upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 416

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

14.2.2 STOP mode
(1) STOP mode setting and operating statuses
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The STOP mode is set by executing the STOP instruction, and it can be set only when the CPU clock before the
setting was the main system clock.
Caution Because the interrupt request signal is used to clear the standby mode, if there is an interrupt
The operating statuses in the STOP mode are shown below.
source with the interrupt request flag set and the interrupt mask flag reset, the standby mode is
immediately cleared if set. Thus, the STOP mode is reset to the HALT mode immediately after
execution of the STOP instruction and the system returns to the operating mode as soon as the
wait time set using the oscillation stabilization time select register (OSTS) has elapsed.
×: don’t care
Maskable interrupt
request
Reset
Table 14-2. Operation in Response to Interrupt Request in HALT Mode
Release Source
CHAPTER 14 STANDBY FUNCTION
Preliminary User’s Manual U19014EJ1V0UD
MK××
0
0
0
0
0
1
−
PR××
0
0
1
1
1
×
−
IE
0
1
0
×
1
×
×
ISP
×
×
1
0
1
×
×
Next address
instruction execution
Interrupt servicing
execution
Next address
instruction execution
Interrupt servicing
execution
HALT mode held
Reset processing
Operation