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Can we move data between two registers in 8051?

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Can we move data between two registers in 8051?

These instructions are responsible for moving data from one place to another in the microcontroller….List of data transfer instructions.

Operation Mnemonics Description
Memory to register XCH A, address [A]<-[Address]
Register to memory MOVX @Ri, A [Address]<-[A]
MOV a8, A [Address]<-[A]
MOV a8, Rn [Address]<-[Rn]

Where are the registers R0 R7 located in the 8051?

Register Banks in 8051 The second bank of registers R0–R7 starts at RAM location 08 and goes to locations OFH. The third bank of R0–R7 starts at memory location 10H and goes to location to 17H.

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Which register is not present in 8051?

The point to remember is that no member of the 8051 family can access more than 64K bytes of opcode since the program counter in 8051 is a 16-bit register (0000 to FFFF address)….8051 Flag Bits and PSW Register.

CY PSW.7 Carry Flag
– PSW.1 User definable FLAG

How many registers are used in 8051 for accessing data?

Program Counter and Data Pointer The 8051 contains two 16-bit registers: the program counter (PC) and the data pointer (DPTR). Each is used to hold the address of a byte in memory.

What are the modes involved in the 8051 for moving the data?

In 8051 There are six types of addressing modes.

  • Immediate AddressingMode.
  • Register AddressingMode.
  • Direct AddressingMode.
  • Register IndirectAddressing Mode.
  • Indexed AddressingMode.
  • Implied AddressingMode.

Why do we use stack pointer?

The Stack Pointer (SP) register is used to indicate the location of the last item put onto the stack. When you PUT something ONTO the stack (PUSH onto the stack), the SP is decremented before the item is placed on the stack.

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Which flag is not available in 8051?

Zero flag is present in 8085 but not in the 8051.

Which register of 8051 microcontroller is not a bit addressable register?

PCON register
NOTE: PCON register is not bit addressable. During Idle Mode, the Microcontroller will stop the Clock Signal to the ALU (CPU) but it is given to other peripherals like Timer, Serial, Interrupts, etc.

What are the special purpose registers of 8051?

The Counters and Timers in 8051 microcontrollers contain two special function registers: TMOD (Timer Mode Register) and TCON (Timer Control Register).

What are general purpose registers in 8051?

The 8051 has 4 registers bank . The B0, B1, B2, and B3 stand for banks and each bank contains eight general purpose registers ranging from ‘R0’ to ‘R7’. A register is a storage element that can be store bits of information, A register file is a collection of registers, which are the same length.