4554 Datasheet, PDF (102/138 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4554 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TAW6 (Transfer data to Accumulator from register W6)
Instruction D9
D0
code
1001010000
25
2
0
16
Number of
words
1
Number of Flag CY
cycles
1
–
Skip condition
–
Operation: (A) ← (W6)
Grouping: Timer operation
Description: Transfers the contents of timer control reg-
ister W6 to register A.
TAX (Transfer data to Accumulator from register X)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0
0
0
1
0
1
0
0
1
0
2
0
5
2 ₁₆
1
1
–
Skip condition
–
Operation: (A) ← (X)
Grouping: Register to register transfer
Description: Transfers the contents of register X to reg-
ister A.
TAY (Transfer data to Accumulator from register Y)
Instruction
code
D9
D0
Number of Number of Flag CY
0000011111
01F
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (A) ← (Y)
Grouping: Register to register transfer
Description: Transfers the contents of register Y to regis-
ter A.
TAZ (Transfer data to Accumulator from register Z)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
0 0 0 1 0 1 0 0 1 1 ₂ 0 5 3 ₁₆
1
1
–
Skip condition
–
Operation:
(A1, A0) ← (Z1, Z0)
(A3, A2) ← 0
Grouping: Register to register transfer
Description: Transfers the contents of register Z to the
low-order 2 bits (A1, A0) of register A.
Note:
After this instruction is executed, “0” is
stored to the high-order 2 bits (A3, A2) of
register A.
Rev.3.00 Aug 06, 2004 page 102 of 136
REJ03B0043-0300Z