Model:AT89C2051-24SI BRAND:Microchip description:IC MCU 8BIT 2KB FLASH 20SOIC pack:Pipe fittings SERIES:89C status:Discontinued Core processor:8051 Core specifications:8-bit Speed:24MHz Peripherals:LED I/O number:15 Program storage capacity:2KB(2K x 8) Program memory type:Flash memory EEPROM capacity:- RAM size:128 x 8 Voltage - powered by:4V ~ 6V Data converter:- Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:20-SOIC(0.295",7.50mm width) Supplier device packaging:20-SOIC