Datasheet

115
SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
16. Shutdown Controller (SHDWC)
16.1 Overview
The Shutdown Controller controls the power supplies VDDIO and VDDCORE and the wakeup detection on
debounced input lines.
16.2 Embedded Characteristics
 Shutdown and Wakeup logic:
 Software programmable assertion of the SHDN pin
 Deassertion Programmable on a WKUP pin level change or on alarm
16.3 Block Diagram
Figure 16-1. Shutdown Controller Block Diagram
16.4 I/O Lines Description
16.5 Product Dependencies
16.5.1 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.
Shutdown
Wake-up
Shutdown
Output
Controller
SHDN
WKUP0
SHDW
WKMODE0
Shutdown Controller
RTT Alarm
RTTWKEN
SHDW_MR
SHDW_SHMR
SHDW_SR
CPTWK0
WAKEUP0
RTTWK
SHDW_SR
set
set
reset
reset
read SHDW_SR
read SHDW_SR
SLCK
SHDW_SR
Table 16-1. I/O Lines Description
Name Description Type
WKUP0 Wakeup 0 input Input
SHDN Shutdown output Output