0,#7CH MOV A,@R ;PC7 BUSY ; ; A ;RAM ; 8255A INC R ;RAM MOV R0,#7FH ;R0

131 7 25 MOV A,#00H ;PC0 ;PC0=0, STB MOV A,#0H ;PC0 ;PC0=, STB DJNZ R2,LP IO ;, RAM, 8 6 I/O 4,MCS.855 5, (b), : () : 2568 RAM (2)I/O : a. A, 8 I/O PA0~PA7 b. B, 8 I/O PB0~PB7 c. C, 6 I/O PC0~PC5 d. 8, e. 8, (3) / : 4 / , 7.2(a)

132 : AD0~AD7 / IO/ 珨 M RAM I/O CE,ALE, RD,WR RESET, RESET 5μs,855,3 I/O TIMERIN,TIMEROUT,PA0~PA7 PB0~PB7 A B /,PC0~PC5 C / VCC=+5V, VSS RAM I/O 855 RAM I/O RAM, 8 CEIO/ 珨 M CE=0,IO/ 珨 M=0,8 00H~FFH RAM ;CE=0,IO/ 珨 M=, 8 3(A2AA0), A7 A6 A5 A4 A3 A2 A A A 0 0 B 0 C I/O 855I/O : I/O I/O ) I/O I/O,,855 A B C 2) I/O I/O, 855 A B, C : ()BF:I/O,, (2)STB:,, (3)INTR:,, A B, ABF,ASTB,AINTR BBF BSTB BINTR C, 7.7

133 PC PA PA PB PC0 AINTR AINTR PC ABF ABF PC2 ASTB ASTB PC3 BINTR PC4 BBF PC5 BSTB / 855 /,,, / ) 8, I/O 7.22 C : D3D2=00(ALT):A B I/O,C D3D2=(ALT2):A B I/O,C D3D2=0(ALT3):A I/O,B I/O,C 3,3 D3D2=0(ALT4):A B I/O,C 3 A,3 B (TM2,TM) :

134 28 TM2TM=, :, ;, 2) / / 4, 8, : TL(04H) T7 T6 T5 T4 T3 T2 T T0 TH(05H) M2 M T3 T2 T T0 T9 T8 T3~T0, 0002H~3FFFHM2M

135 MCS RAM :000H~00FFH 5, RAM : :0200H A :020H B:0202H C :0203H :0204H :0205H MCS ,A C,B, I/O, :PA=0,PB=,PC2PC=00,IEA=0,IEB=0,TM2TM= 00000B=C2H : MOV OPTR,#0204H MOV A,#8H ; 8 ; 8 ; 8 INC DPTR ; MOV A,#40H MOV DPTR,#0200H MOV A,#C2H ; 6 2 ; ; ;855 ; ,855 A, : 0, 855RAM (, 256), B, PC0 ; 0, PC0 0, : MOV DPTR,#0200H MOV A,#06H ; ;

136 30 ; MOV R0,#00H MOV R,#00H ; 855 RAM ; 256 LP: MOV DPTR,#020H ; A MOVX A,@DPTR JZ LP3 INC R0 INC DPTR INC DPTR MOVX A,@DPTR SETB ACC,0 DJNZ R,LP ;A ;0 ; RAM ; ; B ;B ; C ;C ;PC0= ; LP2: SJMP $ ; ; LP3: MOV DPTR,#0203H ; C SJMP LP2 ; 7.4,, /, 7.4., CPU, : ; 2 ; 3. :, ),,

137 7 3, 0,,,,, 2),, 0,, 0, , A, ;C, , KS (A)=0DIR, 6ms,, A, : = 4+ ;,A FFH KEY:LCALL KS JNZ LK LJMP LK8 LK: LCALL DIR LCALL DIR LCALL LS JNZ LK2 ; ;(A)=0, ; ; 2ms ; ; ;

