UPD62A NEC, UPD62A Datasheet - Page 46

• Manufacturer Part Number: UPD62A
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

46
STTS #data4
SCAF (Set Carry If A
NOP
<1> Instruction code:
<2> Cycle count:
<3> Function:
<1> Instruction code:
<2> Cycle count:
<3> Function:
<1> Instruction code:
<2> Cycle count:
<3> Function:
The S
one of the statuses coincides with the bits that have been set, the status flag F is set (to 1).
If none of them coincide, the status flag F is cleared (to 0).
The carry flag CY is set (to 1) if the accumulator contents are F
The accumulator values after executing the SCAF instruction are as follows:
Remark
No operation
0111
1111
Before execution
011
01
0
0
, S
1
, K
Accumulator Value
: don’t care
I/O
CC
, K
:
= F
I
, and TIMER statuses are compared with the immediate data contents. If at least
H
1
if statuses match F
else F
1
if A = 0FH CY
else CY
1
PC
0 0 0 1 1 1 0 0 0 1
0 0 0 0 0 0 d
1 1 0 1 0 1 0 0 1 1
0 0 0 0 0 0 0 0 0 0
)
0000
0001
0011
0111
1111
After execution
PC + 1
0
Data Sheet U14474EJ1V0DS00
0
3
d
2
d
1
d
0
1
0 (clear)
0 (clear)
0 (clear)
0 (clear)
1 (set)
1
Carry Flag
H
.
PD62A