Key facts
- Brand
- Winbond
- Model
- W78C32B
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-11
Start here
Winbond W78C32B 8-bit Microcontroller Datasheet
The W78C32B is an 8‑bit CMOS microcontroller with a wide frequency range and compatibility with the 80C32 series. It includes four 8‑bit bidirectional ports, three 16‑bit timer/counters, a full‑duplex serial port, 256 bytes of on‑chip RAM, and supports ROMless operation.
Key features include low standby current, two software‑selectable power‑management modes (idle and power‑down), 64 KB program and data memory spaces, and a built‑in Boolean processor. Electrical specifications cover operating voltage, current consumption, and temperature limits, while package data list DIP‑40, PLCC‑44, and QFP‑44 options.
Winbond W78C32B specifications
| Program memory address space | 64 KB |
|---|---|
| Data memory address space | 64 KB |
| On‑chip RAM | 256 bytes |
| I/O ports | Four 8‑bit bidirectional ports |
| Timers/Counters | Three 16‑bit timer/counters |
| Serial port | One full‑duplex serial port |
| Operating voltage (typical) | 5 V ±10 % |
| Maximum operating temperature | 70 °C |
| Storage temperature range | -55 °C to +150 °C |
All Winbond W78C32B documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What power‑management modes does the W78C32B support?
It provides two software‑selectable power‑management modes: idle mode and power‑down mode.
How much on‑chip RAM does the W78C32B contain?
The device includes 256 bytes of on‑chip RAM.
What power‑management modes does the W78C32B support?
The microcontroller provides two software‑selectable power‑reduction modes: idle mode, which stops the processor clock while keeping peripherals active, and power‑down mode, which stops all clocks including the oscillator.
How many bytes of on‑chip RAM are available?
The device contains 256 bytes of on‑chip scratchpad RAM.
What power‑reduction modes does the W78C32B support?
It has two software‑selectable modes: idle mode, which stops the processor clock while keeping peripherals active, and power‑down mode, which stops the crystal oscillator for minimum power consumption.
How many general‑purpose I/O ports are available?
The device provides four 8‑bit bidirectional I/O ports.