This post is about simple Atmega325 development board which I was designed and build to test some large AVR systems. This development board contains ATmega325 MCU and MAX232 base RS232 driver/receiver unit. Thanks to SMD packages and components dimensions of this board get limited to 85mm x 62mm. This development board requires 5V external power supply and all its external circuitries (RS232 driver and hardware CPU reset) can be enable/disable through on-board jumpers.

PCB design of this development board supports only for ATmega325 - TQFP64 package and MAX232 - SO16L package. This ATmega325 Development Board is release as an open hardware project and all its design files are available to download at the end of this article.

Project Related Downloads


Design files (including PCB) of ATmega325 Development Board

References


ATmega325 - 8-bit Atmel Microcontroller with In-System Programmable Flash
MAX232 - 5V-Powered, Multichannel RS-232 Drivers/Receivers