MCP3421 DS51683A_CN
Microchip Microchip Microchip Microchip Microchip Microchip Microchip Microchip Microchip Microchip Microchip Digital Millennium Copyright Act Microchip Microchip Technology Inc. Microchip Technology Inc. Microchip Microchip Microchip Microchip Microchip Microchip Microchip dspic KEELOQ KEELOQ MPLAB PIC PICmicro PICSTART PIC 32 rfpic UNI/O Microchip Technology Inc FilterLab Hampshire HI-TECH C Linear Active ThermistorMXDEVMXLABSEEVAL The Embedded Control Solutions Company Microchip Technology Inc Analog-for-the-Digital Age Application Maestro chipkit chipkit CodeGuard dspicdem dspicdem.net dspicworks dsspeak ECAN ECONOMONITOR FanSense HI-TIDE In-Circuit Serial Programming ICSP Mindi MiWi MPASM MPLAB Certified MPLIBMPLINKmTouchOmniscient Code Generation PICC PICC-18 PICDEM PICDEM.net PICkit PICtail REAL ICE rflab Select Mode Total Endurance TSHARC UniWinDriver WiperLock ZENA Microchip Technology Inc SQTP Microchip Technology Inc 2011, Microchip Technology Inc ISBN978-1-61341-388-3 Microchip Chandler Tempe Gresham ISO/TS-16949:2009 Microchip PIC MCU dspic DSCKEELOQ EEPROM Microchip ISO 9001:2000 DS51683A_CN ii
MCP3421... 1 1 1.1... 5 1.2... 6 2 2.1... 9 2.2... 11 A A.1... 15 A.2... 16 A.3... 17 A.4... 17 B BOM... 22 DS51683A_CN iii
MCP3421 DS51683A_CN iv
MCP3421 Microchip / www.microchip.com DS DS DSXXXXXA XXXXXA MPLAB IDE Help Topics MCP3421 Microchip MCP3421 1 MCP3421 2 MCP3421 A MCP3421 B BOM MCP3421 DS51683A_CN 1
MCP3421 Arial MPLAB IDE User's Guide Output Settings Enable Programmer Save project before build File>Save OK Power 0xnnnn n 0xFFFF 0x007A < > <Enter> <F1> Courier New Courier New #define START autoexec.bat c:\mcc18\h _asm _endasm static -Opa+-Opa- 0 1 0xFF A bnnnn n b00100 b10 Courier New file.o file [ ] mcc18 [] file [] { } errorlevel {0 1}... var_name [, var_name...] void main (void) {... } DS51683A_CN 2
MCP3421 Microchip MPLAB IDE, Simulator, Editor User's Guide DS51025 MPLAB Integrated Development Environment IDE MCP3421 I 2 C 18 DS22003E_CN 18 ADC MCP3421 MCP3421 MCP73831/2 / DS21984A_CN / PIC18F2455/2550/4455/4550 DS39632D_CN MCP3421 Microchip Technology, Inc. MICROCHIP Microchip www.microchip.com FAQ Microchip Microchip Microchip Microchip Microchip FAE FAE http://support.microchip.com DS51683A_CN 3
MCP3421 A 2007 10 DS51683A_CN 4
1 MCP3421 1.1 MCP3421 MCP3421 MCP3421 MCP3421 MCP73831 / PIC18F4550 MCU MCP3421 18 ΔΣ - Analog-to-Digital Converter ADC SOT-23 V REF = 2.048V x1 x2 x4 x8 I 2 C MCP3421 ADC (a) (b) LCD MCP3421 2x16 LCD LCD (a) (b) MCP3421 50% PIC18F4550 MCP3421 USB PC graphic user interface GUI GUI 1-1 MCP3421 18 ADC MCP3422 MCP3421 MCP3422 MCP3422 MCP3421 MCP3422 MCP3421 Microchip Technology Inc. DS51683A_CN 5
MCP3421 1.2 MCP3421 LCD LCD LCD 50% MCP3421 ADC LCD MCP3421 9V 1.5V AAA 1.5V TP9 GND U1 U5 U1 U5 DS51683A_CN 6
