Datasheet

287
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
16.5.8 Supply Controller Status Register
Name: SUPC_SR
Address: 0x400E1A24
Access: Read-write
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.
• FWUPS: FWUP Wake Up Status
0 (NO) = no wake up due to the assertion of the FWUP pin has occurred since the last read of SUPC_SR.
1 (PRESENT) = at least one wake up due to the assertion of the FWUP pin has occurred since the last read of 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 detec-
tion 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.
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
–––FWUPIS––––
76543210
OSCSEL SMOS SMS SMRSTS BODRSTS SMWS WKUPS FWUPS