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AT89C5131
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USB C51-based Microcontroller with 32K Bytes Flash.
Not recommended for new design: replaced by AT89C5131A-L (full compatibility) or AT89C5131A-M (extended 2.7-5.5V range).
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AT89C5131 Mature (176 pages, revision C, updated 4/05)
AT89C5131 Errata (5 pages, revision E, updated 3/08)
AT89C5131 USB Bootloader (34 pages, revision E, updated 04/08)
 
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External Brown-out Protection for C51 Microcontrollers with Active High Reset Input (15 pages, updated 11/02)
This Application Note shows in detail how to prevent system malfunction during periods of insufficient power supply voltage.
Programming T89C51xx and AT89C51xx with Device Programmers (13 pages, revision D, updated 06/05)
Implementing the USB Enumeration Process on the AT8xC5131/32/22 and AT8xC51SND1 (14 pages, updated 10/03)
This application note describes a way to implement the enumeration process on AT8xC5131/32/22 and AT8xC51SND1 products.
How to Connect C51 Microcontroller to ATR2406 (9 pages, revision A, updated 05/06)
This application note describes how to control an ATR2406 with a C51 microcontroller(AT89C5130A for example).
USB Communication Device Class - Migration from RS-232 to USB (9 pages, revision 1.2.1, updated 01/04)
This document has two main objectives. The first one is to describe how to easily migrate from a RS-232 to the USB into the firmware using the Atmel USB RS232 Virtual COM port library. The second one is to describe how to build a USB <-> RS-232 bridge, using the Atmel library.
USB Generic Implementation Based on HID Class (6 pages, revision A, updated 06/06)
The aims of this document are: to describe how to use a specific USB implementation, without developping the corre-sponding USB Host driver. As well as to describe the way to use USB, without writing a USB code.
  Other Related Application Notes
  
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Code Examples: C51 Keyboard Code Examples
C51 SPI Code Examples
C51 Timer0 Code Examples
C51 Timer1 Code Examples
C51 Timer2 Code Examples
C51 TWI Code Examples
C51 UART Code Examples
C51 Watchdog Program Examples
Development Software: FLIP
Reference: C51 Architecture Reference Utilities
Hardware Interface Connection Examples for C51 MCU
Starter Kit: AT89STK-05
Software Files: AT89C51 HID Keyboard demonstration software
AT89C5131 USB Flash API Drivers 1.0.5
C51 Include Files for IAR, Keil, Raisonance, Tasking & SDCC Compilers
UART Bootloader HEX files for AT89C5131
USB Bootloader Low Pin Count software HEX 1.0.3 for AT89C5131
USB Bootloader Software HEX 1.0.3 for AT89C5131
 
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C51 Keyboard Code Examples
C51 SPI Code Examples
See more FAQs
  
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Building a RS-232 to USB Bridge using an AT89C5131 Microcontroller (Article, 2 pages, updated 6/04)