AT91SAM7L128 SUPC

Supply Controller (SUPC) User Interface

Registers

Register Mapping

Address	Register	Name	Access	Reset
0xFFFFFD10	Supply Controller Control Register	SUPC_CR	write-only	-
0xFFFFFD14	Supply Controller Brownout Mode Register	SUPC_BOMR	read-write	0x00000000
0xFFFFFD18	Supply Controller Mode Register	SUPC_MR	read-write	0x00080a00
0xFFFFFD1C	Supply Controller Wake Up Mode Register	SUPC_WUMR	read-write	0x00000000
0xFFFFFD20	Supply Controller Wake Up Inputs Register	SUPC_WUIR	read-write	0x00000000
0xFFFFFD24	Supply Controller Status Register	SUPC_SR	read-only	0x00000800
0xFFFFFD28	Supply Controller Flash Wake-up Timer Register	SUPC_FWUTR	read-write	0x0000005a

Register Fields

SUPC Supply Controller Control Register

Name: SUPC_CR

Access: write-only

Address: 0xFFFFFD10

31	30	29	28	27	26	25	24
KEY
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	XTALSEL	VROFF	SHDWEOF	SHDW

• SHDW: Shut Down Command
• 0 = No effect.
• 1 = If KEY is correct, enters the device in off mode.
• SHDWEOF: Shut Down After End of Frame
• 0 = No effect.
• 1 = If KEY is correct, enters the device in off mode at the End of Frame from the LCD Controller.
• VROFF: Voltage Regulator Off
• 0 = No effect.
• 1 = If KEY is correct, asserts vddcore_nreset and stops the voltage regulator..
• XTALSEL: Crystal Oscillator Select
• 0 = No effect.
• 1 = If KEY is correct, switches the slow clock on the crystal oscillator output.
• KEY: Password

-

SUPC Supply Controller Brownout Mode Register

Name: SUPC_BOMR

Access: read-write

Address: 0xFFFFFD14

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	BODRSTEN	-	BODSMPL
7	6	5	4	3	2	1	0
-	-	-	-	BODTH

• BODTH: Brownout Threshold
• 0x0 = 1.9 V
• 0x1 = 2.0 V
• 0x2 = 2.1 V
• 0x3 = 2.2 V
• 0x4 = 2.3 V
• 0x5 = 2.4 V
• 0x6 = 2.5 V
• 0x7 = 2.6 V
• 0x8 = 2.7 V
• 0x9 = 2.8 V
• 0xA = 2.9 V
• 0xB = 3.0 V
• 0xC = 3.1 V
• 0xD = 3.2 V
• 0xE = 3.3 V
• 0xF = 3.4 V
• BODSMPL: Brownout Sampling Period

-

• BODRSTEN: Brownout Reset Enable
• 0 = The core reset signal, vddcore_nreset is not affected when a brownout occurs.
• 1 = The core reset signal, vddcore_nreset is asserted when a brownout occurs.

SUPC Supply Controller Mode Register

Name: SUPC_MR

Access: read-write

Address: 0xFFFFFD18

31	30	29	28	27	26	25	24
KEY
23	22	21	20	19	18	17	16
-	-	-	OSCBYPASS	FLASHON	RTON	SRAMON	-
15	14	13	12	11	10	9	8
-	-	-	VRRSTEN	VRVDD			VRDEEP
7	6	5	4	3	2	1	0
-	-	LCDMODE		LCDOUT

• LCDOUT: LCD Charge Pump Output Voltage Selection
• 0x0 = 2.400 V
• 0x1 = 2.467 V
• 0x2 = 2.533 V
• 0x3 = 2.600 V
• 0x4 = 2.667 V
• 0x5 = 2.733 V
• 0x6 = 2.800 V
• 0x7 = 2.867 V
• 0x8 = 2.933 V
• 0x9 = 3.000 V
• 0xA = 3.067 V
• 0xB = 3.133 V
• 0xC = 3.200 V
• 0xD = 3.267 V
• 0xE = 3.333 V
• 0xF = 3.400 V
• LCDMODE: LCD Power Supply Mode
• 0x0 = The internal supply source and the external supply source are both deselected and the on-chip charge pump is turned off.
• 0x1 = At the End of Frame from the LCD Controller, the internal supply source and the external supply source are both deselected and the on-chip charge pump is turned off.
• 0x2 = The external supply source is selected.
• 0x3 = The internal supply source is selected and the on-chip charge pump is turned on.
• VRDEEP: Voltage Regulator Deep Mode
• 0 = Voltage Regulator Deep Mode is disabled.
• 1 = Voltage Regulator Deep Mode is enabled.
• VRVDD: Voltage Regulator Output Voltage Selection

-

• VRRSTEN: Voltage Regulation Loss Reset Enable
• 0 = Losing the voltage regulation does not affect the core reset signal, vddcore_nreset.
• 1 = Losing the voltage regulation asserts the core reset signal, vddcore_nreset.
• SRAMON: SRAM On
• 0 = SRAM (Backup) switched off in backup mode.
• 1 = SRAM (Backup) switched on in backup mode.
• RTON: Real Time Clock Alarm Power Switch On
• 0 = Real Time Clock Alarm switched off.
• 1 = Real Time Clock Alarm switched on.
• FLASHON: Flash Memory Power Switch On
• 0 = Flash Memory switched off.
• 1 = Flash Memory switched on.
• OSCBYPASS: Oscillator Bypass
• 0 = No effect. Clock selection depends on XTALSEL value.
• 1 = The 32-KHz XTAL oscillator is selected and is put in bypass mode.
• KEY: Password Key

