AT89C2051-24PU 8-bit 8051 Microcontroller – 2KB Flash – PDIP-20 – Microchip

The AT89C2051-24PU from Microchip is a compact, high-performance 8-bit microcontroller based on the industry-standard 8051 architecture. Featuring 2 KB of in-system reprogrammable Flash memory and 128 bytes of internal RAM, it delivers reliable processing performance in a space-efficient 20-pin PDIP through-hole package.

Operating at clock speeds up to 24 MHz, this microcontroller supports a wide 2.7V to 6V operating voltage range, making it suitable for both low-power and standard 5V embedded applications. With 15 programmable I/O lines, it offers ample flexibility for controlling peripherals, sensors, drivers, and general digital interfaces.

Integrated peripherals include two 16-bit timers/counters, a programmable serial UART, an on-chip analog comparator, and six interrupt sources, enabling enhanced control and monitoring capabilities. Support for Idle and Power-down modes helps reduce power consumption in battery-operated or energy-sensitive designs.

Its robust feature set and ease of integration make the AT89C2051-24PU ideal for small embedded systems, industrial controls, automation projects, instrumentation, and educational development.

Key Specifications:

• Manufacturer: Microchip

• Part Number: AT89C2051-24PU

• Architecture: 8-bit 8051 core

• Flash Memory: 2 KB

• RAM: 128 bytes

• Maximum Frequency: 24 MHz

• Operating Voltage: 2.7V to 6V

• I/O Lines: 15 programmable I/Os

• Peripherals:
  – Two 16-bit timers/counters
  – UART serial interface
  – Analog comparator
  – Six interrupt sources

• Power Modes: Idle and Power-down

• Package: PDIP-20 (through-hole)

Package Includes:
1 x AT89C2051-24PU 8-bit Microcontroller

Note: Image is for representation purpose only.