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AT89C5122 Datasheet (AT8xx512x) Smart Card Reader ICs

Manufacturer: Atmel (now Microchip Technology)

Download the AT89C5122 datasheet PDF. This datasheet also includes the AT85C5122 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AT85C5122_ATMELCorporation.pdf) that lists specifications for multiple related part numbers.

General Description

AT8xC5122 is a high-performance CMOS derivative of the 80C51 8-bit microcontrollers optimized for USB keyboard with smart card reader applications.

AT8xC5122 retains the

Key Features

  • 80C51 Core :.
  • 6 Clocks per Instruction.
  • Speed up to 16 MHz 768 Bytes RAM AT83C5122: 32 Kbytes ROM AT83C5123: 30 Kbytes ROM AT85C5122: 32 Kbytes Code RAM and 32 Kbytes ROM AT89C5122 : 32 Kbytes Flash AT85EC5122, AT83EC5123, AT83EC5122: Additional 512 Bytes EEPROM (AT24C04) Multi-protocol Smart Card Interface.
  • Certified According to ISO7816, EMV2000, GIE-CB and WHQM Standards.
  • Asynch.