Model:AT89LP51-20JU BRAND:Microchip description:IC MCU 8BIT 4KB FLASH 44PLCC pack:Pipe fittings SERIES:89LP status:in stock Core processor:8051 Core specifications:8-bit Speed:20MHz Peripherals:Undervoltage detection/reset,POR,PWM,WDT I/O number:36 Program storage capacity:4KB(4K x 8) Program memory type:Flash memory EEPROM capacity:- RAM size:256 x 8 Voltage - powered by:2.4V ~ 5.5V Data converter:- Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:44-LCC(J lead) Supplier device packaging:44-PLCC(16.6x16.6)