The Atmel ATMEGA88-20MAU is a low-power, high-performance 8-bit AVR RISC-based microcontroller that combines 8KB ISP flash memory, 1KB EEPROM, 1KB SRAM, 23 general-purpose I/O lines, 32 general-purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, a serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, and a 6-channel 10-bit A/D converter.

• Flash Memory: 8KB
• EEPROM: 1KB
• SRAM: 1KB
• I/O Lines: 23
• Working Registers: 32
• Timer/Counters: 3 with compare modes
• Interrupts: Internal and external
• USART: Serial programmable
• Serial Interface: Byte-oriented 2-wire
• SPI Port: Yes
• A/D Converter: 6-channel 10-bit
• Power Supply: 2.7V to 5.5V
• Package: 32-pin TQFP

The device operates on a single 2.7V to 5.5V power supply and is available in a small 32-pin TQFP package, making it ideal for space-constrained applications.