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ATSAM4S-XPLD
304
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
18.5.8 Supply Controller Status Register
Name:
SUPC_SR
Address:
0x400E1424
Access:
Read-only
Note:
Because of the asynchronism between the Slow Clock (SCLK) and the System Clock (MCK), the status register flag
reset is taken into account only 2 slow clock cycles after the read of the SUPC_SR.
reset is taken into account only 2 slow clock cycles after the read of the SUPC_SR.
• WKUPS: WKUP Wake Up Status
0 (NO) = no wake up due to the assertion of the WKUP pins has occurred since the last read of SUPC_SR.
1 (PRESENT) = at least one wake up due to the assertion of the WKUP pins has occurred since the last read of SUPC_SR.
• SMWS: Supply Monitor Detection Wake Up Status
0 (NO) = no wake up due to a supply monitor detection has occurred since the last read of SUPC_SR.
1 (PRESENT) = at least one wake up due to a supply monitor detection has occurred since the last read of SUPC_SR.
• BODRSTS: Brownout Detector Reset Status
0 (NO) = no core brownout rising edge event has been detected since the last read of the SUPC_SR.
1 (PRESENT) = at least one brownout output rising edge event has been detected since the last read of the SUPC_SR.
When the voltage remains below the defined threshold, there is no rising edge event at the output of the brownout detection cell.
The rising edge event occurs only when there is a voltage transition below the threshold.
The rising edge event occurs only when there is a voltage transition below the threshold.
• SMRSTS: Supply Monitor Reset Status
0 (NO) = no supply monitor detection has generated a core reset since the last read of the SUPC_SR.
1 (PRESENT) = at least one supply monitor detection has generated a core reset since the last read of the SUPC_SR.
• SMS: Supply Monitor Status
0 (NO) = no supply monitor detection since the last read of SUPC_SR.
1 (PRESENT) = at least one supply monitor detection since the last read of SUPC_SR.
• SMOS: Supply Monitor Output Status
0 (HIGH) = the supply monitor detected VDDIO higher than its threshold at its last measurement.
1 (LOW) = the supply monitor detected VDDIO lower than its threshold at its last measurement.
31
30
29
28
27
26
25
24
WKUPIS15
WKUPIS14
WKUPIS13
WKUPIS12
WKUPIS11
WKUPIS10
WKUPIS9
WKUPIS8
23
22
21
20
19
18
17
16
WKUPIS7
WKUPIS6
WKUPIS5
WKUPIS4
WKUPIS3
WKUPIS2
WKUPIS1
WKUPIS0
15
14
13
12
11
10
9
8
LPDBCS1
LPDBCS0
–
–
–
–
–
7
6
5
4
3
2
1
0
OSCSEL
SMOS
SMS
SMRSTS
BODRSTS
SMWS
WKUPS
–