W78C33B Description
The W78C33B microcontroller supplies a wider frequency range than most 8-bit microcontrollers on the market. It is functional patible with the industry standard 80C32 microcontroller series except the one extra 4-bit bit-addressable I/O port (Port 4). The W78C33B contains four 8-bit bidirectional parallel ports, three 16-bit timer/counters, and a serial port.