Features
 A development board for Atmel 40 pin AVR microcontrollers.
 PCB-AVR1284-3U is a bare PCB only (unpopulated, no parts provided). The BOM parts list
and schematic diagram are available for download from
http://www.busboard.us/products/PCB-AVR1284-3U/
 Can be used with Atmel 16k, 32k, 64k or 128k AVR microcontrollers
(ATMEGA164PA, ATMEGA324PA, ATMEGA644PA, or ATMEGA1284P).
 Each GPIO port is brought out to a 2x8 header footprint with power and ground for easy
expansion. All connectors are on a 0.1” grid to allow protoboard expansion boards.
 Two serial ports circuits are provided for use with MAX202 or MAX3232 interface ICs (16-pin
DIP). ComBoard serial port expansion boards can be used also.
 All peripheral pins are brought to connectors. ISP and JTAG connector for debugging.