AVR-MT128 development board Users Manual Rev.A, July 2008 Copyright(c) 2008, OLIMEX Ltd, All rights reserved INTRODUCT ION : AVR-MT128 is simple but powerful board which uses the MCU ATMega128 from Atmel. With its LCD, buttons, relay and variety of interfaces such as RS232 (in two variants 4 pins and DB9), JTAG, ISCP, Dallas, etc. this board is suitable for different embedded systems applications. BOARD FEATURES : - MCU: ATMega128-16AI with128K Bytes Program Flash, 4K Bytes data EEPROM, 4K Bytes RAM - JTAG connector for in-circuit programming and debugging with AVR- JTAG - ICSP 5x2 (10) pin STKxxx compatible connector for in-circuit programming with AVR-PG1B or AVR-PG2B - RS232 connector with TTL levels - RS232 interface circuit with Tx, Rx signals - RS232 DB9 female connector - Dallas touch button port - Frequency input - LCD 16x2 display - Status LED - Five buttons - Buzzer - Power supply circuit +5V, 78L05 with plug-in power jack and diode bridge - 32 768 Hz oscillator crystal - 16 MHz crystal oscillator - Power supply filtering capacitor - RESET supervisor IC ZM33064 - RELAY with 10A/250VAC NO and NC contacts with screw terminals - Extension headers for unused in the schematic ports available for external connection - PCB: FR-4, 1.5 mm (0,062 ), green soldermask, white silkscreen component print - Four mounting holes 3.3 mm (0.13 ) - Dimensions: 120x38 mm (4.7x1.5 ) ELECTROSTATIC WARNING: The AVR-MT128 board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board. BOARD USE REQUIREM ENTS : Cables: RS232 straight male-to-female DB9 cable (Note: this is not a null modem cable) Hardware: Programmer: AVR-PG1, AVR-PG2, AVR-ISP500, AVR-ISP500- TINY, AVR-ISP500-ISO or other compatible tool Debugger: AVR-JTAG, AVR-JTAG-USB or other compatible tool