TSINGTEK DISPLAY CO.,LTD LCD CONTROLLER & DRIVER ST7920 OR EQUIVALENT 588 4 1 0571-85121224 85121742 85121304(f) 639 2A095 0571-88256346 89902095 f B1618 010-62051209 62000662 62568913 82036512 f http://www.tsingtek.com E-mail: sales@tsingtek.com
ST7920 3 6 7 9 10 24 31 41 42 42 43 www.tsingtek.com E-mail:sales@tsingtek.com 2 42
ST7920 0.1 CMOS 1. 2. 3. 4. 5. RH60% 6. www.tsingtek.com E-mail:sales@tsingtek.com 3 42
ST7920 1. 2. 3. PCB 4. 5. 6. 7. PCB PCB 1. 280 C 2. 3 4s 3. 4. 5. 3 5 1. 2. IC 3. DC-DC 4. 5. 10 0.5 www.tsingtek.com E-mail:sales@tsingtek.com 4 42
ST7920 6. 7. 8. 9. 1. 2. -10 C +35 C 3. 4. 5. / 1. 2. 3. LCD www.tsingtek.com E-mail:sales@tsingtek.com 5 42
ST7920 1. HG 12864 12 - - - - - - HC HG SMT/COB HGT TAB HGO COG HGR COLOR STN; HGQ TFT; HGS OLED * STN G STN B STN F FSTN T FSTN LY LED SY LED LW LED SW LED LB LED LR LED LA LED LG LED EB EL EG EL EW EL CW CCFL H EH 5V NV 5V SV 5V LV 3/3.3V LNV 3/3.3V LSV 3/3.3V OV 5V,VO PCB LOV 5V,VO PCB TP S D * 2. ST7920 Model Model Size View Area Dot size www.tsingtek.com E-mail:sales@tsingtek.com 6 42
ST7920 NO. W*H(mm) W*H(mm) W*H(mm) STN STN STN LED EL GRAY YELLOW BLUE HG122329 84.0*44.0 60.0*18.0 0.40*0.45 HG128322 110*65.0 76.0*25.0 0.52*0.52 HG1286412 93.0*70.0 72.0*40.0 0.48*0.48 HG1286412B 93.0*70.0 72.0*40.0 0.48*0.48 HG1286415 113.2*65.2 73.4*38.8 0.50*0.50 HG160322 122.0*44.0 99.0*24.0 0.55*0.56 HG19232B 116.0*37.0 85.0*18.6 0.38*0.38 ST7920 Sitronix www.tsingtek.com (12864 ) V SS GND V CC VDD V 0 VLCD RS 1 0 R/W 1 0 E DB0~DB7 PSB / SCLK 1 0 www.tsingtek.com E-mail:sales@tsingtek.com 7 42
ST7920 SID CS A LED + K LED - 1., (1) (V) Vdd -Vss 0 5.5 (V) V0- Vss 0 7 (V) VI Vss Vdd ( ) 20 70 ( ) 30 80 (2) MIN TYP MAX VIH 0.7Vdd - - V VIL - - 0.8 V VOH IOH = 0.2 ma 0.8Vdd - - V VOL IOL = 1.2 ma - - 0.4 V IDD - 3 5 ma www.tsingtek.com E-mail:sales@tsingtek.com 8 42
ST7920 1. 2., A. -OV ( -OV ), V0 B. Vee 10K V0 Vee 10K V0 GND 3. V0 VDD 50 ms V0 VDD 50 ms 4. LED 3.5-4.1V 5V www.tsingtek.com E-mail:sales@tsingtek.com 9 42
ST7920 ST7920 1. 8-4- MPU 2. 64 x 16- RAM (DDRAM 16 x 4, LCD 16 X 2 ) 3. 64 x 256- RAM GDRAM 4. 2M- ROM (CGROM) 8192 (16x16 ) 5. 16K- ROM (HCGROM) 126 (16x8 ) 6. 64 x 16- RAM (CGRAM) 7. 15 x 16-240 ICON RAM IRAM 8. RESET 9. 10. 11. - Display clear - Return home - / Display on/off - / Cursor on/off - Display character blink - Cursor shift - Display shift - Vertical line scroll - By_line reverse display - Sleep mode 12. Booster (2 ) ST7920 XRESET 11 ( ) PSB 23 : 0: 1: 8/4- RS(CS*) 17 ( ):0: Busy/ 1: ( ): 1: 0: RW(SID*) 18 ( ):1: 0: ( ): www.tsingtek.com E-mail:sales@tsingtek.com 10 42
