ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 298

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

19.4.5
Name:
Address:
Access:
• BODRSTEN: Brownout Detector Reset Enable
0 (NOT_ENABLE) = the core reset signal “vddcore_nreset” is not affected when a brownout detection occurs.
1 (ENABLE) = the core reset signal, vddcore_nreset is asserted when a brownout detection occurs.
• BODDIS: Brownout Detector Disable
0 (ENABLE) = the core brownout detector is enabled.
1 (DISABLE) = the core brownout detector is disabled.
• VDDIORDY: VDDIO Ready
0 (VDDIO_REMOVED) = VDDIO is removed (used before going to backup mode when backup batteries are used)
1 (VDDIO_PRESENT) = VDDIO is present (used before going to backup mode when backup batteries are used)
If the backup batteries are not used, VDDIORDY must be kept set to 1.
• ONREG: Voltage Regulator enable
0 (ONREG_UNUSED) = Voltage Regulator is not used
1 (ONREG_USED) = Voltage Regulator is used
• OSCBYPASS: Oscillator Bypass
0 (NO_EFFECT) = no effect. Clock selection depends on XTALSEL value.
1 (BYPASS) = the 32-KHz XTAL oscillator is selected and is put in bypass mode.
• KEY: Password Key
Should be written to value 0xA5. Writing any other value in this field aborts the write operation.
298
31
23
15
–
–
7
–
SAM3U Series
Supply Controller Mode Register
VDDIORDY
ONREG
30
22
14
0x400E1218
–
6
–
SUPC_MR
Read-write
BODDIS
29
21
13
–
5
–
OSCBYPASS
BODRSTEN
28
20
12
4
–
KEY
27
19
11
–
–
3
–
26
18
10
–
–
2
–
25
17
–
9
–
1
–
6430D–ATARM–25-Mar-11
24
16
–
8
–
0
–