MPLAB ICD2 2x16 LCD USB 9V TP11 1 1.5V 9V 1 + PIC18F4550 MCP3422 MCP73831 MCP3421 I 2 C 1.5V AAA 1.5V AAA + + MCP3421 MCU MCLR 1-1 1 9V 9V 2 1.5V TP9 GND U1 U5 MCP3421 DS51683A_CN 7
MCP3421 1-2 MCP3421 DS51683A_CN 8
2 MCP3421 2.1 MCP3421 1. MCP3421 U1 U5 - U1 R12 - U5 2. PIC MCU PCI18F4550 U2 3. MPLAB ICD2 P2 4. USB 5. JP1 6. JP2 7. 9V BAT 1 9V 8. 1.5V AAA 9. 2 x 16 LCD LCD1 10. MCP73831 U3 11. SW1 SW2 SW3 SW4 12. R1 A B 2.1.1 MCP3421 9V MCU ADC 5V 9V 9V MCP3421 9V 9V 9V TP9 GND 1.5V AAA 1.5V 10 mω 100Ω U3 MCP73831 V BAT 2.1.2 MCU PIC18F4550 44 TQFT ADC LCD MCU 2.1.3 LCD LCD 2 x 16 PIC18F4550 LCD DS51683A_CN 9
MCP3421 2.1.4 50% 2.1.5 USB PIC18F4550 USB PIC18F4550 USB 2.1.6 MPLAB ICD2 MCP3421 PIC18F4550 MCU ADC MCU LCD ICD In-Circuit Serial Programming ICSP 8 MCU MPLAB ICD2 MPLAB ICD2 MCP3421 ICD-2 ICSP AC164110 2.1.7 MCP3421 JP1 JP2 JP1 JP1 JP2 Microchip Technology Inc. JP1 JP2 2.1.8 MCP3421 5 SW1 SW2 SW3 SW4 SW MCLR MCU 2.1.9 R1 ADC 2.2.1 5 2.1.10 MCP3421 MCU ADC SCL SDA I 2 C SCL SDA SYNC U3 Prog 1 Prog 2 C-STAT DS51683A_CN 10
2.2 MCP3421 MCP3421 MCP3421 JP1 100Ω R11 U1 ADC ADC R12 R11 LCD + 2.2.1 1 JP1 2 JP2 1. JP1 JP2 2. 9V J1 9V TP11 9V 9V 9V 3. LED D3 LCD Microchip 4. LCD JP2 JP1 S1 5. S1 LCD TP9 1.5V S1 1.5V 1.5V TP9 GND 1.5V AAA S1 DS51683A_CN 11
MCP3421 6. LCD V = +1.5203062 V I = +0.0141780 A 0.02452 mah 1.5V AAA TP9 GND U1 U5 LCD LCD I U1 U5 Microchip Technology Inc. DS51683A_CN 12
ADC R1 ADC LCD ADC 1. TP9 TP4 2. LCD LCD Digital Volt Meter DVM ADC MCP3421 U5 MCP3421 2.048V MCP3421 U5 2.048V MCP3421 R3 R4 R1 R1 TP9 50% MCP3421 U5 U2 U5 2 LCD U1 ADC U5 ADC = 2 * ADC = < 50% * mah= mas/3600 N mah Fuel Used (mah) = Discharging Fuel (mah) mah i = 0 2-1 MCP3421 DS51683A_CN 13
MCP3421 mah = = 170 mah4.2v U1 ADC U5 ADC = 2 * ADC = < 50% * mah= mas/3600 N Fuel mah Used (mah) = Discharging Fuel (mah) mah i = 0 U1 ADC U5 ADC mah = mah + mah 2-2 MCP3421 Microchip Technology, Inc. DS51683A_CN 14
A MCP3421 Microchip www.microchip.com A.1 MCP3421 PCB DS51683A_CN 15
MCP3421 A.2 M DS51683A_CN 16
A.3 BOARD EDGE A.4 DS51683A_CN 17
MCP3421 DS51683A_CN 18
B BOM MCP3421 Microchip www.microchip.com B-1 BOM 1 BAT1 9V Gold Peak 29A 1 BAT1 + lug CONN BATT 9V MALE OFF-BRD SNAP 1 BAT1 - lug CONN BATT 9V FEMALE OFF-BRD SNAP Keystone Electronics 635 Keystone Electronics 636 0 BAT2 25x20x5 mm 3.7V 170mAh RC PL-052025 1 BAT3 IC Kobiconn 13IC307 1 BAT3 IC Kobiconn 13IC308 1 BAT3 HOLDER BATTERY 1CELL AAA 6"LEAD Keystone Electronics 2467 1 BT3 AAA ALKA-CELL Gold Peak GP24AU-OS2 1 BUZZER PIEZO BUZZER PIEZO 4KHZ 17.5MM SMT Mallory Sonalert Products Inc AST100Q 9 C1, C4, C7, C9, C10, C11, C12, C13, C19 CAP.1UF 16V CERAMIC X7R 0603 Panasonic - ECG ECJ-1VB1C104K 2 C2, C3 CAP CERAMIC 4.7UF 6.3V X5R 0603 3 C5, C17, C18 CAP 1.0UF 16V CERAMIC X5R 0603 Panasonic - ECG Panasonic - ECG ECJ-1VB0J475K ECJ-1VB1C105K 1 C6 CAP CER.33UF 16V X7R 0603 Murata Electronics GRM188R71C334KA01D 2 C8, C14 CAP CER 10UF 6.3V X5R 0603 Murata Electronics GRM188R60J106ME47D 2 C15, C16, CAP CERAMIC 18PF 50V Panasonic - ECG ECJ-1VC1H180J 0603 SMD 1 D1 LED THIN 565NM GRN DIFF 0805 SMD Lumex Inc. SML-LXT0805GW-TR PCB BOM RoHS DS51683A_CN 19