ST7920 E(SCLK*) 19 D4 to D7 D0 to D3 28 31 24 27 / / 4- DB7 busy 4 4-4- 4 LCD COM1 COM33 40 72 SEG1 SEG64 136 73 VDD 10,14 2.7V 5.5V VSS 9,20 0V V0 V4 1 3,7,8 - LCD PSB ST7920 DL FLAG 8-4- ( RS, RW, E, DB0..DB7 ) (CGRAM,DDRAM,IRAM..) DUMMY READ DUMMY READ DUMMY READ 4-4 DB7~DB4 DB7~DB4 4 DB3~DB0 DB7~DB4 4- DB3~DB0 PSB ST7920 SCLK SID ST7920 CS CS SCLK CS ST7920 www.tsingtek.com E-mail:sales@tsingtek.com 11 42
ST7920 ST7920 SCLK SID CS ST7920 SCLK ST7920 / 1 RW RS 0 RW RS 4 DB7~DB4 LSB 4 DB3~DB0 LSB 0 www.tsingtek.com E-mail:sales@tsingtek.com 12 42
ST7920 ST7920 8-,4- PSB PSB 1 8/4-0 ST7920 8- DR IR DR DDRAM/CGRAM/GDRAM IRAM RAM DR RAM RS RW 4 RS RW L L MPU IR L H BF AC H L MPU DR H H MPU DR BF BF 1 BF BF 0 ST7920 www.tsingtek.com E-mail:sales@tsingtek.com 13 42
ST7920 ST7920 BF AC AC DDRAM/CGRAM/IRAM/GDRAM IR DDRAM/CGRAM/IRAM/GDRAM AC RS 0 RW 1 AC DB6 DB0 ROM (CGROM) ROM HCGROM ST7920 ROM 8192 16 x 16 126 16 x 8 DDRAM DDRAM CGROM RAM (CGRAM) ST7920 RAM 16x16 CGRAM CGRAM DDRAM ICON RAM IRAM ST7920 240 ICON 15 IRAM IRAM 16 IRAM IRAM D15 D8 D7 D0 RAM DDRAM RAM 64x2 4 16 64 RAM CGROM HCGROM CGRAM ST7920 HCGROM CGRAM CGROM DDRAM 0000H 0006H CGRAM 02H 7FH A1 BIG5 A140 D75F GB(A1A0 F7FF) 1. 8 DDRAM 02H 7FH 2. CGRAM 16 DDRAM 0000H 0002H 0004H 0006H 3. 16 DDRAM www.tsingtek.com E-mail:sales@tsingtek.com 14 42
ST7920 A140H D75FH (BIG5), A1A0H F7FFH (GB) 16 DDRAM D15 D8 D7 D0 5 CGRAM DDRAM CGRAM Address conuter ( 4) 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L T s i n g t e k L C M 4 RAM GDRAM RAM 64x32 ( RAM ) 256x64 RAM GDRAM ( ) 8 RAM AC, RAM 1. Y RAM 2. X RAM 3. D15 D8 RAM ( Bytes) 4. D7 D0 RAM ( Bytes) 8 www.tsingtek.com E-mail:sales@tsingtek.com 15 42
ST7920 5 DDRAM CGRAM CGRAM www.tsingtek.com E-mail:sales@tsingtek.com 16 42
ST7920 1. DDRAM ( ) 1 2 CGRAM 4 5 (2 :4 ). 2. CGRAM 0 3 16 4 16 16 (OR). 3. CGRAM 0 15 ( 15 ). 4. CGRAM DDRAM 4 15 0 0 3 6 ICON RAM Segment www.tsingtek.com E-mail:sales@tsingtek.com 17 42
ST7920 7 16x8 www.tsingtek.com E-mail:sales@tsingtek.com 18 42
ST7920 8 GDRAM www.tsingtek.com E-mail:sales@tsingtek.com 19 42
ST7920 ST7920 8 8 ( TA = 25 C, VDD = 4.5V ) Tc 1200 ns TPW 140 ns E / TR,TF 25 ns TAS 10 ns TAH 20 ns TDSW 40 ns TH 20 ns RS,RW,E DB0-DB7 ( TA = 25 C, VDD = 2.7V ) Tc 1800 ns TPW 160 ns E / TR,TF 25 ns TAS 10 ns RS,RW,E www.tsingtek.com E-mail:sales@tsingtek.com 20 42
ST7920 TAH 20 ns TDSW 40 ns TH 20 ns DB0-DB7 8 ( TA = 25 C, VDD = 4.5V ) Tc 1200 ns TPW 140 ns E / TR,TF 25 ns TAS 10 ns TAH 20 ns TDDR 100 ns TH 20 ns RS,RW,E DB0-DB7 ( TA = 25 C, VDD = 2.7V ) Tc 1800 1800 E www.tsingtek.com E-mail:sales@tsingtek.com 21 42
