What are the essential parts of 8051 microcontroller?

An 8051 microcontroller has the following 12 major components:

• ALU (Arithmetic and Logic Unit)
• PC (Program Counter)
• Registers.
• Timers and counters.
• Internal RAM and ROM.
• Four general purpose parallel input/output ports.
• Interrupt control logic with five sources of interrupt.
• Serial date communication.

What is the pin package and processor of an 8051 microcontroller?

The 8051 microcontroller is of 40 pin package as a 8bit processor.

Which pin is marked as the master reset RST function in microcontroller IC 8051?

Pin 9
Pin 9 (RST): Pin 9 is the Reset Input Pin. It is an active HIGH Pin i.e. if the RST Pin is HIGH for a minimum of two machine cycles, the microcontroller will be reset.

What are the pins of serial port in 8051?

Using the Serial Port: 8051 provides a transmit channel and a receive channel of serial communication. The transmit data pin (TXD) is specified at P3. 1, and the receive data pin (RXD) is at P3. 0.

What is meant by 8051 Microcontroller?

8051 microcontroller is an 8-bit microcontroller created in 1981 by Intel Corporation. It has an 8-bit processor that simply means that it operates on 8-bit data at a time. It is among the most popular and commonly used microcontroller.

What are the salient features of 8051 Microcontroller?

Features of 8051 Microcontroller

• 4KB bytes on-chip program memory (ROM)
• 128 bytes on-chip data memory (RAM)
• Four register banks.
• 128 user defined software flags.
• 8-bit bidirectional data bus.
• 16-bit unidirectional address bus.
• 32 general purpose registers each of 8-bit.
• 16 bit Timers (usually 2, but may have more or less)

How do microcontroller pins work?

Microcontroller pins can be used as inputs to sense conditions in the outside world. Digital I/O pins can only detect ON or OFF (1 or 0) states. A high voltage (near Vcc) will read as a logical 1, and a low voltage (near 0V or Ground) will read as a logical 0.