AT89S51 Microcontroller – 8051-Based 8-Bit Controller IC (DIP-40) with 4KB Flash
The AT89S51 is a high-performance 8-bit microcontroller based on the popular 8051 architecture. With 4KB Flash, 128 Bytes RAM, 32 I/O lines, and support for SPI-based in-system programming (ISP), it is ideal for learning, prototyping, and industrial embedded control applications. The DIP-40 package makes it easy to use with breadboards and development kits.
Key Features:
8051 Architecture
Fully compatible with standard 8051 instruction set and peripherals.4KB Flash Memory
On-chip reprogrammable Flash for code storage.32 Programmable I/O Lines
Sufficient for a wide range of interfacing needs.Timers and Serial Communication
Includes two 16-bit timers/counters and a full-duplex UART.In-System Programmable (ISP)
Can be programmed via SPI interface without removing from circuit.Low Power Operation
Built-in power-saving modes for energy-efficient designs.
Applications:
Embedded control and automation
8051 microcontroller training and academic projects
Home and industrial automation
Robotics and mechatronics
DIY electronic circuits
Programmable logic systems
Package Includes:
1 × AT89S51 Microcontroller IC
Specifications:
Architecture: 8051 (8-bit)
Program Memory: 4KB Flash
RAM: 128 Bytes
EEPROM: Not available
I/O Pins: 32
Timers: 2 × 16-bit
Serial Interface: UART
ISP Interface: SPI
Clock Frequency: Up to 33 MHz
Operating Voltage: 4V to 5.5V
Package Type: DIP-40
Mounting Type: Through-hole
Dimensions:
Length: 52 mm
Width: 13 mm
Pin Pitch: 2.54 mm
Weight: 5 g
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