Microchip AT89C4051-24PU, 8bit 8051 Microcontroller, AT89, 24MHz, 4 kB Flash, 20-Pin PDIP

Atmel offers 8051 reprogrammable flash microcontrollers with programmable and erasable read-only memory, using high-density non-volatile memory technology.

8051 Architecture Microcontrollers

Atmel's 8-bit microcontrollers (MCUs) based on the 8051 instruction set, combine proven technology with the latest features and functionality, with all featuring advanced flash memory.

Device Family

Single Cycle Core
Flash ISP (In-System Programmable)
Flash (Reprogrammable)
CAN Networking MCUs
USB MCUs
ROMless