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AT89S51 Microcontroller – 8-Bit CMOS Microcontroller with 4K Flash
₹89.0
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The AT89S51 Microcontroller is a high-performance, low-power 8-bit CMOS microcontroller from Atmel’s 8051 family. Designed for embedded control applications, it integrates 4K bytes of In-System Programmable Flash memory, 128 bytes of RAM, 32 I/O lines, two 16-bit timers/counters, a six-vector two-level interrupt architecture, a full duplex serial port, and on-chip oscillator and clock circuitry.
This microcontroller is highly reliable, easy to program, and ideal for beginner as well as advanced embedded system projects. With its compact design and robust performance, the AT89S51 is widely used in automation, robotics, consumer electronics, and industrial control systems.
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Product Specifications
| Specification | Details |
|---|---|
| CPU | 8-bit |
| Flash Memory | 4K Bytes In-System Programmable (ISP) |
| RAM | 128 Bytes |
| EEPROM | Not Available |
| Operating Voltage | 4.0V – 5.5V |
| I/O Lines | 32 Programmable I/O lines |
| Timers/Counters | 2 × 16-bit timers/counters |
| Interrupts | 6 interrupt sources with 2 priority levels |
| Oscillator | On-chip oscillator and clock circuitry |
Key Features
- Low-power CMOS 8-bit microcontroller
- 4K ISP Flash memory
- 128 bytes on-chip RAM
- 32 I/O programmable lines
- Two 16-bit timers/counters
- Full duplex UART serial communication
- Compatible with MCS-51 instruction set
- Supports ISP and IAP programming
- Six interrupt sources with two priority levels
- On-chip oscillator and clock circuitry
Applications
- Embedded system projects
- Industrial automation
- Robotics and mechatronics
- Consumer electronics
- Smart appliances
- Sensor interfacing
- Motor control systems
- Data acquisition systems
- Educational microcontroller learning kits
Inside the Box
- 1 × AT89S51 Microcontroller (40-pin DIP package)
- Antistatic protective packaging
Frequently Asked Questions
The AT89S51 has In-System Programmable (ISP) Flash memory, while the AT89C51 requires a parallel programmer.
Yes, it is fully compatible with the MCS-51 instruction set, making it easy to migrate existing 8051 projects.
Yes, you can use an Arduino or dedicated USB ISP programmer to program the AT89S51.