BOM B-1 10 D2, D6, D7, D8, D9, D10, D11, D12, D13, D14 LED THIN 635NM RED DIFF 0805 SMD Lumex Inc. SML-LXT0805IW-TR 1 D3 Lumex Opto/Components Inc Lumex Inc. SML-LX15IC-TR 1 D4 DIODE SWITCH 100V 150MA SOD123 Micro Commercial Co. 1N4148W-TP 1 D5 DIODE SWITCHING 100V DO35 Micro Commercial Co. 1N914B-TP 4 Ea. Corner SCREW MACH PHIL 4-40X1/4 NYLON Building Fasteners NY PMS 440 0025 PH 4 Ea. Corner STANDOFF HEX.375/4-40THR Keystone Electronics 1,902B NYLON 1 J1 CONN POWER JACK 2.5MM PCB CUI Inc PJ-102B CIRC 2 JP1, JP2 CONN HEADER VERT 2POS.100 TIN Tyco Electronics/Amp 3-644695-2 0 JP3 2 SHNTS SHUNT LP W/HANDLE 2 POS 30AU Tyco Electronics/Amp 881545-2 JP1 JP2 1 L1 INDUCTOR FIXED SMD 10UH 10% Panasonic - ECG ELJ-FC100KF 1 LCD1 16 X 2 LCD Fema CG1626-SGR1 0 P2 Tyco Electronics/Amp 3-644456-6 1 PCB RoHS PCB 104-00121 MCP3421 1 R1 POT 200K OHM THUMBWHEEL CERM ST Bourns Inc. 3352T-1-204LF 7 R2, R7, R10, R17, R18, R28, R29 RES 10.0K OHM 1/10W 1% 0603 SMD Vishay/Dale CRCW060310K0FKEA 1 R3 RES 510K OHM 1/10W 5% Rohm MCR03EZPJ514 0603 SMD 1 R4 RES 390K OHM 1/10W 5% Rohm MCR03EZPJ394 0603 SMD 1 R5 RES 100K OHM 1/10W 1% Vishay/Dale CRCW0603100KFKEA 0603 SMD 1 R6 RES 2.49K OHM 1/10W 1% Vishay/Dale CRCW06032K49FKEA 0603 SMD 2 R8, R9 RES 221 OHM 1/10W 1% Vishay/Dale CRCW0603221RFKEA 0603 SMD 1 R11 RES 100 OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF1000V 1 R12 RES CURRENT SENSE.010 OHM 3W Ohmite 13FR010E 9 R13, R14, R15, R19, R26, R27, R32, R33, R34 BOM RES 1.5K OHM 1/16W.5% 0603 SMD Susumu Co Ltd RR0816P-152-D 2 R16, R30, R31 RES 1.0K OHM 1/10W.5% 0603 SMD Yageo Corporation RT0603DRD071KL PCB BOM RoHS DS51683A_CN 20
BOM B-1 BOM 1 R20 RES 332 OHM 1/10W 1% 0603 SMD Vishay/Dale CRCW0603332RFKEA 2 R21, R22 RES 24.9 OHM 1/10W 1% 0603 SMD Vishay/Dale CRCW060324R9FKEA 0 R23 1 R24 RES 523 OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF5230V 1 R25 RES 4.7K OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ472V 2 R35, R36 RES 0.0 OHM 1/10W 5% 0603 SMD Yageo Corporation RC0603JR-070RL 5 S1, S2, S3, S4, S5 SWITCH LT TOUCH 6X3.5 100GF SMD Panasonic - ECG 12 TP1<>TP18 PC TEST POINT COMPACT SM Keystone Electronics 5016 1 U1 I 2 C 18 1 U2 USB 44 QFP 1 U3 / 1 U4 MCP1702 ma LDO 1 U5 I 2 C 18 Microchip Technology Inc. Microchip Technology Inc. Microchip Technology Inc. Microchip Technology Inc. Microchip Technology Inc. EVQ-PJS04K MCP3421A0T-E/OT PIC18F4550-I/PT MCP73831-2ACI/OT MCP73831-2ACI/OT MCP1702T-5002I/CB MCP3421A3T-E/OT 0 U6 1 USB1 CONN RECEPT MINI USB2.0 5POS Hirose Electronic Co. UX60-MB-5ST Ltd 1 X1 CRYSTAL 20.000MHZ 18PF FUND SMD Connor-Winfield XM-1-20.0000 PCB BOM RoHS DS51683A_CN 21
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