4501_M Datasheet, PDF (91/212 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4501 Group
HARDWARE
INSTRUCTIONS
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
TAD (Transfer data to Accumulator from register D)
Instruction
code
D9
D0
Number of Number of Flag CY
0001010001
051
words
cycles
2
16
1
1
–
Skip condition
–
Operation:
(A2–A0) ← (DR2–DR0)
(A3) ← 0
Grouping:
Description:
Note:
Register to register transfer
Transfers the contents of register D to the
low-order 3 bits (A2–A0) of register A.
When this instruction is executed, “0” is
stored to the bit 3 (A3) of register A.
TADAB (Transfer data to register AD from Accumulator from register B)
Instruction
code
D9
D0
Number of
1000111001
239
2
16
words
1
Number of
cycles
1
Flag CY
–
Skip condition
–
Operation:
(AD7–AD4) ← (B)
(AD3–AD0) ← (A)
Grouping: A/D conversion operation
Description: In the A/D conversion mode (Q13 = 0), this in-
struction is equivalent to the NOP instruction.
In the comparator mode (Q13 = 1), trans-
fers the contents of register B to the
high-order 4 bits (AD7–AD4) of comparator
register, and the contents of register A to
the low-order 4 bits (AD3–AD0) of compara-
tor register.
(Q13 = bit 3 of A/D control register Q1)
TAI1 (Transfer data to Accumulator from register I1)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1
0
0
1
0
1
0
0
1
1
2
2
5
3 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.2.01 Feb 07, 2005
REJ09B0192-0201
1-79