What are features of microcontroller?
A micro-controller is a single integrated circuit, commonly with the following features: central processing unit – ranging from small and simple 4-bit processors to complex 32-bit or 64-bit processors. volatile memory (RAM) for data storage. ROM, EPROM, EEPROM or Flash memory for program and operating parameter storage.
What is the application of 8051?
Application of Microcontroller 8051. The use of microcontrollers in various fields such as automobile, aeronautics, space, robotics, electronics, defense application, mobile communications, rail transport, industrial processing, and medical applications is rapidly increasing.
Why should we select 8051 microcontroller features and advantages?
Automobiles: The microcontroller 8051 discovers broad recognition in supplying automobile solutions. They are extensively utilized in hybrid motor vehicles to control engine variations. Also, works such as cruise power and anti-brake mechanism have created it more capable with the amalgamation of micro-controllers.
Which of the following is feature of 8051 microcontroller?
8051 Microcontroller Features 8 – Bit Accumulator:The Accumulator is an important register associated with the ALU. The accumulator in 8051 is an 8 – bit register. RAM: 8051 Microcontroller has 128 Bytes of RAM which includes SFRs and Input / Output Port Registers. ROM: 8051 has 4 KB of on-chip ROM (Program Memory).
What are the advantages of 8051 microcontroller?
i )Low time required for performing operation. ii)The processor chips are very small and flexibility occurs. iii)Due to their higher integration, cost and size of the system is reduced. iv)The microcontroller is easily to interface additional RAM, ROM and I/O ports.
Which of the following is features of 8051 micro controller?
How many oscillators are used in 8051?
The 8051 has On-Chip crystal oscillator of 12MHz. We can drive 8051 also using the external clock sources. So to use external clock sources, there are XTAL1 and XTAL2 pins in the microcontroller. 8051 has four 8-bit IOports called Port0, Port1, Port2 and Port3.
What is memory type for 8051?
The 8051 has three very general types of memory. To effectively program the 8051 it is necessary to have a basic understanding of these memory types. The memory types are illustrated in the following graphic. They are: On-Chip Memory, External Code Memory, and External RAM.
How many registers are there in 8051?
The 8051 has 4 selectable banks of 8 addressable 8-bit registers, R0 to R7. This means that there are essentially 32 available general purpose registers, although only 8 (one bank) can be directly accessed at a time.
What is the operating frequency of 8051?
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 accumulator does 8051 has?
The most widely used registers of the 8051 are A (accumulator), B, R0-R7, DPTR (data pointer), and PC (program counter). All these registers are of 8-bits, except DPTR and PC….8051 Flag Bits and PSW Register.
| CY | PSW.7 | Carry Flag |
|---|---|---|
| RS0 | PSW.3 | Register Bank selector bit 0 |
| OV | PSW.2 | Overflow Flag |
| – | PSW.1 | User definable FLAG |
What is the capacity of an 8051?
256 Bytes
In extended 8051 variants, program memory can have a size of up to 16MB called ECODE and HCONST. 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.
What is the 8051 microcontroller?
Intel Corporation is the first company who presented 8051 microcontroller in the market. It is an 8-bit microcontroller. It has on-chip 128 bytes of RAM, 4K bytes ROM, two timers, one serial port, and four general-purpose input/output ports.
What is the memory address space of 8051?
8051 has separate Data memory and separate program memory spaces. The program memory is basically 4KBof on-chip EPROM (address space 0000H to 0FFFH), and 128 bytes of RAM (address space 00H to 7FH) There is total 64KB of program memory address space including the on-chip 4KB space.
What is the difference between 8051 and 8031?
8031 microcontroller − It is another member of the 8051 family. This chip is often referred to as a ROM-less 8051, since it has 0K byte of on-chip ROM. You must add external ROM to it in order to use it, which contains the program to be fetched and executed.
What are the characteristics of 8051 interrupt?
The characteristic of 8051 Interrupt is extremely constructive as it aids in emergency cases. Interrupts provide us a method to postpone or delay the current process, carry out a sub-routine task and then all over again restart standard program implementation.