Renesas RL78/G1P Hardware User Manual page 624

RL78/G1P
16.3.3 SNOOZE mode
(1) SNOOZE mode setting and operating statuses
The SNOOZE mode can only be specified for CSIp, UARTq, or the A/D converter. Note that this mode can only be
specified if the CPU clock is the high-speed on-chip oscillator clock.
When using CSIp or UARTq in the SNOOZE mode, set the SWCm bit of serial standby control register m (SSCm) to
1 immediately before switching to the STOP mode. For details, see 11.3 Registers Controlling Serial Array Unit.
When using the A/D converter in the SNOOZE mode, set the AWC bit of A/D converter mode register 2 (ADM2) to 1
immediately before switching to the STOP mode. For details, see 9.3 Registers Controlling A/D Converter.
Remark p = 00; q = 0; m = 0
In SNOOZE mode transition, wait status to be only following time.
Transition time from STOP mode to SNOOZE mode: 18
Remark Transition time from STOP mode to SNOOZE mode varies depending on the temperature conditions and
the STOP mode period.
Transition time from SNOOZE to normal operation:
 When vectored interrupt servicing is carried out:
HS (High-speed main) mode: "4.99
LS (Low-speed main) mode: "1.10
 When vectored interrupt servicing is not carried out:
HS (High-speed main) mode: "4.99
LS (Low-speed main) mode: "1.10
The operating statuses in the SNOOZE mode are shown below.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
 
s to 65 s
 
s to 9.44 s" + 7 clocks
 
s to 5.08 s" + 7 clocks
 
s to 9.44 s" + 1 clock
 
s to 5.08 s" + 1 clock
CHAPTER 16 STANDBY FUNCTION
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