ST7920 TPW 320 320 / TR,TF 25 TAS 10 10 TAH 20 20 TDDR 260 TH 20 20 RS,RW,E DB0-DB7 ( TA = 25 C, VDD = 4.5V ) / TR,TF - - 0.2 µs - TSCYC 400 - - ns SCLK TSHW 200 - - ns E SCLK TSLW 200 - - ns SID TSDS 40 - - ns SID TSDH 40 - - ns CS TCSS 60 - - ns CS TCSH 60 - - ns RW RS www.tsingtek.com E-mail:sales@tsingtek.com 22 42
ST7920 ( TA = 25 C, VDD =2.7V ) / TR,TF - - 0.2 µs - TSCYC 600 - - ns SCLK TSHW 300 - - ns E SCLK TSLW 300 - - ns SID TSDS 40 - - ns SID TSDH 40 - - ns CS TCSS 60 - - ns CS TCSH 60 - - ns RW RS www.tsingtek.com E-mail:sales@tsingtek.com 23 42
ST7920 1. 1 RE=0 www.tsingtek.com E-mail:sales@tsingtek.com 24 42
ST7920 2 RE=1 2. : RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 0 0 1 DDRAM "20H"(space code) DDRAM AC "00H", I/D "1" AC 1. RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 www.tsingtek.com E-mail:sales@tsingtek.com 25 42
ST7920 0 0 0 0 0 0 0 0 1 x DDRAM AC "00H" DDRAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 1 I/D S I/D : I/D = "1",,DDRAM AC 1 I/D = "0",,DDRAM AC 1 S: S I/D H H H L RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 1 D C B,, ON/OFF D : ON/OFF D = "1", ON D = "0", OFF, DDRAM C : ON/OFF C = "1", ON. C = "0", OFF. B : ON/OFF B = "1", ON,. B = "0", OFF RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 1 S/C R/L x x DDRAM www.tsingtek.com E-mail:sales@tsingtek.com 26 42
ST7920 S/C R/L AC L L AC=AC-1 L H AC=AC+1 H L (display) AC=AC, H H (display) AC=AC, RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 1 DL x RE x x DL : 4/8 BIT DL = "1", 8 BIT MPU DL = "0", 4 BIT MPU RE : RE = "1", RE = "0", RE DL DL RE FLAG CGRAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 1 AC5 AC4 AC3 AC3 AC1 AC0 CGRAM AC AC 00H..3FH SR=0 ( RAM ) DDRAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 1 AC6 AC5 AC4 AC3 AC3 AC1 AC0 DDRAM AC AC 80H..8FH AC 90H..9FH www.tsingtek.com E-mail:sales@tsingtek.com 27 42
ST7920 AC A0H..AFH AC B0H..BFH BF RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 1 BF AC6 AC5 AC4 AC3 AC3 AC1 AC0 BF, AC BF = 1,, BF = 0. RAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 1 0 RAM (AC) RAM (CGRAM,DDRAM,IRAM..) (2-Bytes) BYTE AC RAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 1 1 RAM, (AC) (CGRAM,DDRAM,IRAM..) DUMMY READ, DUMMY READ DUMMY READ : RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 0 0 1 RAM RAM www.tsingtek.com E-mail:sales@tsingtek.com 28 42
