What is the architecture of 8051 microcontroller?

What is the architecture of 8051 microcontroller?

8051 microcontroller is designed by Intel in 1981. It is an 8-bit microcontroller. It is built with 40 pins DIP (dual inline package), 4kb of ROM storage and 128 bytes of RAM storage, 2 16-bit timers. It consists of are four parallel 8-bit ports, which are programmable as well as addressable as per the requirement.

What is the architecture of microcontroller?

All MCs use one of two basic design models: Harvard Architecture and von-Neumann architecture. They represent two different ways of exchanging data between CPU and memory. MCs with Harvard architecture are called “RISC MCs”. MCs with von- Neumann’s architecture are called ‘CISC microcontrollers’.

What are major features of 8051?

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 many counters are there in 8051 internal architecture?

The 8051 has two counters/timers which can be used either as timer to generate a time delay or as counter to count events happening outside the microcontroller.

How many pins are there in 8051 microcontroller?

8051 microcontroller is a 40 pin Dual Inline Package (DIP). These 40 pins serve different functions like read, write, I/O operations, interrupts etc. 8051 has four I/O ports wherein each port has 8 pins which can be configured as input or output depending upon the logic state of the pins.

What is the most common architecture of the microcontroller?

Microcontroller Architecture The most popular 8051 Microcontroller is designed using Harvard Architecture and hence this type of Architecture has been considered here to explain its components.

What is the frequency of 8051 microcontroller?

The original Intel 8051 ran at 12 clock cycles per machine cycle, and most instructions executed in one or two machine cycles. A typical maximum clock frequency of 12 MHz meant these old 8051s could execute one million single-cycle instructions, or 500,000 two-cycle instructions, per second.

How many buses are there in 8051?

Data bus: 8051 microcontroller is consisting of 8 bits data bus. It is generally be used for transferring the data from one peripherals position to other peripherals.

How many pins does 8051 have?

8051 microcontrollers have 4 I/O ports each of 8-bit, which can be configured as input or output. Hence, total 32 input/output pins allow the microcontroller to be connected with the peripheral devices.

How many resistors are there in 8051?

Generally, a 1KΩ Resistor Pack of 8 Resistors is used as a Pull – up for the PORT 0 of the 8051 Microcontroller. In this tutorial, we have seen about the 8051 Microcontroller Pin Diagram, Pin Description and the Basic Circuit of 8051 Microcontroller.

What are the 3 components of a microcontroller?

From the above image, you can understand that the three important (or major) components of a Microcontroller are:

• The CPU (Central Processing Unit)
• The Memory and.
• The I/O Ports.

How many ports are there in 8051?

4 I/O ports
8051 microcontrollers have 4 I/O ports each of 8-bit, which can be configured as input or output. Hence, total 32 input/output pins allow the microcontroller to be connected with the peripheral devices.

What is the size of RAM in 8051?

Internal Data Memory: in the classic 8051, this is the on-chip RAM space with a maximum of 256 Bytes containing register banks, BIT space, direct addressable DATA space, and indirect addressable IDATA space.