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8051 Instruction Set Manual

CLR

The CLR instruction sets the specified destination operand to a value of 0.

See Also: SETB

CLR A
C AC F0 RS1 RS0 OV   P
Bytes 1
Cycles 1
Encoding
11100100
Operation 
CLR
A = 0
Example 
CLR A
CLR bit
C AC F0 RS1 RS0 OV   P
Bytes 2
Cycles 1
Encoding
11000010 bit
Operation 
CLR
(bit)  = 0
Example 
CLR 01h
CLR C
C AC F0 RS1 RS0 OV   P
Bytes 1
Cycles 1
Encoding
11000011
Operation 
CLR
C = 0
Example 
CLR C

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