ST7920 RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 0 1 SR SR = "1", SR = "0", IRAM ( ) CGRAM ( ) RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 0 1 R1 R0 4 R1,R0 00, R1 R0 L L L H H L H H RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 0 0 1 SL 0 0 SL=1: SL=0: RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 0 1 DL x RE G x DL : 4/8 BIT DL = "1", 8 BIT MPU DL = "0", 4 BIT MPU RE : RE = "1", RE = "0", G : www.tsingtek.com E-mail:sales@tsingtek.com 29 42
ST7920 G = "1", ON G = "0", OFF RE DL G DL G RE FLAG IRAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 1 AC5 AC4 AC3 AC3 AC1 AC0 SR=1: AC5~AC0 SR=0: AC3~AC0 ICON RAM RAM RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 1 AC6 AC5 AC4 AC3 AC3 AC1 AC0 GDRAM AC ( ) AC6...AC0 AC3 AC0 RAM AC (X ), =0FH 00H ST7920 : 1 2.. 8 9 10..16 122*32 128*32 128*64 1 2 1 2 1 2 3 4 80H 81H..87H 90H 91H 97H 80H 81H..87H 90H 91H 97H 80H 81H..87H 90H 91H 97H 88H 89H 8FH 98H 99H 9FH www.tsingtek.com E-mail:sales@tsingtek.com 30 42
ST7920 160*32 1 2 80H 81H..89H 90H 91H 99H 192*32 1 2 80H 81H..8BH 90H 91H 9BH 8052 12M 8031 C51 DEMO WINDOWS 8 4 ( ) www.tsingtek.com E-mail:sales@tsingtek.com 31 42
ST7920 RS EQU P3.0 RW EQU P3.1 E EQU P3.2 1. BF AC READ_BF: MOV P1,#0FFH CLR RS SETB RW SETB E MOV A,P1 NOP NOP CLR E RET 2. WRITE_COM: ;WRIT///cv LCALL DELAY1 ;INSTEAD OF CHECKING BF STATE CLR RS CLR RW MOV P1,A SETB E NOP NOP CLR E RET 3. WRITE_DAT: ;WRITE DISPLAY DATAS TO ST79220 LCALL DELAY1; INSTEAD OF CHECKING BF STATE SETB RS CLR RW MOV P1,A SETB E NOP NOP CLR E RET www.tsingtek.com E-mail:sales@tsingtek.com 32 42
ST7920 4. READ_DAT: MOV P1,#0FFH LCALL DELAY1; ; INSTEAD OF CHECKING BF STATE SETB RS SETB RW SETB E MOV A,P1 NOP NOP CLR E RET 5. A: BF BF: LCALL READ_BF JB ACC.7,BF RET B: DELAY1: MOV R7,#010H D11: MOV R6,#010H DJNZ R6,$ DJNZ R7,D11 RET ( ) www.tsingtek.com E-mail:sales@tsingtek.com 33 42
ST7920 CS EQU P3.0 ; SID EQU P3.1 ; CLK EQU P3.2 ; 1 WRITE_COM: LCALL DELAY1 ;INSTEAD OF CHECKING BF STATE SETB CS PUSH ACC MOV R0,#8 MOV A,#11111000B COMM1: CLR C RLC A CLR CLK MOV SID,C SETB CLK DJNZ R0,COMM1 www.tsingtek.com E-mail:sales@tsingtek.com 34 42
ST7920 POP ACC MOV R5,A ANL A,#0F0H MOV R0,#8 COMM2: CLR C RLC A CLR CLK MOV SID,C SETB CLK DJNZ R0,COMM2 MOV A,R5 SWAP A ANL A,#0F0H MOV R0,#8 COMM3: CLR C RLC A ; CLR CLK CLR CLK MOV SID,C SETB CLK DJNZ R0,COMM3 CLR CS RET 2 WRITE_DAT: LCALL DELAY1 SETB CS PUSH ACC MOV R0,#8 MOV A,#11111010B DATA1: CLR C RLC A CLR CLK MOV SID,C SETB CLK DJNZ R0,DATA1 POP ACC MOV R5,A www.tsingtek.com E-mail:sales@tsingtek.com 35 42