138 32 LJMP LK8 ; LK2: MOV R3,#00H MOV R2,#FEH LK3: MOV DPTR,#00H MOV A,R2 INC DPTR INC DPTR MOVX A,@DPTR ANL A,#0FH MOV R4,A CJNZ A,#0FH,LK4 MOV A,R2 JNB ACC.7,LK8 RL A MOV R2,A INC R3 SJMP LK3 LK4: MOV A,R3 ADD A,R3 MOV R5,A ADD A,R5 MOV R5,A MOV A,R4 LK5: RRC A JNC LK6 INC R5 SJMP LK5 LK6: MOV 20H,R5 LK7: LCALL DIR LCALL KS JNZ LK7 LCALL DIR LCALL DIR MOV A,20H KND: RET LK8: MOV A,#FFH ; R3 ; R2 ; 855 A ; A ; ; 855 C ; ; 4 ; ; ; A ; ;, ; R2 ; ; ; A ; 2 ; 4 ; R5 ; A ; ; 0 ; ; ; ; ; ; ; ; 2ms, ; A ; FFH A RET KS: MOV DPTR,#00H ;

139 7 33 MOV A,#00H ; INC DPTR INC DPTR MOVX A,@DPTR ANL A,#0FH ORL A,#F0H CPL A RET LED.LED ; ; 855C ; ; 4 ;4 ;, 0 LED 7, dp 7,, LED +5V, LED LED,,, 8,,,, LED ( ), 8 7,, 8, LED :

140 34 D7 D6 D5 D4 D3 D2 D D0 dp g f e d c b a LED P, P 0 C0H 3FH 9 90H 6FH F9H 06H A 88H 77H 2 A4H 5BH B 83H 7CH 3 B0H 4FH C C6H 39H 4 99H 66H D AH 5EH 5 92H 6DH E 86H 79H 6 82H 7DH F 84H 7H 7 F8H 07H FFH 00H 8 80H 7FH P 8CH 73H 2.LED A, 7545N,B, RAM 6 79H~7EH, A,855 B,

141 7 35,, A B, : 7.29 DIR: MOV R0,#79H ; R0 MOV R3,#0H ; LD0: MOV A,R3 MOV DPTR,#00H ; PA DPTR,A INC DPTR MOV A,@R0 ADD A,#2H MOVX A,@A+PC ; PB ; ; ; DPTR,A ; ACALL DL ; INC R0 ; MOV A,R3 ; JB ACC.5,LD ; 6

142 36 RL A ;,R3, MOV R3,A AJMP LD0 LD: RET DSEG: DB 3FH,06H,5BH,4FH,66H,6DH ; DSEG: DB 7DH,07H,7FH,6FH,77H,7CH DSEG2: DB 39H,5EH,79H,7H,73H,3EH DSEG3: DB 3H,6H,CH,23H,40H,03H DSEG4: DB 8H,00H,00H,00H DL: MOV R7,#02H ; DL: DL6: MOV R6,#0FFH DJNZ R6,DL6 DJNZ R7,DL RET /, CPU LED 8279MCS 5, , +5V : ()I/O ; (2) ; (3) ; (4) ; (5)FIFO( ) ; (6) RAM DB0~DB7: A0: A0=, DB0~DB7 ; A0=0 RD WR: IRQ: SL 0~SL 3 : (4

143 7 37 ), (6 ), 4/6 3/8, 8 RL0~RL7:, OUTA0~OUTA3 OUTB0~OUTB3:, ,803 88, P08279 N 64 SL0~SL2 3 8 (74LS38) RL0~RL7 8279,8 8279, (SHIFT) (CNTL) 8279 FIFO RAM FIFO RAM 8,8279 FIFO FIFO A0~A3 B0~B3 ( ), LED 7 LED,A3,B0 SL0~SL3, LED 6, 6 : STRT: MOV OPTR,#7FFFH MOV A,#0DH MOVX DPTR,A WAITD: MOVX A,@DPTR JB ACC.7,WAITD ;7FFFH 8279 ; ; ; ; MOV A,#2AH ;,ALE MHz, ;0 00kHz ;

