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Reference documents for the 8051 Architecture. If you cannot find what you are looking for, please contact us at mcu@atmel.com.


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Software
Description
HEX2BIN.EXE
HEX2BIN.EXE
Utility to convert an Intel Hex file into the corresponding binary file.
BIN2HEX.EXE
BIN2HEX.EXE
Utility to convert a binary file into the corresponding Intel Hex file.
ASMB51.EXE
ASMB51.EXE
8051 Assembler
C51 Include Files for IAR, Keil, Raisonance, Tasking & SDCC Compilers
C51 Include Files for IAR, Keil, Raisonance, Tasking & SDCC Compilers
(294959, updated October 2007)
AT89ISP
AT89ISP
(6849334, updated January 1900)
AT89ISP Cable software
AT89C51SND1C, AT89C51SND2C USB Bootloader v1.6.2
AT89C51SND1C, AT89C51SND2C USB Bootloader v1.6.2
(6888, updated October 2002)
C Flash Drivers for the AT89C51RD2/ED2/ID2 for Keil Compiler rev 1.0.0
C Flash Drivers for the AT89C51RD2/ED2/ID2 for Keil Compiler rev 1.0.0
(, updated June 2003)
AT89C51CC03 CAN Bootloader v1.0.4
AT89C51CC03 CAN Bootloader v1.0.4
(48057, updated January 2006)
AT89C51CC03 UART Bootloader v1.2.0
AT89C51CC03 UART Bootloader v1.2.0
(5790, updated December 2007)
C Flash Drivers for the AT89C51CC03C for Keil Compiler v1.0.0
C Flash Drivers for the AT89C51CC03C for Keil Compiler v1.0.0
(33948, updated August 2003)
C Flash Drivers for the AT89C51CC03U and AT89C51AC3 for Keil Compiler v1.0.0
C Flash Drivers for the AT89C51CC03U and AT89C51AC3 for Keil Compiler v1.0.0
(35348, updated August 2003)
AT89C5132 USB Bootloader v1.6.2
AT89C5132 USB Bootloader v1.6.2
(6720, updated October 2002)
AT89C51 HID Keyboard demonstration software
AT89C51 HID Keyboard demonstration software
(67185, updated December 2003)
AT89C5131 USB Flash API Drivers 1.0.5
AT89C5131 USB Flash API Drivers 1.0.5
(43601, updated January 2004)
AT89C51SND1 UART Bootloader v1.1.0
AT89C51SND1 UART Bootloader v1.1.0
(1578, updated March 2004)
Example 8051 Timer0 in Mode 0 with Hard Gated Counters
Example 8051 Timer0 in Mode 0 with Hard Gated Counters
(22149, updated June 2004)
Example 8051 Timer0 in Mode 0 with Soft Gated Counters
Example 8051 Timer0 in Mode 0 with Soft Gated Counters
(22459, updated June 2004)
Example 8051 Timer0 in Mode 0 with Hard Gated Timer
Example 8051 Timer0 in Mode 0 with Hard Gated Timer
(23004, updated June 2004)
Example 8051 Timer0 in Mode 0 with Soft Gated Timer
Example 8051 Timer0 in Mode 0 with Soft Gated Timer
(22684, updated June 2004)
Example 8051 Timer0 in Mode 1 with Hard Gated Counters
Example 8051 Timer0 in Mode 1 with Hard Gated Counters
(22734, updated June 2004)
Example 8051 Timer0 in Mode 1 with Soft Gated Counters
Example 8051 Timer0 in Mode 1 with Soft Gated Counters
(22754, updated June 2004)
Example 8051 Timer0 in Mode 1 with Hard Gated Timer
Example 8051 Timer0 in Mode 1 with Hard Gated Timer
(23678, updated June 2004)
Example 8051 Timer0 in Mode 1 with Soft Gated Timer
Example 8051 Timer0 in Mode 1 with Soft Gated Timer
(23068, updated June 2004)
Example 8051 Timer0 in Mode 2 with Hard Gated Counters
Example 8051 Timer0 in Mode 2 with Hard Gated Counters
(22551, updated June 2004)
Example 8051 Timer0 in Mode 2 with Soft Gated Counters
Example 8051 Timer0 in Mode 2 with Soft Gated Counters
(22468, updated June 2004)
Example 8051 Timer0 in Mode 2 with Hard Gated Timer
Example 8051 Timer0 in Mode 2 with Hard Gated Timer
(21848, updated June 2004)
Example 8051 Timer0 in Mode 2 with Soft Gated Timer
Example 8051 Timer0 in Mode 2 with Soft Gated Timer
(21841, updated June 2004)
Example 8051 SPI with Master Mode (SS pin used)
Example 8051 SPI with Master Mode (SS pin used)
(27228, updated June 2004)
Example 8051 SPI with Slave Mode (SS pin used)
Example 8051 SPI with Slave Mode (SS pin used)
(26579, updated June 2004)
Example 8051 SPI without Master Mode (SS pin unused)
Example 8051 SPI without Master Mode (SS pin unused)
(27202, updated June 2004)
Example 8051 SPI without Slave Mode (SS pin unused)
Example 8051 SPI without Slave Mode (SS pin unused)
(26233, updated June 2004)
Code Examples for 8051 CAN
Code Examples for 8051 CAN
(40805, updated July 2004)
Code Examples for AT89C51XX ADC (10 bits)
Code Examples for AT89C51XX ADC (10 bits)
(33220, updated November 2004)
Code Examples for AT89C51XX ADC (8 bits)
Code Examples for AT89C51XX ADC (8 bits)
(31396, updated November 2004)
Program Examples for 8051 Keyboard
Program Examples for 8051 Keyboard
(22149, updated July 2004)
API Program Examples for Standard C51 Flash Products
API Program Examples for Standard C51 Flash Products
(18741, updated July 2004)
API Program Examples for C51 USB Flash Products
API Program Examples for C51 USB Flash Products
(14430, updated July 2004)
Atmel OCD51 Add On to Keil uVision
Atmel OCD51 Add On to Keil uVision
(582252, updated June 2007)
AT89LP Developer Studio
AT89LP Developer Studio
(11.3MB, updated September 2012)
AT89LP Developer Studio is an Integrated Development Environment (IDE) for Atmel's family of LP (Low Power) single-cycle core 8051 microcontrollers. The LP Studio IDE provides project management, text editor for code entry, cycle accurate simulation, and On-Chip-Debug. It runs on Windows OS.

What's New:
- KEIL, IAR, SDCC tool-chain support
- Multi-file Assembly and C source code support
- On-Chip Debug Assembly and C source code stepping
- New C-Based device simulator
- New Project Create Wizard
AT89ISP_Update3.3
AT89ISP_Update3.3
(332324, updated September 2010)
This will install the following drivers onto the AT89ISP software: AT89S8253, AT89S2051, AT89S4051, AT89LP2052, AT89LP4052, AT89LP213, AT89LP214, AT89LP216, AT89LP428, AT89LP828, AT89LP6440, AT89LP52. This version also includes a user-selectable parallel port option.
AT89LP ISP Studio
AT89LP ISP Studio
(3.96MB, updated September 2012)
The AT89LP ISP Studio software performs in-system programming (ISP) of Atmel AT89LP devices. It provides an intuitive interface for in-system programming that can be run from a personal computer. ISP studio programs target devices through an RS232 serial connection with a hardware board. REQUIRED MODULES:
- Microsoft .NET Framework (version 2.0 or above)
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