Key facts
- Brand
- Winbond
- Model
- W78E52
- Category
- Other Electronics
- Documents
- 4
- Languages
- EN
- Last added
- 2012-05-11
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Winbond W78E52B Preliminary Manual
The W78E52B is an 8‑bit microcontroller compatible with the standard 8051 instruction set. It provides an 8 KB multiple‑time‑programmable ROM, 256 bytes of RAM, four 8‑bit bi‑directional I/O ports, an additional 4‑bit port, three 16‑bit timers, a watchdog timer and a full‑duplex UART. The device operates over a wide supply voltage range of 4.5 V to 5.5 V and includes power‑saving idle and power‑down modes.
The manual details pin configurations for DIP‑40, PLCC‑44 and PQFP‑44 packages, describes the block diagram, explains the operation of timers, ports and the watchdog, and provides programming and erase procedures for the on‑chip MTP‑ROM. Typical application circuits and package dimensions are also included.
Winbond W78E52 specifications
| Microcontroller type | 8-bit CMOS |
|---|---|
| On‑chip RAM | 256 bytes |
| Flash EEPROM size | 8 KB |
| Program memory address space | 64 KB |
| Data memory address space | 64 KB |
| I/O ports | Four 8‑bit bidirectional ports |
| Timers/counters | Three 16‑bit timer/counters |
| Serial interface | One full‑duplex serial port |
| Maximum operating frequency | DC‑40 MHz |
| Operating temperature range | 0 °C to 70 °C |
All Winbond W78E52 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the size of the flash EEPROM in the W78E52?
The W78E52 contains an 8 KB electrically erasable/programmable EPROM.
How many I/O ports does the W78E52 provide?
It provides four 8‑bit bidirectional ports.
What is the supply voltage range for the W78E52B?
The device operates from 4.5 V to 5.5 V.
What power‑saving modes are available?
The microcontroller supports an idle mode and a power‑down mode, both selectable by software.
What is the flash memory size of the W78E52C/W78E052C?
The microcontroller contains an 8 KB Flash EPROM.
From: Winbond W78E52C/W78E052C 8-bit Microcontroller Datasheet
How many I/O ports does the device provide?
It has four 8‑bit bi‑directional ports and an additional 4‑bit port (P4).
From: Winbond W78E52C/W78E052C 8-bit Microcontroller Datasheet