P89C58UBPN

8-bit Flash Microcontroller operating at a maximum clock frequency of 33 MHz. Features 32 I/O lines, an 8-bit external data bus, and a 16-bit address bus. Housed in a 40-terminal PDIP package (0.600 inch width, 52mm length) with dual terminal positioning. Commercial temperature grade, suitable for operation between 0°C and 70°C, with a nominal supply voltage of 5V (4.5V to 5.5V range).