UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 755

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) STOP mode release
High-speed system
clock (X1 oscillation)
is selected as CPU
clock when STOP
instruction is executed
High-speed system
clock (external clock
input) 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
High-speed system
clock (X1 oscillation)
High-speed system
clock (external clock
input)
Internal high-speed
oscillation clock
Notes 1. When AMPH = 1
The STOP mode can be released by the following two sources.
2. The wait time is as follows:
• When vectored interrupt servicing is carried out:
• When vectored interrupt servicing is not carried out:
STOP mode
STOP mode release
Figure 20-5. Operation Timing When STOP Mode Is Released
(When Unmasked Interrupt Request Is Generated)
Wait for oscillation accuracy
(oscillation stabilization time set by OSTS)
stabilization (86 to 361 s)
Supply of the CPU clock is stopped (4.06 to 16.12 s)
CHAPTER 20 STANDBY FUNCTION
Preliminary User’s Manual U19748EJ1V0UD
Supply of the CPU clock is stopped (160 external clocks)
HALT status
Internal high-speed
Wait
oscillation clock
Wait
Note2
Note2
Clock switched by software
Clock switched by software
8 or 9 clocks
2 or 3 clocks
High-speed system clock
High-speed system clock
High-speed system clock
Note1
Note1
753