參數(shù)資料
型號: 4571
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機(jī)的CMOS
文件頁數(shù): 112/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 86 of 124
REJ03B0179-0102
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SUPT
(Set UPT flag)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
101
10
01 2 05 9 16
11
-
Opera-
tion:
(UPTF)
1
Grouping:
Other operation
Description: Sets (1) to the high-order bit reference enable flag UPTF.
Note:
When the table reference instruction (TABP p) is executed,
the high-order 2 bits of ROM reference data is transferred
to the low-order 2 bits of register D.
SZB j
(Skip if Zero, Bit)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
010
00
j
2
02
j
16
11
-
(Mj(DP)) = 0
j = 0 to 3
Opera-
tion:
(Mj(DP)) = 0 ?
j = 0 to 3
Grouping:
Bit operation
Description: Skips the next instruction when the contents of bit j (bit
specified by the value j in the immediate field) of M(DP) is
“0”.
Executes the next instruction when the contents of bit j of
M(DP) is “1”.
SZC
(Skip if Zero, Carry flag)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
010
11
11 2 02 F 16
11
-
(CY) = 0
Opera-
tion:
(CY) = 0 ?
Grouping:
Arithmetic operation
Description: Skips the next instruction when the contents of carry flag
CY is “0”.
After skipping, the CY flag remains unchanged.
Executes the next instruction when the contents of the CY
flag is “1”.
SZD
(Skip if Zero, port D specified by register Y)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
010
01
00 2 02 4 16
2
-
(D(Y)) = 0
0
010
10
11 2 02 B 16 Grouping:
Input/Output operation
Description: Skips the next instruction when a bit of port D specified by
register Y is “0”. Executes the next instruction when the bit
is “1”.
Note:
(Y) = 0 to 4.
Do not execute this instruction if values except above are
set to register Y.
Opera-
tion:
(D(Y)) = 0 ?
(Y) = 0 to 4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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