Specifications

• ATmega128 8-bit RISC CPU, running at 16MHz
• 32KB 2-wire serial ferromagnetic RAM (FM24C256-G)
• 2-wire serial real time clock (DS1307) providing additional square wave output 1-32KHz
• 3V lithium backup battery keeping time and date up to 5 years
• RS485 driver for two wire networking up to 1.5 km
• RS232 driver providing two serial interfaces
• step up voltage converter for 2-5V battery power supply or long supply wiring
• connector for standard LCD with adjustable negative contrast voltage output
• ISP connector
• JTAG connector
• all SMD assembly except analog voltage reference and header connectors which can be soldered manually according to your requirements
• CPU ports routed directly to connectors for unrestricted use (ESD protected by resistors)
• 5V operation
• credit card size (87 x 54mm)