NEC uPD78056Y User Manual
Page 532
532
CHAPTER 23 STANDBY FUNCTION
RESET
Signal
Operating
Mode
Clock
Reset
Period
STOP Mode
Oscillation Stop
Oscillation
Stabilization
Wait Status
Operating
Mode
Oscillation
Wait
(2
17
/f
x
: 26.2 ms)
STOP
Instruction
Oscillation
(c) Release by RESET input
When a RESET signal is input, the STOP mode is released. And after the lapse of oscillation stabilization
time, reset operation is carried out.
Figure 23-5. Release by STOP Mode RESET Input
Remarks 1. f
X
: main system clock oscillation frequency
2. ( ): f
X
: 5.0 MHz
Table 23-4. Operation after STOP Mode Release
Release 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
Ч
Ч
Ч
STOP mode hold
Test input
0
–
Ч
Ч
Next address instruction execution
1
–
Ч
Ч
STOP mode hold
RESET input
–
–
Ч
Ч
Reset processing
Remark
×
: Don't care