M34282E2GP MITSUBISHI [Mitsubishi Electric Semiconductor], M34282E2GP Datasheet - Page 43

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M34282E2GP

Manufacturer Part Number
M34282E2GP
Description
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheets

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Operation:
Operation:
Operation:
Operation:
XAMD j (eXchange Accumulator and Memory data and Decrement register Y and skip)
XAMI j (eXchange Accumulator and Memory data and Increment register Y and skip)
WRST (Watchdog timer ReSeT)
XAM j (eXchange Accumulator and Memory data)
Instrunction
code
Instrunction
code
Instrunction
code
Instrunction
code
(WDF1)
(A)
(X)
j = 0 to 3
(Y)
(A)
(X)
j = 0 to 3
(Y)
(A)
(X)
j = 0 to 3
D
D
D
D
0
0
0
0
8
8
8
8
0
0
0
0
(X)EXOR(j)
(Y) – 1
(X)EXOR(j)
(Y) + 1
(X)EXOR(j)
(M(DP))
(M(DP))
(M(DP))
1
1
0
1
0
1
1
0
1
0
0
0
0
1
1
1
0
0
1
1
0
j
j
1
j
1
1
1
D
D
D
D
j
j
1
j
0
0
0
0
0
0
0
2
2
2
2
0
0
0
0
6
6
0
6
+j
C
+j
8
F
j
16
16
16
16
Grouping:
Description: After exchanging the contents of M(DP)
Grouping:
Description: After exchanging the contents of M(DP)
Grouping:
Description: Initializes the watchdog timer flag (WDF1).
Grouping:
Description: After exchanging the contents of M(DP)
Number of
Number of
Number of
Number of
words
words
words
words
1
1
1
1
Number of
Number of
Number of
Number of
RAM to register transfer
with the contents of register A, an exclusive
OR operation is performed between regis-
ter X and the value j in the immediate field,
and stores the result in register X.
Subtracts 1 from the contents of register Y.
As a result of subtraction, when the con-
tents of register Y is 15, the next instruction
is skipped.
RAM to register transfer
with the contents of register A, an exclusive
OR operation is performed between regis-
ter X and the value j in the immediate field,
and stores the result in register X.
Adds 1 to the contents of register Y. As a re-
sult of addition, when the contents of
register Y is 0, the next instruction is
skipped.
Other operation
RAM to register transfer
with the contents of register A, an exclusive
OR operation is performed between regis-
ter X and the value j in the immediate field,
and stores the result in register X.
MITSUBISHI MICROCOMPUTERS
cycles
cycles
cycles
cycles
1
1
1
1
Flag CY
Flag CY
Flag CY
Flag CY
4282 Group
Skip condition
Skip condition
Skip condition
Skip condition
(Y) = 15
(Y) = 0
43

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