144 38 MOV A,#08H ;, MOV R0,#30H MOV R7,#0H MOV A,#90H MOV DPTR,#7EFFH ; ;30H~3FH ; 6 ; ;7EFFH 8279 LOOP: MOV A,@R0 ; 8279 RAM INC R0 ; DJN2 R7,LOOP MOV R0,#40H MOV R7,#0H LOOP2: MOV DPTR,#7FFFH LOOP3: MOVX A,@DPTR ANL A,#0FH JZ LOOP3 MOV A,#40H ;6 ;40H ;6 ;8279 ; 4 ;FIFO ; FIFO RAM ; MOV DPTR,7EFFH MOVX A,@DPTR ; ; ; 40H~4FH INC R0 ; DJNZ R7,LOOP2 ; 0H HERE: AJMP HERE ; 7.5 A/D D/A,, A/D D/A A/D D/A,, 7.5. AD. A/D 4 : A/D

145 7 39 A/D,, : ()ADC080~ADC08058 MOSA/D ; (2)ADC0808/ MOSA/D ; (3)ADC086/087 8 MOSA/D A/D : na/d Δ= 2 n - : ; ε= 2 =Δ 2 ε= 2 n+ 2. A/D ADC0809 ADC A/D 8,,, ±LSB ADC0809,CLK,f clk 500kHz~ MHz, 640kHz 66~73, 00~0μs ADC , ADC0809

146 40 : 7.33 ADC0809 IN0~IN7:8 2 - ~2-8 :8 STAR,ALE:STAR,ALE, / EOC,OE:EOC,OE A/D OE, REF(+),REF(-),VCC,GND:REF(+)REF(-),VCC,GND CLK: ADD A B C:8 3, C B A C B A IN0 0 0 IN4 0 0 IN 0 IN5 0 0 IN2 0 IN6 0 IN3 IN7 ADC , t WS :, 00ns, 200ns t WE : ALE, 00ns, 200ns t D :, μs, 2.5μs t C :,f clk =640kHz, 00μs, 6μs t EOC :, 8 2μs

147 7 4 3.ADC ADC0809 ADC : ) ADC ADC0809

148 42,P2.7=A5=0,A0AA2 ;, A/D ;, A/D, 8, MOV R,#data MOV DPTR,#7FF8H MOV R7,#08H ; ;P2.7=0, 0 ; LP: ; A/D DALY: MOV R6,#0AH NOP NOP NOP NOP NOP DJNZ R6,DALY MOVX A,@DPTR ; ; ; INC DPTR INC R 2) DJNZ R7,LP ADC ; ; ; ADC0809

149 7 43 ADC0809 I/O, 803 P2.0 WR 0FEFFH, ADD A ADDB ADDC 803 P0.0 P0. P0.2,CLK 803 ALE 0 : ORG 000H INADC: SETB IT SETB EA SETB EX MOV DPTR,#0FEFFH MOV A,#00H ;INT ; INT ; DPTR ; 0 ; PINT: ORG 003H AJMP PINT MOV DPTR,#0FEFFH MOVX A,@DPTR MOV 50H,A ; DPTR ; IN0 ; 50H MOV A,#00H ; A/D,IN0 RETI ; DA.D/A D/A, D/A, () D/A, n,d/a 2 -n (2) D/A, ±/2LSB( ) (3) D/A :, D/A,, 2. D/A DAC0832 DAC D/A,,+5~+5V ±0 V, μs,cmos, 20 mw DAC

150 DAC0832 DAC, ( ), ( ), ( ) 3, :LE=0, ;LE=,, DAC0832, IOUT+IOUT2=, 7.38,DAC0832, 5kΩ DAC , DAC0832 : DI7~DI0: CS:,, ILE:,, WR WR2: 2,,

151 7 45 XFER:,, IOUT:,DAC, ; 0, 0 I OUT : 2, I OUT+I OUT2= R fb :, 5kΩ VREF:,, -0~+0V DGND: AGND: 3.DAC0832MCS 5 DAC : ) 7.40 ILE+5V,CSXFER P2.7 DAC0832, WR,DAC0832 D/A 7.40 DAC0832 D/A : MOV DPTR,#7FFFH MOV A,#DATA ; DAC0832 ; A ; D/A 2) D/A, D/A, DAC0832 D/A,CPU D/A, CPU D/A, DAC, 7.4 D/A, D/A

