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AT89C52 Datasheet 8-Bit Microcontroller with 8K Bytes Flash

Manufacturer: Atmel (now Microchip Technology)

Download the AT89C52 datasheet PDF. This datasheet also includes the AT8 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AT8-9C52.pdf) that lists specifications for multiple related part numbers.

General Description

The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory (PEROM).

The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 and 80C52 instruction set and pinout.

The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

Key Features

  • Compatible with MCS-51™ Products.
  • 8K Bytes of In-System Reprogrammable Flash Memory.
  • Endurance: 1,000 Write/Erase Cycles.
  • Fully Static Operation: 0 Hz to 24 MHz.
  • Three-level Program Memory Lock.
  • 256 x 8-bit Internal RAM.
  • 32 Programmable I/O Lines.
  • Three 16-bit Timer/Counters.
  • Eight Interrupt Sources.
  • Programmable Serial Channel.
  • Low-power Idle and Power-down Modes.

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