RoHS: no. Component family: microcontroller. Housing: PCB soldering. Housing: DIP40. Configuration: PCB through-hole mounting. Number of terminals: 40. MCU type: 8-bit microcontroller. MCU circuit family: MCS51. Maximum CPU clock frequency: 12 MHz. Number of I/O: 32. Program storage memory: 8 KByte. Program storage memory type: OTP. Storage memory capacity: 256 Byte. Storage memory type: SRAM. Digital interface circuits: UART. Minimum supply voltage (V): +4.5V. Maximum supply voltage (V): +5.5V. Operating temperature range min (°C): -40°C. Operating temperature range max (°C): +85°C