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MICROCONTROLLER TUTORIALS - 8052

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8051

Introduction

Chapter 1
Types of Memory

Chapter 2
Special Function Registers

Chapter 3
Basic Registers

Chapter 4
Addressing Modes

Chapter 5
Program Flow

Chapter 6
Low Level Information

Chapter 7
Timers

Chapter 8
Serial Port Operations

Chapter 9
Interrupts

Additional Features in 8052

8052 Instruction Set

8051 / 8052 Microcontroller
Instruction Set 
CLR - Clear Register

Operation: CLR
Function: Clear Register
Syntax: CLR register

 

Instructions OpCode Bytes Cycles Flags
CLR bit addr 0xC2 2 1 None
CLR C 0xC3 1 1 C
CLR A 0xE4 1 1 None

 

Description: CLR clears (sets to 0) all the bit(s) of the indicated register. If the register is a bit (including the carry bit), only the specified bit is affected. Clearing the Accumulator sets the Accumulator’s value to 0.

See Also: SETB, Instruction Set

 
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