-

SUPC Supply Controller Wake Up Mode Register

Name: SUPC_WUMR

Access: read-write

Address: 0xFFFFFD1C

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	WKUPDBC			-	FWUPDBC
7	6	5	4	3	2	1	0
-	-	-	-	RTCEN	-	BODEN	FWUPEN

• FWUPEN: Force Wake Up Enable
• 0 = The Force Wake Up pin has no wake up effect.
• 1 = The Force Wake Up pin low forces the wake up of the core power supply.
• BODEN: Brownout Wake Up Enable
• 0 = The brownout alarm signal has no wake up effect.
• 1 = The brownout alarm signal forces the wake up of the core power supply.
• RTCEN: Real Time Clock Wake Up Enable
• 0 = The RTC alarm signal has no wake up effect.
• 1 = The RTC alarm signal forces the wake up of the core power supply.
• FWUPDBC: Force Wake Up Debouncer

-

• WKUPDBC

-

SUPC Supply Controller Wake Up Inputs Register

Name: SUPC_WUIR

Access: read-write

Address: 0xFFFFFD20

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-
7	6	5	4	3	2	1	0
-	-	-	-	-	-	-	-

SUPC Supply Controller Status Register

Name: SUPC_SR

Access: read-only

Address: 0xFFFFFD24

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	FLASHS	RTS	-	LCDS
7	6	5	4	3	2	1	0
OSCSEL	BROWNOUT	BODS	BODRSTS	VRRSTS	BODWS	WKUPS	FWUPS

• FWUPS: FWUP Wake Up Status
• 0 = No wake up due to the assertion of the FWUP pin has occurred since the last read of SUPC_SR.
• 1 = 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 wake up due to the assertion of the WKUP pins has occurred since the last read of SUPC_SR.
• 1 = At least one wake up due to the assertion of the WKUP pins has occurred since the last read of SUPC_SR.
• BODWS: Brownout Detection Wake Up Status
• 0 = No wake up due to a brownout detection has occurred since the last read of SUPC_SR.
• 1 = At least one wake up due to a brownout detection has occurred since the last read of SUPC_SR.
• VRRSTS: Voltage Regulation Loss Reset Status
• 0 = No voltage regulation loss has generated a core reset since the last read of the SUPC_SR.
• 1 = At least one voltage regulation loss has generated a core reset since the last read of the SUPC_SR.
• BODRSTS: Brownout Detection Reset Status
• 0 = No brownout detection has generated a core reset since the last read of the SUPC_SR.
• 1 = At least one brownout detection has generated a core reset since the last read of the SUPC_SR.
• BODS: Brownout Detector Status
• 0 = No brownout has been detected since the last read of SUPC_SR.
• 1 = At least one brownout has been detected since the last read of SUPC_SR.
• BROWNOUT: Brownout Detector Output Status
• 0 = The brownout detector detected VDDIO1 higher than its threshold at its last measurement.
• 1 = The brownout detector detected VDDIO1 lower than its threshold at its last measurement.
• OSCSEL: 32-kHz Oscillator Selection Status
• 0 = The slow clock, SLCK is generated by the embedded 32-kHz RC oscillator.
• 1 = The slow clock, SLCK is generated by the 32-kHz crystal oscillator.
• LCDS: LCD Status
• 0 = The LCD Controller is off and cannot be used.
• 1 = The LCD Controller is on and can be used.
• RTS: Clock Status
• 0 = The Clock is off and cannot be used.
• 1 = The Clock is on and can be used.
• FLASHS: Flash Memory Status
• 0 = The Flash Memory is off and cannot be used.
• 1 = The Flash Memory is on and can be used.
• FWUPIS: FWUP Input Status
• 0 = FWUP input is tied low.
• 1 = FWUP input is tied high.
• WKUPIS0: WKUP Input Status 0
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS1: WKUP Input Status 1
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS2: WKUP Input Status 2
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS3: WKUP Input Status 3
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS4: WKUP Input Status 4
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS5: WKUP Input Status 5
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS6: WKUP Input Status 6
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS7: WKUP Input Status 7
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS8: WKUP Input Status 8
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS9: WKUP Input Status 9
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS10: WKUP Input Status 10
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS11: WKUP Input Status 11
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS12: WKUP Input Status 12
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS13: WKUP Input Status 13
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS14: WKUP Input Status 14
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.
• WKUPIS15: WKUP Input Status 15
• 0 = The corresponding wake-up input is disabled, or was inactive at the time the debouncer triggered a wake up event.
• 1 = The corresponding wake-up input was active at the time the debouncer triggered a wake up event.

SUPC Supply Controller Flash Wake-up Timer Register

Name: SUPC_FWUTR

Access: read-write

Address: 0xFFFFFD28

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-
23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-
15	14	13	12	11	10	9	8
-	-	-	-	-	-	FWUT
7	6	5	4	3	2	1	0
FWUT

• FWUT: Flash Wake Up Timer

-