Model:AT87C54X2-SLRUM BRAND:Microchip description:IC MCU 8BIT 16KB OTP 44PLCC pack:tape(TR) SERIES:87C status:Discontinued Core processor:80C51 Core specifications:8-bit Speed:40/20MHz Peripherals:POR,WDT I/O number:32 Program storage capacity:16KB(16K x 8) Program memory type:OTP EEPROM capacity:- RAM size:256 x 8 Voltage - powered by:4.5V ~ 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)