PD64A_15 Datasheet, PDF (48/66 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR INFRARED REMOTE CONTROL TRANSMISSION

µPD64A, 65
STTS #data4
<1> Instruction code: 0 0 0 1 1 1 0 0 0 1
<2> Cycle count:
0 0 0 0 0 0 d3 d2 d1 d0
1
<3> Function:
If statuses match F ← 1
else F ← 0
The S0, S1, KI/O, KI, and TIMER statuses are compared with the immediate data contents. If at least
one of the statuses matches the bits that have been set, status flag F is set (1).
If none of them match, status flag F is cleared (0).
SCAF (Set Carry If ACC = FH)
<1> Instruction code: 1 1 0 1 0 1 0 0 1 1
<2> Cycle count:
1
<3> Function:
If A = 0FH CY ← 1
else CY ← 0
The carry flag CY is set (1) if the accumulator contents are FH.
The accumulator values after executing the SCAF instruction are as follows.
Accumulator Value
Before Execution
After Execution
×××0
0000
××01
0001
×011
0011
0111
0111
1111
1111
Carry Flag
0 (clear)
0 (clear)
0 (clear)
0 (clear)
1 (set)
Remark ×: don’t care
NOP
<1> Instruction code:
<2> Cycle count:
<3> Function:
No operation
0 0 0 0 0 0 0 0 00
1
PC ← PC + 1
46
Data Sheet U14380EJ3V0DS00