Datasheet

335
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
18.4.8 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.
This register is located in the VDDIO domain.
 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.
 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.
 OSCSEL: 32-kHz Oscillator Selection Status
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
–LPDBCS1LPDBCS0–––––
76543210
OSCSEL SMOS SMS SMRSTS BODRSTS SMWS WKUPS –