Datasheet

Table Of Contents
156
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
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.
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
18.4 I/O Lines Description
Table 18-1. 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
RTC Alarm
RTCWKEN
SHDW_MR
SHDW_MR
SHDW_CR
CPTWK0
WAKEUP0
RTCWK SHDW_SR
SHDW_SR
set
set
reset
reset
read SHDW_SR
read SHDW_SR
SLCK