Key facts
- Brand
- Atmel
- Model
- AT89C5131A-M
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-03
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Atmel AT89C5131A-M Handbook
This handbook describes the AT89C5131A-M 8‑bit microcontroller, its core architecture, memory resources, and integrated USB functionality. It includes a feature overview, block diagram, pinout tables, and detailed signal descriptions for peripherals such as UART, SPI, TWI, timers, and the programmable counter array.
The document also covers power‑management modes, hardware watchdog operation, electrical characteristics, ordering information, and packaging options. It serves as a reference for designers and developers implementing the device in embedded applications.
Atmel AT89C5131A-M specifications
| Maximum core frequency | 48 MHz (X1 mode), 24 MHz (X2 mode) |
|---|---|
| On‑chip Flash memory | 16 KB or 32 KB |
| Bootloader Flash | 3 KB |
| Data EEPROM | 1 KB |
| Expanded RAM (ERAM) | 1 KB (1024 Bytes) |
| USB speed | Full‑speed USB 1.1/2.0 compliant |
| I/O pins | 34 |
| Operating voltage | 2.7 V to 5.5 V (3.3 V‑5.5 V for USB) |
| Temperature range | Industrial |
| Package options | PLCC‑52, VQFP‑64, QFN‑32 |
Source: ATMEL 8-bit Flash Microcontroller with Full Speed USB Device AT89C5130A-M AT89C5131A-M handbook
All Atmel AT89C5131A-M 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 maximum core frequency of the AT89C5130A/31A-M?
The core can run at up to 48 MHz in X1 mode (or 24 MHz in X2 mode).
From: ATMEL 8-bit Flash Microcontroller with Full Speed USB Device AT89C5130A-M AT89C5131A-M handbook
What is the operating voltage range?
It operates from 2.7 V to 5.5 V, with 3.3 V‑5.5 V required for USB operation.
From: ATMEL 8-bit Flash Microcontroller with Full Speed USB Device AT89C5130A-M AT89C5131A-M handbook
What is the maximum core frequency of the AT89C5130A/31A-M?
The device runs up to 48 MHz in X1 mode and 24 MHz in X2 mode.
How many I/O pins does the microcontroller provide?
It provides 34 general‑purpose I/O pins.
What is the maximum core frequency of the AT89C5131A-M?
It can run up to 48 MHz in X1 mode and 24 MHz in X2 mode.
How many USB endpoints does the device support?
It supports a control endpoint (EP0) and up to six programmable endpoints (EP1‑EP6).