at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 152

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

18.6.2
Register Name:
Access Type:
• WKMODE0: Wake-up Mode 0
• CPTWK0: Counter on Wake-up 0
Defines the number of 16 Slow Clock cycles, the level detection on the corresponding input pin shall last before the wake-
up event occurs. Because of the internal synchronization of WKUP0 , the SHDN pin is released
(CPTWK x 16 + 1) Slow Clock cycles after the event on WKUP.
• RTTWKEN: Real-time Timer Wake-up Enable
0 = The RTT Alarm signal has no effect on the Shutdown Controller.
1 = The RTT Alarm signal forces the de-assertion of the SHDN pin.
152
31
23
15
–
–
7
0
0
1
1
WKMODE[1:0]
AT91SAM9263 Preliminary
Shutdown Mode Register
30
22
14
–
–
6
SHDW_MR
Read/Write
0
1
0
1
CPTWK0
–
Wake-up Input Transition Selection
None. No detection is performed on the wake-up input
Low to high level
High to low level
Both levels change
29
21
13
–
–
5
28
20
12
–
–
4
27
19
11
–
–
–
3
–
26
18
10
–
–
–
2
–
25
17
–
–
9
1
WKMODE0
6249D–ATARM–20-Dec-07
–
RTTWKEN
24
16
–
8
0