4509 Datasheet, PDF (97/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SZD (Skip if Zero, port D specified by register Y)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0
0
0
0
1
0
0
1
0
0
2
0
2
4 ₁₆
2
2
–
0 0 0 0 1 0 1 0 1 1 ₂ 0 2 B ₁₆
Skip condition
(D(Y)) = 0
(Y) = 0 to 5
Operation:
(D(Y)) = 0 ?
(Y) = 0 to 5
Grouping: Input/Output operation
Description: Skips the next instruction when a bit of port
D specified by register Y is “0.” Executes the
next instruction when the bit is “1.”
Note:
(Y) = 0 to 5.
Do not execute this instruction if values ex-
cept above are set to register Y.
T1AB (Transfer data to timer 1 and register R1L from Accumulator and register B)
Instruction
code
D9
D0
Number of Number of
1
0
0
0
1
1
0
0
0
0
2
2
3
0 ₁₆
words
1
cycles
1
Flag CY
–
Skip condition
–
Operation:
(R1L7–R1L4) ← (B)
(T17–T14) ← (B)
(R1L3–R1L0) ← (A)
(T13–T10) ← (A)
Grouping: Timer operation
Description: Transfers the contents of register B to the
high-order 4 bits of timer 1 and timer 1 re-
load register R1L. Transfers the contents of
register A to the low-order 4 bits of timer 1
and timer 1 reload register R1L.
T1HAB (Transfer data to register R1H from Accumulator and register B)
Instruction
code
D9
D0
Number of
1010010010
292
2
16
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(R1H7–R1H4) ← (B)
(R1H3–R1H0) ← (A)
Grouping: Timer operation
Description: Transfers the contents of register B to the
high-order 4 bits of timer 1 reload register
R1H. Transfers the contents of register A to
the low-order 4 bits of timer 1 reload regis-
ter R1H.
T1R1L (Transfer data to timer 1 from register R1L)
Instruction
code
D9
D0
Number of Number of Flag CY
1010100111
2 A7
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (T17–T10) ← (R1L7–R1L0)
Grouping: Timer operation
Description: Transfers the contents of timer 1 reload
register R1L to timer 1.
Rev.1.02 2006.12.22 page 97 of 140
REJ03B0147-0102