Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Hoja De Datos
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AT91SAM9M10-G45-EK
119
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
17. Shutdown Controller (SHDWC)
17.1
Description
The Shutdown Controller controls the power supplies VDDIO and VDDCORE and the wake-up detection on
debounced input lines.
debounced input lines.
17.2
Embedded Characteristics
The Shut Down Controller is supplied on VDDBU and allows a software-controllable shut down of the system
through the pin SHDN. An input change of the WKUP pin or an alarm releases the SHDN pin, and thus wakes up
the system power supply.
through the pin SHDN. An input change of the WKUP pin or an alarm releases the SHDN pin, and thus wakes up
the system power supply.
17.3
Block Diagram
Figure 17-1.
Shutdown Controller Block Diagram
Shutdown
Wake-up
Shutdown
Output
Controller
SHDN
WKUP0
SHDW
WKMODE0
Shutdown Controller
RTC Alarm
RTT Alarm
RTTWKEN
RTCWKEN
SHDW_MR
SHDW_MR
SHDW_MR
SHDW_CR
CPTWK0
WAKEUP0
RTTWK
RTCWK
SHDW_SR
SHDW_SR
SHDW_SR
set
set
set
reset
reset
reset
read SHDW_SR
read SHDW_SR
read SHDW_SR
SLCK