Model:AT89C4051-24PI BRAND:Microchip description:IC MCU 8BIT 4KB FLASH 20DIP pack:Pipe fittings SERIES:89C status:Discontinued Core processor:8051 Core specifications:8-bit Speed:24MHz Peripherals:Undervoltage detection/reset,LED,POR I/O number:15 Program storage capacity:4KB(4K 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:通孔 Encapsulation/Shell:20-DIP(0.300",7.62mm) Supplier device packaging:20-PDIP