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Other Customization: Customized packaging(Min. Order: 20 Pieces) Trade Assuranceprotects your Alibaba.com orders Payments: Online Transfer Aliba

Products > Other Module > Other Customization: Customized packaging(Min. Order: 20 Pieces) Trade Assuranceprotects your Alibaba.com orders Payments: Online Transfer Aliba
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Other Customization: Customized packaging(Min. Order: 20 Pieces) Trade Assuranceprotects your Alibaba.com orders Payments: Online Transfer Aliba


Main control chip: PIC16F877A (DIP40)

Lead IO: All IO 2.54mm pin headers are taken out for convenient secondary development!
Download interface: standard ICSP interface
Crystal oscillator circuit: 4Mhz system crystal oscillator
Voltage input: USB-5V input DV-5V input
CR20123V backup battery
Button LED: 1 power switch, 1 reset button, 4 independent buttons 4*4 matrix keyboard, 8 green LEDs, 1 buzzer

shared：


1. Dimensions
PCB board frame: 104*82MM
PCB process: plate thickness 16MM, red solder mask, white silk screen
2.Master control system
Main control chip: PIC16F877A (DIP40)

Lead IO: All IO 2.54mm pin headers are taken out for convenient secondary development!
Download interface: standard ICSP interface
Crystal oscillator circuit: 4Mhz system crystal oscillator
Voltage input: USB-5V input DV-5V input
                      CR20123V backup battery
Button LED: 1 power switch, 1 reset button, 4 independent buttons 4*4 matrix keyboard, 8 green LEDs, 1 buzzer

3.Onboard peripherals
EEPROM: AT24C02, I2C bus
Clock module: DS1302
RS232 communication: MAX232, USART bus
Infrared receiving: HS0038
Adjustable resistance: 2pcs 10K adjustable resistors for ADC experiment
                                    1pcs 10K adjustable resistor for LCD contrast adjustment


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