Model:AT89LP428-20MH BRAND:Microchip description:IC MCU 8BIT 4KB FLASH 32VQFN pack:tray SERIES:89LP status:in stock Core processor:8051 Core specifications:8-bit Speed:20MHz Peripherals:Undervoltage detection/reset,POR,PWM,WDT I/O number:30 Program storage capacity:4KB(4K x 8) Program memory type:Flash memory EEPROM capacity:512 x 8 RAM size:768 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:32-VFQFN Exposed pad Supplier device packaging:32-VQFN(5x5)