5v avr 20mhz tqfp- 32( 7x7) microcontroller units. 2kb of ram memory. the high- performance microchip picopower& reg; 8- bit avr& reg; risc- based microcontroller combines 32 kb isp flash memory with read- while- write capabilities, 1024b eeprom, 2 kb sram, 23 gen