SAM4L Datasheet, PDF (947/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

35.4.1 Control Register
Name:
CR
Access Type:
Write-only
Offset:
0x00
Reset Value:
–
31
30
29
28
27
26
KEY
23
22
21
20
19
18
KEY
15
14
13
12
11
10
KEY
7
6
5
4
3
2
–
–
–
–
–
–
• KEY: Security Key
KEY = 0x524e47 (RNG in ASCII)
This field must be written to 0x524E47 for a write operation to be effective.
• ENABLE: Enables the TRNG to provide random values
Writing a zero to this bit disables the TRNG.
Writing a one to this bit enables the TRNG.
ATSAM4L4/L2
25
24
17
16
9
8
1
0
–
ENABLE
42023C–SAM–02/2013
947