CHAPTER 5 EXPLANATION OF INSTRUCTIONS
91
User's Manual U12326EJ4V0UM
Clear Single Bit (Carry Flag)
CLR1 1 Bit Data Clear
[Instruction format] CLR1 dst
[Operation] dst ← 0
[Operand]
Mnemonic Operand(dst)
CLR1 saddr.bit
sfr.bit
A.bit
PSW.bit
[HL].bit
CY
[Flag]
dst = PSW.bit dst = CY In all other cases
Z AC CY Z AC CY Z AC CY
××× 0
[Description]
• The destination operand (dst) is cleared (0).
• When the destination operand (dst) is CY or PSW.bit, only the corresponding flag is cleared (0).
[Description example]
CLR1 P3.7; Bit 7 of port 3 is cleared (0).