參數(shù)資料
型號: HD40L4818
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 29/98頁
文件大?。?/td> 621K
代理商: HD40L4818
HD404818 Series
29
the next instruction after the SBY instruction. If the interrupt enable flag is 1, that interrupt is then
processed; if it is 0, the interrupt request is left pending and normal instruction execution continues. A
flowchart of operation in standby mode is shown in figure 10.
Standby
Oscillator: Active
Peripheral clocks:
Active
All other clocks:
Stop
RESET
= 1
No
Yes
IF0 =
1
No
Yes
IM0 =
0
IF1 =
1
No
Yes
IM1 =
0
IFTA =
1
No
Yes
IMTA =
0
IFTB =
1
No
Yes
IMTB =
0
IFTC =
1
No
Yes
IMTC =
0
IFS =
1
No
Yes
IMS =
0
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
(SBY only)
(SBY only)
(SBY only)
Watch
Oscillator: Stop
Suboscillator: Active
Peripheral clocks: Stop
All other clocks: Stop
Restart
processor clocks
Reset MCU
Execute
next instruction
Accept interrupt
Execute
next instruction
(active mode)
Restart
processor clocks
No
Yes
IF = 1,
IM = 0, and
IE = 1
(SBY only)
Figure 10 MCU Operating Flowchart of Watch and Standby Modes
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