AT89C4051-24PU Microcontroller 8051 – 20-Pin 4KB Flash 8-Bit MCU DIP in Pakistan

Overview 

The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcontroller featuring 4K bytes of flash programmable and erasable read-only memory. Retaining the streamlined 20-pin dual in-line package (DIP) of the 2051 series, it doubles the available program memory space while maintaining full software and instruction set compatibility with standard 8051 architecture. This makes it ideal for standalone control applications, smart sensor modules, and hardware projects where space is strictly limited.

Key Features 

• Double the Flash Memory: Offers 4KB of onboard non-volatile Flash program memory, allowing for larger, more feature-rich embedded applications.

• Compact 20-Pin Form Factor: Delivers robust 8051 processing power in a slim DIP-20 layout that fits standard sockets and tight breadboards.

• On-Chip RAM & I/O: 128 bytes of internal data RAM alongside 15 programmable digital I/O lines.

• Analog Comparator Integration: Built-in precision analog comparator for threshold sensing without external components.

• Full-Duplex UART: Dedicated serial communication port for easy integration with PCs, displays, and wireless transceivers.

Technical Specifications