Intel 8051 microcontroller

The Intel MCS-51, also known as the 8051, is an 8-bit microcontroller developed in 1980 by Intel.

Derivatives of the 8051 are still widely used today.

• Capable of addressing 64 kilobits of program memory and 64 kilobits of data memory
• 4 kilobits of on-chip ROM
• 128 bytes of on-chip RAM
• Special function registers (SFR) - control/monitor various aspects of 8051's functions
• 2 timers/counters
• Serial/UART
• 4 GPIO 8-bit ports
• Interrupt logic with 5 interrupt sources

• 8051 memory access
• UART on the 8051
• 8051_assembly
• Interrupts on the 8051
• I/O on the 8051

• Programming and Interfacing the 8051 Microcontroller in C and Assembly, Sencer Yeralan