Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
161
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
18.
Shutdown Controller (SHDWC)
18.1
Description
The Shutdown Controller controls the power supplies VDDIO and VDDCORE and the wake-up detection on debounced
input lines.
input lines.
18.2
Embedded Characteristics
Shutdown and Wake-up Logic
Software Assertion of the SHDW Output Pin
Programmable De-assertion from the
WKUP Input Pins
18.3
Block Diagram
Figure 18-1. Shutdown Controller Block Diagram
Shutdown
Wake-up
Shutdown
Output
Controller
SHDN
WKUP0
SHDW
WKMODE0
Shutdown Controller
RTC Alarm
RTTWKEN
SHDW_MR
SHDW_MR
SHDW_CR
CPTWK0
WAKEUP0
RTCWK
SHDW_SR
SHDW_SR
set
set
reset
reset
read SHDW_SR
read SHDW_SR
SLCK