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4509 Datasheet, PDF (98/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
4509 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
T2AB (Transfer data to timer 2 and register R2L from Accumulator and register B)
Instruction
code
D9
D0
Number of Number of
1
0
0
0
1
1
0
0
0
1
2
2
3
1 16
words
1
cycles
1
Flag CY
–
Skip condition
–
Operation:
(R2L7–R2L4) ← (B)
(T27–T24) ← (B)
(R2L3–R2L0) ← (A)
(T23–T20) ← (A)
Grouping: Timer operation
Description: Transfers the contents of register B to the
high-order 4 bits of timer 2 and timer 2 re-
load register R2L. Transfers the contents of
register A to the low-order 4 bits of timer 2
and timer 2 reload register R2L.
T2HAB (Transfer data to register R2H from Accumulator and register B)
Instruction
code
D9
D0
Number of
1
0
1
0
0
1
0
1
0
0
2
2
9
4 16
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(R2H7–R2H4) ← (B)
(R2H3–R2H0) ← (A)
Grouping: Timer operation
Description: Transfers the contents of register B to the
high-order 4 bits of timer 2 reload register
R2H. Transfers the contents of register A to
the low-order 4 bits of timer 2 reload regis-
ter R2H.
T2R2L (Transfer data to timer 2 from register R2L)
Instruction
code
D9
D0
Number of Number of Flag CY
1010010101
295
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (T27–T20) ← (R2L7–R2L0)
Grouping: Timer operation
Description: Transfers the contents of timer 2 reload
register R2L to timer 2.
TAB (Transfer data to Accumulator from register B)
Instruction
code
D9
D0
Number of Number of Flag CY
0000011110
01E
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (A) ← (B)
Grouping: Register to register transfer
Description: Transfers the contents of register B to reg-
ister A.
Rev.1.02 2006.12.22 page 98 of 140
REJ03B0147-0102