AT89S52 8051 IC DIP Mount 8 Bit Microcontroller


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  • Compatible with MCS-51Products
  • 8K Bytes of In-System Programmable (ISP) Flash Memory – Endurance: 10,000 Write/Erase Cycles
  • 4.0V to 5.5V Operating Range
  • Fully Static Operation: 0 Hz to 33 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
  • Full Duplex UART Serial Channel
  • Low-power Idle and Power-down Modes
  • Interrupt Recovery from Power-down Mode
  • Watchdog Timer
  • Dual Data Pointer
  • Power-off Flag
  • Fast Programming Time
  • Flexible ISP Programming (Byte and Page Mode) In addition, the AT89S52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning.


The AT89S52 is a low-power, high-performance CMOS 8-bit micro controller with 8K bytes of in-system programmable Flash memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pin out. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel AT89S52 is a powerful micro controller which provides a highly-flexible and cost-effective solution to many embedded control applications.

Technical Specifications

Weight 8 g
CPU 8-bit PIC
Number of Pins 40
Operating Voltage 4V – 5.5V
Number of Programmable I/O pins 32
RAM Bytes 256 x 8-bit
Program Memory (KB) 8KB
External Oscillator Up to 23Mhz


  • Multiple DIY Projects
  • Very good choice if you are learning ATmel
  • Projects requiring Multiple I/O interfaces and communications
  • Replacement for Arduino Module
  • Ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications
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