AT89S51 8051 Microcontroller

AT89S51 8051 Microcontroller — 8-Bit ISP MCU 40-Pin

The AT89S51 is a low-power, high-performance CMOS 8-bit microcontroller from Atmel, featuring 4KB of In-System Programmable Flash memory and full compatibility with the industry-standard 80C51 instruction set. Its ISP capability allows reprogramming without removing the chip from the circuit.

Key Features

• 4KB ISP Flash program memory
• 128 bytes internal RAM
• 32 programmable I/O lines
• 2 Timer/Counters (16-bit)
• Full-duplex UART serial port
• 5 interrupt sources
• 80C51 instruction set compatible
• In-System Programming (ISP) via SPI
• 40-pin DIP package
• Low-power idle and power-down modes

Applications

• Embedded control and automation
• Educational 8051 projects
• Industrial monitoring systems
• Consumer electronics