SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 285
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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17.5.3
Name:
Address:
Access:
• VROFF: Voltage Regulator Off
0 (NO_EFFECT) = no effect.
1 (STOP_VREG) = if KEY is correct, asserts vddcore_nreset and stops the voltage regulator.
• XTALSEL: Crystal Oscillator Select
0 (NO_EFFECT) = no effect.
1 (CRYSTAL_SEL) = if KEY is correct, switches the slow clock on the crystal oscillator output.
• KEY: Password
Should be written to value 0xA5. Writing any other value in this field aborts the write operation.
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
31
23
15
–
–
7
–
Supply Controller Control Register
SUPC_CR
0x400E1A10
Write-only
30
22
14
–
–
6
–
29
21
13
–
–
5
–
28
20
12
–
–
4
–
KEY
XTALSEL
27
19
11
–
–
3
VROFF
26
18
10
–
–
2
25
17
–
9
1
–
SAM3X/A
SAM3X/A
24
16
–
8
–
0
–
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