Model:AT89C5122D-SISUM BRAND:Microchip description:IC MCU 8BIT 32KB FLASH 28PLCC pack:Pipe fittings SERIES:89C status:Discontinued Core processor:80C51 Core specifications:8-bit Speed:48MHz Peripherals:LED,POR,WDT I/O number:14 Program storage capacity:32KB(32K x 8) Program memory type:Flash memory EEPROM capacity:- RAM size:768 x 8 Voltage - powered by:3V ~ 5.5V Data converter:- Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:28-LCC(J lead) Supplier device packaging:28-PLCC(11.51x11.51)