SAM4L Datasheet, PDF (183/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
12.7.14 Voltage Regulator Configuration Register
Name:
Access Type:
Reset Value:
VREGCR
Read/Write
-
31
30
29
28
27
26
25
24
SFV
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
SSWEVT
SSW
SSG
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
DIS
• SFV: Store Final Value
0: The DIS field is read/write.
1: The DIS field is read-only, to protect against further accidental writes.
• SSWEVT: Stop Switching On Event Enable
0: The stop switching mechanism is not controlled by the Peripheral Event Controller.
1: The stop switching mechanism is controlled by the Peripheral Event Controller.
This bit should be set only when the switching regulator feature is used.
• SSW: Stop Switching
0: The switching regulator is not forced to stop switching.
1: The switching regulator is forced to stop switching if the SSWEVT bit is set to zero.
This bit should be set only when the switching regulator feature is used.
• SSG: Spread Spectrum Generator Enable
0: The spread spectrum of the internal switching oscillator is disabled.
1: The spread spectrum of the internal switching oscillator is enabled.
To operate, the spread spectrum functionality requires the CLKOEN in the RC1MCR register to be enabled.
This bit should be set only when the switching regulator feature is used.
• DIS: Voltage Regulator disable
0: The voltage regulator is enabled.
1: The voltage regulator is disabled.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Refer to
Section 12.7.7 ”Unlock Register” on page 173 for details.
42023C–SAM–02/2013
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