SAM4L Datasheet, PDF (186/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

12.7.17 Bandgap Status Register
Name:
BGSR
Access Type:
Read Only
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
VREF
LPBGRDY
BGRDY
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
BGBUFRDY[7:0]
• VREF: Voltage Reference Used by the System
0: Both the Bandgap voltage reference and the Low Power Bandgap voltage reference are currently used by the system.
1: The Bandgap voltage reference is currently used by the system.
2: The Low Power Bandgap voltage reference is currently used by the system.
3: Neither the Bandgap voltage reference nor the Low Power Bandgap voltage reference are used by the system.
• LPBGRDY: Low Power Bandgap Voltage Reference Ready
0: The Low Power Bandgap voltage reference is not ready, therefore all modules using it as a source will not be able to operate
correctly.
1: The Low Power Bandgap voltage reference is ready.
• BGRDY: Bandgap Voltage Reference Ready
0: The Bandgap voltage reference is not ready, therefore all modules using it as a source will not be able to operate correctly.
1: The Bandgap voltage reference is ready.
• BGBUFRDY: Bandgap Buffer Ready
0: The corresponding Bandgap Buffer is not ready, therefore all modules using it as a source will not be able to operate correctly.
1: The corresponding Bandgap Buffer is ready. Refer to the “Bandgap Buffer Mapping” table in the SCIF Module Configuration
section for details.
42023C–SAM–02/2013
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