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89C51AC2 - Enhanced 8-bit Microcontroller

General Description

The A/T89C51AC2 is a high performance Flash version of the 80C51 single chip 8-bit microcontrollers.

It contains a 32 KB Flash memory block for program and data.

The 32 KB Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software.

Key Features

  • 80C51 Core Architecture.
  • 256 Bytes of On-chip RAM.
  • 1 KB of On-chip XRAM.
  • 32 KB of On-chip Flash Memory.
  • Data Retention: 10 Years at 85°C Read/Write Cycle: 10K.
  • 2 KB of On-chip Flash for Bootloader.
  • 2 KB of On-chip EEPROM Read/Write Cycle: 100K.
  • 14-sources 4-level Interrupts.
  • Three 16-bit Timers/Counters.
  • Full Duplex UART Compatible 80C51.
  • Maximum Crystal Frequency 40 MHz, in X2 Mode, 20 MHz (CPU C.

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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
89C5122 AT89C5122
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89C51RC AT89C51RC

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Features • 80C51 Core Architecture • 256 Bytes of On-chip RAM • 1 KB of On-chip XRAM • 32 KB of On-chip Flash Memory – Data Retention: 10 Years at 85°C Read/Write Cycle: 10K • 2 KB of On-chip Flash for Bootloader • 2 KB of On-chip EEPROM Read/Write Cycle: 100K • 14-sources 4-level Interrupts • Three 16-bit Timers/Counters • Full Duplex UART Compatible 80C51 • Maximum Crystal Frequency 40 MHz, in X2 Mode, 20 MHz (CPU Core, 20 MHz) • Five Ports: 32 + 2 Digital I/O Lines • Five-channel 16-bit PCA with: – PWM (8-bit) – High-speed Output – Timer and Edge Capture • Double Data Pointer • 21-bit Watchdog Timer (7 Programmable Bits) • 10-bit Resolution Analog to Digital Converter (ADC) with 8 Multiplexed Inputs • On-chip Emulation Logic (Enhanced Hook System) • Power Saving Modes: – Idle Mode – Pow