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Atmel AT89S4051

The Atmel AT89S4051 is an 8051-based 6-cycle microcontroller. 15 Programmable I/O Lines, Enhanced UART, Enhanced SPI interface, Watchdog Timer, Analog Comparator, 4-level Interrupt Priority Two 16-bit Enhanced Timer/Counters with 8-bit PWM Low Power Idle and Power-down Modes, Brown-out Detector and Power-off Flag 4 KBytes Flash ROM 256 Bytes RAM.

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Development Tools
Compiler, Assembler, Linker, Debugger
Data Sheets
Data Sheet for the Atmel AT89S4051
Data Sheet
1,004,988 bytes
Instruction Set Manual for the Atmel AT89S4051
Instruction Set Manual
178,311 bytes

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Header Files
Device Programmers
Real-Time OS
Simulated Features
Simulation for this device is provided by the default peripheral simulation driver.

Complete peripheral simulation is not available and is not planned to be implemented by ARM.

The following on-chip peripherals are simulated by the Keil Software µVision Debugger.

AGSI Drivers

The following AGSI Drivers are available for the Keil Software µVision Simulator.

AGDI Drivers

The following AGDI Drivers are available for the Keil Software µVision Debugger.

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