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AT89C2051 Microcontroller – 8-bit 20-Pin CMOS Microcontroller with 2K Flash
₹59.0
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The AT89C2051 is a low-voltage, high-performance 8-bit CMOS microcontroller based on the popular Intel 8051 architecture. It comes with 2K bytes of Flash memory, 128 bytes of RAM, and 15 programmable I/O lines, making it an excellent choice for compact embedded applications.
Its small 20-pin DIP package makes it ideal for projects with space constraints while still offering powerful features like two 16-bit timers, UART serial communication, six interrupt sources, and an on-chip oscillator. The AT89C2051 is widely used in consumer electronics, robotics, automation, and student projects due to its simplicity and reliability.
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Product Specifications
| Specification | Details |
|---|---|
| CPU | 8-bit 8051 compatible |
| Flash Memory | 2K Bytes |
| RAM | 128 Bytes |
| EEPROM | Not available |
| Operating Voltage | 4.0V – 5.5V |
| I/O Pins | 15 programmable I/O lines |
| Timers/Counters | 2 × 16-bit timers/counters |
| Interrupts | 6 interrupt sources with 2 priority levels |
| Communication Interface | Full duplex UART serial port |
| Oscillator | On-chip oscillator and clock circuitry |
| Package Type | 20-pin DIP |
Key Features
- Low-power CMOS 8-bit microcontroller
- 2K in-system programmable Flash memory
- 128 bytes on-chip RAM
- 15 programmable I/O lines
- Two 16-bit timers/counters
- Full-duplex UART serial communication
- 6 interrupt sources
- On-chip oscillator and clock circuitry
- Compact 20-pin DIP package
- Compatible with MCS-51 instruction set
Applications
- Embedded system projects
- Robotics and automation
- Consumer electronics
- Industrial control systems
- Smart home devices
- Student and academic projects
- Sensor interfacing
- Portable electronic devices
Inside the Box
- 1 × AT89C2051 Microcontroller (20-pin DIP package)
- Anti-static protective packaging
Frequently Asked Questions
Yes, it is fully compatible with the MCS-51 instruction set, making it easy to use with standard 8051 development tools.
Yes, it can be programmed using Arduino as ISP or with dedicated 8051 programmers.
