8051 Set Bit

Set Bit

SETB sets the indicated bit to one. SETB can operate on the carry flag or any directly addressable bit. No other flags are affected.

SETB C
Encoding: 1 1 0 1 0 0 1 1

SETB bit
Encoding: 1 1 0 1 0 0 1 0 bit address

The carry flag is cleared. Output Port 1 has been written with the value 34H (00110100B). The following instructions,

SETB C
SETB P1.0

sets the carry flag to 1 and changes the data output on Port 1 to 35H (00110101B).

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Related topics:
8051 Complement Accumulator and Bit   |   8051 Clear Accumulator and Bit   |   8051 Rotate Accumulator   |   8051 Swap Nibble   |   8051 Exchange Accumulator   |   8051 Exchange Digit   |   8051 Push and Pop   |   8051 No Operation

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List of topics: 8051

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