ST7920 ANL A,#0F0H MOV R0,#8 DATA2: CLR C RLC A CLR CLK MOV SID,C SETB CLK DJNZ R0,DATA2 MOV A,R5 SWAP A ANL A,#0F0H MOV R0,#8 DATA3: CLR C RLC A CLR CLK MOV SID,C SETB CLK DJNZ R0,DATA3 CLR CS RET 122*32 (8 ) ST7920 SETUP: LCALL DELAY LCALL DELAY LCALL DELAY MOV A,#01H ;CLEAR DISPLAY LCALL WRITE_COM MOV A,#00110000B ;FUNCTION SETTING LCALL WRITE_COM MOV A,#00000010B ;DDRAM SET TO '00H' LCALL WRITE_COM MOV A,#00000100B ; www.tsingtek.com E-mail:sales@tsingtek.com 36 42
ST7920 LCALL WRITE_COM MOV A,#00001100B ;DISPLAY ON LCALL WRITE_COM MOV A,#00000001B ;CLEARING SCREEN LCALL WRITE_COM MOV A,#10000000B ;SET DDRAM ADDRESS LCALL WRITE_COM RET DELAY: MOV R1,#00H D2: MOV R2,#00H DJNZ R2,$ DJNZ R1,D2 RET MAIN: MOV P3,#0FFH LCALL SETUP ; MOV A,#34H LCALL WRITE_COM MOV A,#80H LCALL WRITE_COM MOV A,#80H LCALL WRITE_COM MOV DPTR,#BMP MOV R3,#64 ; MOV R4,#32 MOV R2,#80H WBMP: CLR A MOVC A,@A+DPTR LCALL WRITE_DAT INC DPTR DJNZ R4,WBMP MOV R4,#16 www.tsingtek.com E-mail:sales@tsingtek.com 37 42
ST7920 MOV A,R2 INC A MOV R2,A LCALL WRITE_COM MOV A,#80H LCALL WRITE_COM DJNZ R3,WBMP MOV A,#36H ; LCALL WRITE_COM LCALL DELAY LCALL DELAY LCALL DELAY LCALL DELAY LCALL DELAY MOV A,#34H ; LCALL WRITE_COM MOV A,#30H ; LCALL WRITE_COM RET WRITE_HZ: ;WRITE 8 CHINESE TO LCD MOV R4,#8 DD: CLR A MOVC A,@A+DPTR INC DPTR LCALL WRITE_DAT CLR A MOVC A,@A+DPTR INC DPTR LCALL WRITE_DAT DJNZ R4,DD RET ST7920 16x16. 4 16*16, DEF_CHAR: ;WRITE TO CGRAM www.tsingtek.com E-mail:sales@tsingtek.com 38 42
ST7920 DEF1: MOV A,#01000000B ;SET CGRAM ADDRESS LCALL WRITE_COM MOV R3,#8 MOV A,#000H LCALL WRITE_DAT MOV A,#000H LCALL WRITE_DAT MOV A,#0FFH LCALL WRITE_DAT MOV A,#0FFH LCALL WRITE_DAT DJNZ R3,DEF1 DEF2: MOV R3,#8 MOV A,#0AAH LCALL WRITE_DAT MOV A,#0AAH LCALL WRITE_DAT MOV A,#0AAH LCALL WRITE_DAT MOV A,#0AAH LCALL WRITE_DAT DJNZ R3,DEF2 DEF3: MOV R3,#8 MOV A,#055H LCALL WRITE_DAT MOV A,#055H LCALL WRITE_DAT MOV A,#0AAH LCALL WRITE_DAT MOV A,#0AAH LCALL WRITE_DAT DJNZ R3,DEF3 www.tsingtek.com E-mail:sales@tsingtek.com 39 42
ST7920 MOV R3,#8 DEF4: MOV A,#0FFH LCALL WRITE_DAT MOV A,#0FFH LCALL WRITE_DAT MOV A,#0FFH LCALL WRITE_DAT MOV A,#0FFH LCALL WRITE_DAT DJNZ R3,DEF4 RET : LCALL DEF_CHAR MOV A,#80H LCALL WRITE_COM MOV R3,#8 TEST11: MOV DPTR,#CGRAM1 ;CGRAM TEST LCALL WRITE_CGRAM DJNZ R3,TEST11 MOV A,#90H LCALL WRITE_COM RET WRITE_CGRAM: ;CGRAM TESTING CLR A MOVC A,@A+DPTR LCALL WRITE_DAT INC DPTR CLR A MOVC A,@A+DPTR LCALL WRITE_DAT RET CGRAM1: DB 000H,000H ; www.tsingtek.com E-mail:sales@tsingtek.com 40 42
ST7920 1 VDD V0/VEE VSS 0.1 f 104 10 f 20 f 2 3 E 4 E R/W RS 0.001 f 102 5 www.tsingtek.com E-mail:sales@tsingtek.com 41 42
ST7920 1. 2. / DC-DC 3. EL CCFL LCM LCM LCM 1. LCM LCM 2. LCM 3. LCM LCM 4. LCM 5. LCM LCM / / / / IC IC www.tsingtek.com E-mail:sales@tsingtek.com 42 42