4583 Datasheet, PDF (100/153 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4583 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SRST (System ReSeT)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0
0
0
0
0
0
0
0
0
1
0
2
0
1 ₁₆
1
1
–
Skip condition
–
Operation: System reset occurrence
Grouping: Other operation
Description: System reset occurs.
SVDE (Set Voltage Detector Enable flag)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1
0
1
0
0
1
0
0
1
1
2
2
9
3 ₁₆
1
1
–
Skip condition
–
Operation: At RAM back-up: Voltage drop detection circuit is valid.
Grouping: Other operation
Description: Validates the voltage drop detection circuit
at RAM back-up mode when VDCE pin is
“H”.
SZB j (Skip if Zero, Bit)
Instruction D9
code
00001000j
Operation:
(Mj(DP)) = 0 ?
j = 0 to 3
D0
Number of Number of Flag CY
words
cycles
j
0
2
2
j
16
1
1
–
Skip condition
(Mj(DP)) = 0
j = 0 to 3
Grouping: Bit operation
Description: Skips the next instruction when the con-
tents of bit j (bit specified by the value j in
the immediate field) of M(DP) is “0.”
Executes the next instruction when the con-
tents of bit j of M(DP) is “1.”
SZC (Skip if Zero, Carry flag)
Instruction
code
D9
D0
Number of Number of Flag CY
0000101111
02F
words
cycles
2
16
1
1
–
Skip condition
(CY) = 0
Operation: (CY) = 0 ?
Grouping: Arithmetic operation
Description: Skips the next instruction when the con-
tents of carry flag CY is “0.”
After skipping, the CY flag remains un-
changed.
Executes the next instruction when the con-
tents of the CY flag is “1.“
Rev.3.00 Aug 06, 2004 page 100 of 151
REJ03B0009-0300Z