NEC PD78F9488 User Manual
Page 314
CHAPTER 17 STANDBY FUNCTION
314
User’s Manual U15331EJ4V1UD
(b) Release by RESET input
When the STOP mode is released by the RESET signal, the reset operation is performed after the
oscillation stabilization time has elapsed.
Figure 17-5. Releasing STOP Mode by RESET Input
STOP
instruction
RESET
signal
Wait
(2
15
/f
X
: 6.55 ms)
STOP mode
Operation
mode
Oscillation
stabilization
wait status
Clock
Operation
mode
Oscillation
stops
Oscillation
Oscillation
Reset
period
Remark f
X
: Main system clock oscillation frequency
Table 17-4. Operation After Releasing STOP Mode
Releasing Source
MKxx
IE
Operation
0
0
Executes next address instruction
0
1
Executes interrupt servicing
Maskable interrupt request
1
x
Retains STOP mode
RESET input
−
-
−
-
Reset
processing
x: don’t care