Skip to product information
1 of 2


ATMEL 89C2051 IC

ATMEL 89C2051 IC

Regular price Rs. 144
Regular price Rs. 230 Sale price Rs. 144
Sale Sold out 37% off Best Price Guaranteed
You save Rs. 86
Incl. GST (No Hidden Charges)
  • Compatible with MCS®-51 Products 
  • 2K Bytes of Reprogrammable Flash Memory
  • Low-power Idle and Power-down Modes 
  • Direct LED Drive Outputs
  • On-chip Analog Comparator
  • Programmable Serial UART Channel

ATMEL 89C2051 IC

The Atmel AT89C2051 IC is a low-voltage, high-performance CMOS 8-bit microcomputer with 2K 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 MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C2051 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications.
The AT89C2051 provides standard features like 2K bytes of Flash, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and clock circuitry. In addition, the AT89C2051 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 power-down mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset.


ATMEL AT89C2051 IC Pinout
Pinout Of ATMEL AT89C2051 IC Pinout


  • Electronic Timers
  • Temperature Control Systems
  • Home Automation
  • Robotics
  • Automotive Applications

Package Includes:

  • 1 x ATMEL 89C2051 IC


Reprogrammable Flash Memory 2K Bytes
Endurance 10,000 Write/Erase Cycles
Operating Range 2.7V to 6V
Fully Static Operation 0Hz to 24MHz
Internal RAM 128 x 8-bit
Programmable I/O Lines 15

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

View full details

Found a better price?

Let us know!
We'll try to match the price for you

  • ⚡ Dispatched within 24 hours

  • 💰 Earn RC Coins on every purchase

  • 🚚 Free shipping on orders above Rs 500/-

  • 🛠️ Dedicated Technical Support Team

1 of 4


1.What is 89c2051?

  • The Atmel AT89C2051 is a low-voltage, high-performance CMOS 8-bit microcomputer. It features 2K bytes of flash programmable and erasable read-only memory (PEROM), 15 I/O lines, 2 timers/counters, 6 interrupts/2 priority levels, an analog comparator, LED drive outputs, a UART, and 128 bytes of on-chip RAM. The device is based on the 8051 architecture and is manufactured using Atmel's high-density nonvolatile memory technology, making it compatible with the industry-standard MCS-51 instruction set. It is a small and cheap microcontroller with a 2.7-6V operating range.

2.What uses AT89C2051?

  • The Atmel AT89C2051 is an 8-bit microcontroller with 2K bytes of Flash, 128 bytes of RAM, and 15 I/O lines. This microcontroller has been used in various applications including:
    • Digital clocks
    • Countdown timers
    • Data loggers
    • Caller ID using DTMF decoders
    • Robots
    • Vending machines
    • Stepper motor controllers
    • USB, I²C, SPI, and CANbus controllers