SAM4L Datasheet, PDF (1022/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

38.7.15 Calibration Register
Name:
CALIB
Access Type:
Read/Write
Offset:
0x3C
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
-
-
-
-
-
-
-
23
22
21
20
19
18
17
-
-
-
-
-
-
-
15
14
13
12
11
10
9
BIASCAL
-
-
-
7
6
5
4
3
2
1
CALIB
• FCD: Flash Calibration Done
Set to one when CALIB and BIASCAL have been updated by the flash fuses after a reset.
1: The flash calibration will be redone after any reset
0: The flash calibration will only be redone after a power-on reset
• BIASCAL: Bias calibration
BIASCAL
0000
0001
0010
0011
0100
0101
0110
0111
10XX
11XX
Default setting
Pure bandgap bias
Ptat current
3.0
3.0+0.75
3.0+1.5
3.0+1.5+0.75
3.0
3.0+0.75
3.0+1.5
3.0+1.5+0.7
0
0
Bgap current
1.1
1.1
1.1
1.1
1.1+1.1
1.1+1.1
1.1+1.1
1.1+1.1
5.5
5.5+1.1
Total current
4.1
4.85
5.6
6.35
5.2
5.95
6.7
7.45
5.5
6.6
• BIASSEL: Select bias mode
1: Select bandgap bias
0: Select mixed bias
24
-
16
FCD
8
BIASSEL
0
42023C–SAM–02/2013
1022