參數(shù)資料
型號: HD4074318H
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer
中文描述: 4位HMCS400系列微機
文件頁數(shù): 19/66頁
文件大?。?/td> 305K
代理商: HD4074318H
HD404318 Series
19
Reset by
RESET
input or
by watchdog timer
Standby mode
Stop mode
SBY
instruction
Interrupt
Active
mode
RESET 1
RESET 2
RAME = 0
RAME = 1
STOP
instruction
STOPC
Oscillate
Stop
f
cyc
f
OSC
:
CPU
:
PER
:
Oscillate
f
cyc
f
cyc
f
OSC
:
CPU
:
PER
:
Stop
Stop
Stop
f
OSC
:
CPU
:
PER
:
Main oscillation frequency
f
OSC
/4
System clock
Clock for other peripheral
functions
f
OSC
:
f
cyc
:
CPU
:
PER
:
Figure 11 MCU Status Transitions
In stop mode, the system oscillator is stopped. To ensure a proper oscillation stabilization period of at least
t
RC
when clearing stop mode, execute the cancellation according to the timing chart in figure12.
Stop mode
Oscillator
Internal
clock
STOP instruction execution
t
res
t
RC
(stabilization period)
t
res
RESET
or
STOPC
Figure 12 Timing of Stop Mode Cancellation
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