Features of 8051 Microcontroller

In the 1980s, intel created the 8051 microcontrollers. It was created primarily for integrating embedded systems and had a foundation in Harvard architecture. So let us check the features of the microcontroller.

Learn more about the Features of the AVR Microcontroller

The key features of the 8051 microcontroller 

  • 4 KB on-chip ROM(Program Memory)
  • 8 Bit CPU through two resistors A & B.
  • 128  bytes on-chip RAM(data Memory).
  • Addressebal resigister 16 bit.
  • Two 16-bit timers.
  • 1 microsecond instruction cycle with a 12 MHz crystal.
  • Oscillator and CLK circuit.
  • 8051 has two external and three internal interrupts.
  • UARTs, ADC, Op-Amp, and other special function features are specified for the 8051 microcontroller
  • Four 8-bit input/output ports.
  • It has a 16-bit program counter and data pointer.
  • Four resister banks of 8 bit each.
  • Interrupts like external 2 and internal 3.
  • Control resigter like PCON, SCON, TMOD, TCON, IE, and IP.
  • Program counter - 16 bit & DPRT.
  • Serial data Tx and Rx for full duplex operation.
  • Stack pointer - 8-bit and PSW.
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