W78C32C is an 8-bit CMOS microcontroller with low standby current, full static design, DC-40MHz operation frequency, 256 bytes on-chip memory, ROMless operation, 64K bytes of program memory address space, 64K bytes of data memory address space, four 8-bit bidirectional parallel ports, three 16-bit timers/counters, one full-duplex serial port, Boolean processor, six sources, two-level interrupt capability, and built-in power management.
The W78C32C is an 8‑bit CMOS microcontroller with a fully static design, offering four 8‑bit bidirectional ports, three 16‑bit timer/counters, a full‑duplex serial port, and 256 bytes of on‑chip RAM. It supports ROMless operation and operates from 4.5 V to 5.5 V with a maximum clock frequency of 40 MHz.
The document details pin configurations for DIP, PLCC, and QFP packages, describes power‑management modes (idle and power‑down), and lists absolute maximum ratings, DC/AC electrical characteristics, and timing parameters for program fetch, read, and write cycles. Package dimensions for both DIP and QFP versions are also provided.
| Operating Voltage | 4.5 V – 5.5 V (typical 5 V) |
|---|---|
| Idle Current | 6 mA (typical) |
| Power‑down Current | 50 µA (typical) |
| Operating Temperature | 0 °C to 70 °C |
| Package Types | 40‑pin DIP, 44‑pin PLCC, 44‑pin QFP |
The device can operate up to 40 MHz.
It provides four 8‑bit bidirectional parallel ports.
The microcontroller supports idle mode and power‑down mode.
The chip includes 256 bytes of RAM.