Table of Contents
- 1 Is accumulator a general purpose register in 8051?
- 2 Which of the following registers in 8051 are bit addressable?
- 3 Which register is similar to accumulator in 8051?
- 4 Which of the following register is not bit addressable?
- 5 What is the difference between bit addressable and byte-addressable register in 8051 microcontroller?
- 6 Is the accumulator a bit or byte addressable register?
- 7 What is the 8051 microcontroller SFR accumulator?
Is accumulator a general purpose register in 8051?
8051 Registers The part of memory which is used for general purpose is called as RAM, and the memory used for Special Function Register (SFR) contains all the peripheral related registers like Accumulator, ‘B’ register, Timers or Counters, and interrupt related registers.
Which of the following registers in 8051 are bit addressable?
Which of the following is bit-addressable register? Explanation: The registers, accumulator, PSW, B, P0, P1, P2, P3, IP, IE, TCON and SCON are all bit-addressable registers. Explanation: The registers, DPH and DPL are the higher and lower bytes of a 16-bit register DPTR.
Which register is similar to accumulator in 8051?
The “B” register is very similar to the Accumulator in the sense that it may hold an 8-bit (1-byte) value. The “B” register is used only by two 8051 instructions: MUL AB and DIV AB.
Is accumulator bit addressable?
The accumulator, B register, Po, P1, P2, P3, IE registers are bit-addressable register remaining all are byte-addressable registers. The accumulator which is also known as ACC or A is a bit as well as a byte-addressable register by an address of the accumulator.
Which register is not bit addressable?
Embedded Systems – SFR Registers
| Byte Address | Bit Address | |
|---|---|---|
| 8C | Not bit Addressable | TH0 |
| 8B | Not bit Addressable | TL1 |
| 8A | Not bit Addressable | TL0 |
| 89 | Not bit Addressable | TMOD |
Which of the following register is not bit addressable?
PCON register
Which of the following registers are not bit addressable? Explanation: PCON register is not a bit addressable register.
What is the difference between bit addressable and byte-addressable register in 8051 microcontroller?
In Byte addressable we can only access the data by byte by byte i.e whole bunch of 8 bits. but in bit addressable addresses we can access or manipulate each bit individually. In 8051 memory map, 4 register banks RB0,RB1,RB2 and RB3(each contains 8 registers of 8 bit R0,R1,R2…….
Is the accumulator a bit or byte addressable register?
The accumulator which is also known as ACC or A is a bit as well as a byte-addressable register by an address of the accumulator. If you want to use a bit-addressable register, you can use a single bit (E0) of the register and you can use an 8-bit of the accumulator as a byte-addressable register.
What is an example of an 8051 accumulator?
More than half of the 8051s 255 instructions manipulate or use the accumulator in some way. For example, if you want to add the number 10 and 20, the resulting 30 will be stored in the Accumulator. Once you have a value in the Accumulator you may continue processing the value or you may store it in another register or in memory.
How many instructions are in a 8051 Register?
It can hold an 8-bit (1-byte) value and is the most versatile register the 8051 has due to the shear number of instructions that make use of the accumulator. More than half of the 8051s 255 instructions manipulate or use the accumulator in some way.
What is the 8051 microcontroller SFR accumulator?
The Accumulator or Register A is the most important and most used 8051 Microcontroller SFRs. The Register A is located at the address E0H in the SFR memory space. The Accumulator is used to hold the data for almost all the ALU Operations. Some of the operations where the Accumulator is used are: