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Developed by ATMEL as a successor to the popular T89C51RD2, AT89C51ED2 is an 8-bit microcontroller with powerful features
Ideal for Internet of Things (IoT) applications.

AT89C51ED2 - IC 8051 MCU FLASH 64K 40DIP
Part No. Description Price Stock
AT89C51ED2-SLSIM (44 PLCC) IC 8051 MCU FLASH 64K 44PLCC $12 33
AT89C51ED2-3CSIM (40 DIP) IC 8051 MCU FLASH 64K 40DIP $16 405
AT89C51ED2-RDTIM (64 QFP) IC 8051 MCU FLASH 64K 64VQFP $19 11
AT89C51ED2-RLTIM (44 VQFP) IC 8051 MCU FLASH 64K 44VQFP $19
∗ Standard lead time is 1 week

AT89C51ED2 is a highly reliable microcontroller that is used in many BiPOM boards, including some of our custom projects.


  • 64K Flash program memory
  • 2K RAM
  • Watchdog Timer, Brownout Detector
  • Capture and Compare Inputs
  • 9-sources of 4-level Interrupts
  • Hardware UART and SPI serial interfaces
  • 32 general purpose I/O pins ( with 48 I/O pin option in larger packages )