Datasheet

SAM9G20
DS60001516A-page 112  2017 Microchip Technology Inc.
17. Shutdown Controller (SHDWC)
17.1 Overview
The Shutdown Controller controls the power supplies VDDIO and VDDCORE and the wake-up detection on debounced input lines.
17.2 Block Diagram
Figure 17-1: Shutdown Controller Block Diagram
17.3 I/O Lines Description
17.4 Product Dependencies
17.4.1 Power Management
The Shutdown Controller is continuously clocked by Slow Clock. The Power Management Controller has no effect on the behavior of the
Shutdown Controller.
Table 17-1: I/O Lines Description
Name Description Type
WKUP0 Wake-up 0 input Input
SHDN Shutdown output Output
Shutdown
Wake-up
Shutdown
Output
Controller
SHDN
WKUP0
SHDW
WKMODE0
Shutdown Controller
RTT Alarm
RTTWKEN
SHDW_MR
SHDW_MR
SHDW_CR
CPTWK0
WAKEUP0
RTTWK
SHDW_SR
SHDW_SR
set
set
reset
reset
read SHDW_SR
read SHDW_SR
SLCK