參數(shù)資料
型號： M34571G6FP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO24
封裝： 5.30 X 10.10 MM, 0.80 MM PITCH, PLASTIC, SSOP-24
文件頁數(shù)： 5/126頁
文件大小： 1776K
代理商： M34571G6FP
Rev.1.02
May 25, 2007
Page 102 of 124
REJ03B0179-0102
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
WRST
(Watchdog timer ReSeT)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
0
1
010
00
00 2 2A0 16
11
-
(WDF1) = 1
Opera-
tion:
(WDF1) = 1 ?
(WDF1)
← 0
Grouping:
Other operation
Description: Clears (0) to the WDF1 flag and skips the next instruction
when watchdog timer flag WDF1 is “1”. When the WDF1
flag is “0”, executes the next instruction. Also, stops the
watchdog timer function when executing the WRST
instruction immediately after the DWDT instruction.
XAM j
(eXchange Accumulator and Memory data)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
10
11
0
1
j
2
2D
j
16
11
-
Opera-
tion:
(A)
← → (M(DP))
(X)
← (X)EXOR(j)
j = 0 to 15
Grouping:
RAM to register transfer
Description: After exchanging the contents of M(DP) with the contents
of register A, an exclusive OR operation is performed
between register X and the value j in the immediate field,
and stores the result in register X.
XAMD j
(eXchange Accumulator and Memory data and Decrement register Y and skip)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
10
11
1
j
2
2F
j
16
11
-
(Y) = 15
Opera-
tion:
(A)
← → (M(DP))
(X)
← (X)EXOR(j)
j = 0 to 15
(Y)
← (Y) 1
Grouping:
RAM to register transfer
Description: After exchanging the contents of M(DP) with the contents
of register A, an exclusive OR operation is performed
between register 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 contents of register Y
is 15, the next instruction is skipped. When the contents of
register Y is not 15, the next instruction is executed.
XAMI j
(eXchange Accumulator and Memory data and Increment register Y and skip)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
10
11
1
0
j
2
2E
j
16
11
-
(Y) = 0
Opera-
tion:
(A)
← → (M(DP))
(X)
← (X)EXOR(j)
j = 0 to 15
(Y)
← (Y) + 1
Grouping:
RAM to register transfer
Description: After exchanging the contents of M(DP) with the contents
of register A, an exclusive OR operation is performed
between register 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 result of addition,
when the contents of register Y is 0, the next instruction is
skipped. When the contents of register Y is not 0, the next
instruction is executed.
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