4552 Datasheet, PDF (96/145 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4552 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TABPS (Transfer data to Accumulator and register B from PreScaler)
Instruction
code
D9
D0
Number of
1 0 0 1 1 1 0 1 0 1 ₂ 2 7 5 ₁₆
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(B) ← (TPS7–TPS4)
(A) ← (TPS3–TPS0)
Grouping: Timer operation
Description: Transfers the high-order 4 bits (TPS7–
TPS4) of prescaler to register B, and
transfers the low-order 4 bits (TPS3–TPS0)
of prescaler to register A.
TAD (Transfer data to Accumulator from register D)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0
0
0
1
0
1
0
0
0
1
0
2
5
1 ₁₆
1
1
–
Skip condition
–
Operation:
(A2–A0) ← (DR2–DR0)
(A3) ← 0
Grouping: Register to register transfer
Description: Transfers the contents of register D to the
low-order 3 bits (A2–A0) of register A.
Note:
When this instruction is executed, “0” is
stored to the bit 3 (A3) of register A.
TAI1 (Transfer data to Accumulator from register I1)
Instruction
code
D9
D0
Number of Number of Flag CY
1001010011
253
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (A) ← (I1)
Grouping: Interrupt operation
Description: Transfers the contents of interrupt control
register I1 to register A.
TAK0 (Transfer data to Accumulator from register K0)
Instruction D9
D0
code
1001010110
25
2
6
16
Number of
words
1
Number of Flag CY
cycles
1
–
Skip condition
–
Operation: (A) ← (K0)
Grouping: Input/Output operation
Description: Transfers the contents of key-on wakeup
control register K0 to register A.
Rev.3.02 Dec 22, 2006 page 96 of 142
REJ03B0023-0302