Renesas RL78/G1P Hardware User Manual page 412

RL78/G1P
Figure 11-71. Flowchart of SNOOZE Mode Operation (Once Startup)
Remarks 1. <1> to <11> in the figure correspond to <1> to <11> in Figure 11-70 Timing Chart of SNOOZE
Mode Operation (Once Startup).
2. m = 0; p = 00
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
SNOOZE mode operation
TSFmn = 0 for all channels?
Yes
<1>
Write STm0 bit to 1
SAU default setting
Setting SSCm register
<2>
(SWCm = 1, SSECm = 0)
<3>
Write SSm0 bit to 1
Enables interrupt
<4>
Entered the STOP mode
<5>
<6>
<7>
<8>
Reading receive data to
SIOp (=SDRmn[7:0])
Write STm0 bit to 1
<9>
<10>
Write SWCm bit to 1
Write SSm0 bit to 1
<11>
End of SNOOZE mode
CHAPTER 11 SERIAL ARRAY UNIT
No
Become the operation STOP status (SEm0 = 0)
SMRm0, SCRm0 : Communication setting
SDRm0[15:9] : Setting 0000000B
Setting SNOOZE mode
Become the communication wait status (SEm0 = 1)
Clear interrupt request flag (XXIF), reset interrupt mask (XXMK)
and set interrupt enable (EI).
f supplied to the SAU is stopped.
CLK
SCKp edge detected
(Entered the SNOOZE mode)
Supplying a clock to CSIp
(CSIp is receive operation)
Transfer interrupt (INTCSIp) is
generated
(CSIp is receive completion)
The mode switches from SNOOZE to normal operation.
Become the operation STOP status (SEm0 = 0)
Reset SNOOZE mode setting
It becomes communication ready state (SEm0 = 1) under
normal operation
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