252
CHAPTER 20 STANDBY FUNCTION
(b) Clear upon RESET input
The STOP mode is cleared and after the lapse of oscillation stabilization time, reset operation is carried out.
Figure 20-5. STOP Mode Clear upon RESET Input
STOP instruction
Wait
(2
17
/f
X
: 15.6 ms)
Oscillation stabilization
wait status
Operating mode
STOP mode
Operating mode
Oscillation stop
Clock
RESET
signal
Oscillation
Oscillation
Reset
period
Remarks 1. f
X
: Main system clock oscillation frequency
2. Values in parentheses apply to operation with f
X
= 8.38 MHz.
Table 20-4. Operation after STOP Mode Clear
Clear Source
MK
××
PR
××
IE
ISP
Operation
Maskable interrupt request
0
0
0
×
Next address instruction execution
0
0
1
×
Interrupt service execution
0
1
0
1
Next address instruction execution
0
1
×
0
0
1
1
1
Interrupt service execution
1
×
×
×
STOP mode hold
RESET input
—
—
×
×
Reset processing
×
: don’t care
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