參數(shù)資料
型號(hào): HD4074849FS
廠商: Hitachi,Ltd.
英文描述: CONTACT
中文描述: 4位單片機(jī)
文件頁數(shù): 38/125頁
文件大?。?/td> 471K
代理商: HD4074849FS
HD404849 Series
38
Low-power mode
operation cycle
IF = 1 and
IM = 0
Hardware NOP
execution
PC Next
Iocation
MCU operation
cycle
Standby/watch
mode
IF = 1 and
IM = 0
Hardware NOP
execution
PC Next
Iocation
Instruction
execution
Stop mode
No
Yes
No
Yes
For IF and IM operation, refer to figure 15.
STOPC
= 0
RAME = 1
Reset MCU
No
Yes
Figure 22 MCU Operating Sequence (Low-Power Mode Operation)
Notes on Use:
When the MCU is in watch mode or subactive mode, if the high level period before the falling edge of
INT
0
is shorter than the interrupt frame,
INT
0
will not be detected. Also, if the low level period after the
falling edge of
INT
0
is shorter than the interrupt frame,
INT
0
will not be detected.
Edge detection is shown in figure 23. The level of the
INT
0
signal is sampled by a sampling clock.
When this sampled value changes from high to low, a falling edge is detected.
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