Model:AT89C5131A-S3SIM BRAND:Microchip description:IC MCU 8BIT 32KB FLASH 52PLCC pack:Pipe fittings SERIES:AT89C513x status:Discontinued Core processor:80C51 Core specifications:8-bit Speed:48MHz Peripherals:LED,POR,PWM,WDT I/O number:34 Program storage capacity:32KB(32K x 8) Program memory type:Flash memory EEPROM capacity:4K x 8 RAM size:1.25K x 8 Voltage - powered by:2.7V ~ 5.5V Data converter:- Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:52-LCC(J lead) Supplier device packaging:52-PLCC(19.15x19.15)