8BIT MCU 8051 ROMLESS, 80C31, DIP40; Controller Family/Series:80C31; Core Size:8bit; No. of I/O's:32; RAM Memory Size:128Byte; CPU Speed:40MHz; Oscillator Type:External, Internal; No. of Timers:2; Peripherals:Timer; Digital IC Case Style:DIP; Supply Voltage Range:2.7V to 5.5V; Operating Temperature Range:-40°C to +85°C; No. of Pins:40; SVHC:No SVHC (20-Jun-2011); Clock Frequency:40MHz; IC Generic Number:80C31; Interface:UART; Interface Type:EUART; Logic Function Number:31; Memory Size:Romless; Memory Type:Romless; Microprocessor/Controller Features:80C31 Compatible, 5 interrupt sources, UART, Power down mode; No. of Bits:8; No. of I/O's:4; Number of bits In Timer:16; Operating Temperature Max:85°C; Operating Temperature Min:-40°C; Package / Case:DIP; Supply Voltage Max:5.5V; Supply Voltage Min:4.5V; Termination Type:Through Hole