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位微機的CMOS
文件頁數(shù): 104/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 79 of 124
REJ03B0179-0102
4571 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
POF
(Power OFf)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
000
00
10 2 00 2 16
11
-
Opera-
tion:
RAM back-up
Grouping:
Other operation
Description: Puts the system in RAM back-up state by executing the
POF instruction after executing the EPOF instruction.
Note:
If the EPOF instruction is not executed just before this
instruction, this instruction is equivalent to the NOP instruc-
tion.
RAR
(Rotate Accumulator Right)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
001
11
01 2 01 D 16
11
0/1
-
Opera-
tion:
Grouping:
Arithmetic operation
Description: Rotates 1 bit of the contents of register A including the
contents of carry flag CY to the right.
RB j
(Reset Bit)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
100
11
j
2
04
C
+j 16
1
-
Opera-
tion:
(Mj(DP))
0
j = 0 to 3
Grouping:
Bit operation
Description: Clears (0) the contents of bit j (bit specified by the value j in
the immediate field) of M(DP).
RBK
(
Reset BanK flag))
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
0
100
11
00 2 04 0 16
11
-
Opera-
tion:
p6
0 when TABP p instruction is executed.
Grouping:
Other operation
Description: Sets referring data area to pages 0 to 63 when the TABP p
instruction is executed. This instruction is valid only for the
TABP p instruction.
Note:
This instruction cannot be used for the M34571G4/G6.
CY
A3A2A1A0
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