Key facts
- Brand
- Atmel
- Model
- AT89C5131A-L
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-03
Start here
Atmel AT89C5131A-L 8-bit Flash Microcontroller User Manual
This manual describes the AT89C5131A-L 8‑bit Flash microcontroller, highlighting its 80C52X2 core, up to 48 MHz core frequency, dual data pointer, enhanced UART, three 16‑bit timers, and a full‑speed USB 1.1/2.0 module with multiple programmable endpoints. It also covers the on‑chip Flash (16/32 KB), EEPROM, expanded RAM, programmable LED outputs, watchdog timer, and power‑management features.
The document provides detailed pinout diagrams for PLCC‑52, VQFP‑64 and SO‑28 packages, signal tables for keypad, PCA, serial I/O, timers, LEDs, TWI, SPI, ports, and clock sources, as well as information on operating modes, power‑down and idle states, and hardware specifications such as supply voltage range and package options.
Atmel AT89C5131A-L specifications
| Maximum core frequency | 48 MHz (X1 mode) / 24 MHz (X2 mode) |
|---|---|
| On‑chip Flash memory | 16 KB or 32 KB |
| Supply voltage range | 2.7 V to 3.6 V (3.0 V to 3.6 V required for USB) |
| USB compliance | USB 1.1 and 2.0 full‑speed compliant |
| Programmable LED outputs | 4 direct‑drive LED outputs |
Source: Atmel AT89C5131A-L 8-bit Flash Microcontroller User Manual
All Atmel AT89C5131A-L 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 AT89C5131A-L?
The core can run at up to 48 MHz in X1 mode and 24 MHz in X2 mode.
From: Atmel AT89C5131A-L 8-bit Flash Microcontroller User Manual
How many programmable LED outputs does the AT89C5131A-L provide?
It provides four direct‑drive LED outputs that can be programmed for different current levels.
From: Atmel AT89C5131A-L 8-bit Flash Microcontroller User Manual
What USB speeds does the AT89C5131A-L support?
It supports full‑speed USB 1.1 and 2.0 specifications.
How much flash memory is available on the AT89C5131A-L?
The device provides either 16 KB or 32 KB of on‑chip flash EEPROM.