W78C51D Datasheet | Winbond

Preliminary W78C51D 8-BIT MICROCONTROLLER GENERAL DESCRIPTION The W78C51D microcontroller supplies a wider frequency and supply voltage range than most 8-bit microcontrollers on the market. It is patible with the industry standard 80C51 microcontroller series. The W78C51D contains four 8-bit bidirectional parallel ports, one extra 4-bit bit-addressable I/O port (Port 4) and two additional external interrupts ( INT2 , INT3 ), two 16-bit timer/counters, one watchdog timer and a serial port. These peripherals are supported by a seven-source, two-level interrupt capability. There are 128 bytes of RAM and an 4K byte mask ROM for application programs. The W78C51D microcontroller has two power...