參數(shù)資料
型號: HD404654S
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer
中文描述: 4位單片機
文件頁數(shù): 9/109頁
文件大小: 430K
代理商: HD404654S
HD404654 Series
9
0
1
2
3
Bit 3
Bit 2
Bit 1
Bit 0
IMTA
(IM of timer A)
IFTA
(IF of timer A)
IM1
(IM of
INT
1
)
IF1
(IF of
INT
1
)
IMTC
(IM of timer C)
IFTC
(IF of timer C)
IMS1
(IM of serial
interface 1)
IFS1
(IF of serial
interface 1)
IMTD
(IM of timer D)
IFTD
(IF of timer D)
$000
$001
$002
$003
Interrupt control bits area
IM0
(IM of
INT
0
)
IF0
(IF of
INT
0
)
RSP
(Reset SP bit)
IE
(Interrupt
enable flag)
32
33
ICSF
(Input capture
status flag)
$020
$021
Register flag area
WDON
(Watchdog
on flag)
ICEF
(Input capture
error flag)
RAME
(RAM enable
flag)
Not used
IF:
IM:
IE:
SP:
Interrupt request flag
Interrupt mask
Interrupt enable flag
Stack pointer
Bit 3
Bit 2
Bit 1
Bit 0
Not used
Not used
Not used
Not used
Not used
Figure 3 Configuration of Interrupt Control Bits and Register Flag Areas
IE
IM
IF
ICSF
ICEF
RAME
RSP
WDON
Not used
SEM/SEMD
REM/REMD
TM/TMD
Allowed
Allowed
Allowed
Not executed
Allowed
Allowed
Not executed
Allowed
Not executed
Allowed
Not executed
Not executed
Inhibited
Inhibited
Inhibited
Note: WDON is reset by MCU reset or by
STOPC
enable for stop mode cancellation.
If the TM or TDM instruction is executed for the inhibited bits or non-existing bits,
the value in ST becomes invalid.
Figure 4 Usage Limitations of RAM Bit Manipulation Instructions
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