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Cypress FM4 Series - Page 327

Cypress FM4 Series
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CHAPTER 7-3: VBAT Domain(B)
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 327
Block Configuration of Hibernation Controller
The hibernation controller is part of the RTC circuit. Figure 4-3 shows the configuration of the hibernation
controller.
Figure 4-3 Hibernation Controller
Example of Hibernation Operation Flow
Figure 4-4 shows the hibernation operation flow.
Figure 4-4 Example of Hibernation Operation Flow
Always-on Domain
VBAT
interface
Stop of operation
Normal operation
Hibernation state
Initialization
Start of hibernation
Return to normal
operation
P48/VREGCTL
P49/VWAKEUP
VBAT Domain
CALENDAR
(alarm
interrupt)
EWKUP[0]
HIBRST[0]

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