upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 418

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

Cautions 1. To use the peripheral hardware that stops operation in the STOP mode, and the peripheral
(2) STOP mode release
High-speed system
clock (X1 oscillation)
Internal high-speed
oscillation clock
High-speed system
clock (X1 oscillation)
is selected as CPU
clock when STOP
instruction is executed
Internal high-speed
oscillation clock is
selected as CPU clock
when STOP instruction
is executed
418
Note When AMPH = 1
The STOP mode can be released by the following two sources.
2. Even if “internal low-speed oscillator can be stopped by software” is selected by the option
3. If the STOP instruction is executed with AMPH set to 1 when the internal high-speed oscillation
hardware for which the clock that stops oscillating in the STOP mode after the STOP mode is
released, restart the peripheral hardware.
byte, the internal low-speed oscillation clock continues in the STOP mode in the status before
the STOP mode is set. To stop the internal low-speed oscillator’s oscillation in the STOP mode,
stop it by software and then execute the STOP instruction.
clock or external main system clock is used as the CPU clock, the internal high-speed
oscillation clock or external main system clock is supplied to the CPU 5
mode has been released.
STOP mode
STOP mode release
Figure 14-5. Operation Timing When STOP Mode Is Released
Wait for oscillation
5 s (TYP.)
(oscillation stabilization time set by OSTS)
stabilization
µ
accuracy
CHAPTER 14 STANDBY FUNCTION
Preliminary User’s Manual U19014EJ1V0UD
Note
HALT status
Internal high-speed
oscillation clock
Automatic selection
Clock switched
by software
High-speed system clock
High-speed system clock
µ
s (MIN.) after the STOP