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AT89S4051 Datasheet 8-bit Microcontroller

Manufacturer: Atmel (now Microchip Technology)

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The AT89S2051/S4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with 2K/4K bytes of In-System Programmable (ISP) Flash program memory.

The device is manufactured using Atmel’s high-density nonvolatile memory technology and is patible with the industry-standard MCS-51 instruction set.

By bining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89S2051/S4051 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

Key Features

  • Compatible with MCS®51 Products.
  • 2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory.
  • Serial Interface for Program Downloading.
  • Endurance: 10,000 Write/Erase Cycles.
  • 2.7V to 5.5V Operating Range.
  • Fully Static Operation: 0 Hz to 24 MHz (x1 and x2 Modes).
  • Two-level Program Memory Lock.
  • 256 x 8-bit Internal RAM.
  • 15 Programmable I/O Lines.
  • Two 16-bit Timer/Counters.
  • Six Interrupt Sources.

More Datasheets from Atmel (now Microchip Technology)

Part Number Description
AT89S4D12 8-Bit Microcontroller with 132K Bytes Flash Data Memory
AT89S2051 8-bit Microcontroller
AT89S51 8-bit Microcontroller
AT89SND2CMP3B Single-Chip Flash Microcontroller
AT892051 8-Bit Microcontroller with 2K Bytes Flash
AT894051 8-Bit Microcontroller
AT89C1051 8-Bit Microcontroller with 1K Byte Flash
AT89C1051U 8-Bit Microcontroller with 1K Bytes Flash
AT89C2051 8-Bit Microcontroller
AT89C2051X2 8-bit Microcontroller

AT89S4051 Distributor