Model:ATTINY28L-4AC BRAND:Microchip description:IC MCU 8BIT 2KB FLASH 32TQFP pack:tray SERIES:AVR? ATtiny status:Discontinued Core processor:AVR Core specifications:8-bit Speed:4MHz Peripherals:POR,WDT I/O number:11 Program storage capacity:2KB(1K x 16) Program memory type:Flash memory EEPROM capacity:- RAM size:- Voltage - powered by:2.7V ~ 5.5V Data converter:- Oscillator type:bosom Operating temperature:0°C ~ 70°C(TA) Type of installation:Surface mount type Encapsulation/Shell:32-TQFP Supplier device packaging:32-TQFP(7x7)