RL78/G1P
CHAPTER 16 STANDBY FUNCTION
R01UH0895EJ0100 Rev.1.00
606
Nov 29, 2019
Table 16-3. Operating Statuses in SNOOZE Mode
SNOOZE Mode Setting
Item
When Inputting CSIp/UARTq Data Reception Signal or A/D Converter Timer Trigger Signal
While in STOP Mode
When CPU Is Operating on High-speed On-chip Oscillator Clock (f
IH
)
System clock
Clock supply to the CPU is stopped
Main system clock f
IH
Operation
started
f
X
Stopped
f
EX
f
IL
Set by bits 0 (WDSTBYON) and 4 (WDTON) of option byte (000C0H)
CPU Operation
stopped
Code flash memory
Data flash memory
RAM
Port (latch)
Use of the status while in the STOP mode continues
Timer array unit
Operation disabled
Watchdog timer
See
CHAPTER 8 WATCHDOG TIMER
Clock output/buzzer output
Operation stopped
A/D converter
Operable
D/A converter
Operable (status before SNOOZE mode was set is retained)
Serial array unit (SAU)
Operable only CSIp and UARTq. Operation disabled other than CSIp and UARTq.
Serial interface (IICA)
Operation disabled
DMA controller
Event link controller (ELC)
Operable function blocks can be linked
Power-on-reset function
Operable
Voltage detection function
External interrupt
CRC operation function
Operation disabled
RAM parity error detection function
RAM guard function
SFR guard function
Illegal-memory access
detection function
Remarks
1.
Operation
stopped:
Operation is automatically stopped before switching to the SNOOZE mode.
Operation disabled: Operation is stopped before switching to the SNOOZE mode.
f
IH
: High-speed on-chip oscillator clock
f
IL
: Low-speed on-chip oscillator clock
f
X
: X1 clock
f
EX
: External main system clock
2.
p = 00; q = 0