152 46 MOV DPTR,#0DFFFH MOV A,#data DPTR,A ; MOV DPTR,#0BFFFH MOV A,#data2 MOV DPTR,#7FFFH 7.4 DAC0832 ; DAC0832() ;data DAC0832() ; DAC0832(2) ;data2 DAC0832(2) ;DAC0832()(2) WR ; D/A D/A, D/A, 7.42, ms,0ms DAC0832 ( 7.42) 7.42

153 7 47 : START: MOV A,#00H ; MOV DPTR,#7FFFH ;0832 DPTR MOV R,#0AH ; 0 LP: ; 0832 ACALL DELAY ;ms DJNZ R,NEXT SJMP START ; 0 ; NEXT: ADD A,#0 ; SJMP LP ; DELAY: MOV 20H,#249 ;ms AGAIN: NOP NOP DJNZ 20H,AGAIN RET. MCS (8K8 ),, 8000H~ BFFFH,, A A 0,B,C PC 7,PC, 8255A A CS P2.0, 8255A 803, 6.855A RAM I/O CE P2.0,IO/ 珨 M P2., RAM I/O I/O ALT,A B, 24, A 85,A,B, 0. T0 20ms ADC0809 IN0 A/D,. DAC0832, 803, D/A

154 8 8. :,,, 8.,,,, : (), (2), (3),, (4),,,, (5), :,,, A/D D/A, ; : (),,,,, (2) 48

155 (3),,,, 5, 803,, PLD, (4), (5),

156 50,, (6),PROTEL, : (),,, (2),, (3) CPU,,, (4),,C5PL/M96,,, (5),, (6),, WATCHDOG,,,,,, : () (2) RAM (3) ( ) (4), (5)EPROM,,,,,,, DEBUG,, EPROM, ROM EPROM,

157 ,,, 8.2 WAVE, CPU RAM I/O, ( ),, ( ), WAVE KeilC MedWin, WAVE WAVE( ) CPU, MCS 5 MCS 96 MicrochipPIC CPU CPU,,, RAM,, :. [ / ], NONAME, 2. [ / ][ / ],,,C:\ VW\SAMPLES, MY.ASM, : C:\WAVE2000\SAMPLES\MY.ASM 3. [ / ], () MY.ASM, (2),, (3) MY,.PRJ,, MY.ASM,, [ / ] 4. [ / ],,,,, 5 8

158 52 5. [ / ] F9,,,, 6. [ / ] F7,,,, :,, [ / ] Ctrl+F8,,[ ],, 7. USB,,,, 4,,,, [ ],,,, 8.3 MCS 5,,,, :.,,,,, V CC GND, 5V,,,

159 8 53,CPU,, CPU,, , MBUG :, A/D D/A,,.,,,: ORG 8000H STRT: CLR C MOV A,#0F0H LP: INC A JNC LP MOV DPTR,#7FFFH, INC A, JNCLP LP, JNCLP :CJNE A,#00H,LP 2.,,, 3H 30H 33H 32H BCD, 34H 33H 32H STRT: MOV R0,#32H MOV R,#30H MOV R6,#02H

160 54 CLR C LOOP: MOV A,@R0 ADDC A,@R DA A INC R0 INC R DJNZ R0,LOOP CLR A MOV ACC.0,C R0,A LOOP2: RET, H ~33H, LOOP2,STRT, 34H~32H, STRT, 803, 3.,,,, ; 4.,EPROM CPU,, 803,PC 0000H, ,

161 :,,,,,, 9.,,,, ;,. ), 2), ( ) (, ), 9.

162 56 2 ( ) ( ) 3 ( ) 4 ( ) 5 ( ) 6 ( ) 7 ( ) 8 ( ) 9 ( ) 瑏 瑠 ( ) 瑏 瑡 ( ) 瑏 瑢 ( ) 瑏 瑣 ( ) 瑏 瑤 ( ) ),,,, /, 2) ( )

163 9 57 3) :, 3. ),, 9.2(a),,, 9.2 (a) ;(b) 2), 9.2(b), 50Hz, (a) ;(b) ;(c) ;(d)