SAM4L_14 Datasheet, PDF (82/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

ATSAM4L8/L4/L2
8.9.11.1
Name:
Control Register
CR
Access Type:
Write-Only
Offset:
0x00
Reset Value:
0x00000000
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
-
-
-
CE
FSPR
CRC
DIS
EN
Writing a zero to a bit in this register has no effect.
• CE: Chip Erase
Writing a one to this bit triggers the FLASH Erase All (EA) operation which clears all volatile memories, the whole flash array, the
general purpose fuses and the protected state. The Status register DONE field indicates the completion of the operation.
Reading this bit always returns 0
• FSPR: Flash User Page Read
Writing a one to this bit triggers a read operation in the User page. The word pointed by the ADDR register in the page is read
and written to the DATA register. ADDR is post incremented allowing a burst of reads without modifying ADDR. SR.DONE must
be read high prior to reading the DATA register.
Reading this bit always returns 0
• CRC: Cyclic Redundancy Code
Writing a one triggers a CRC calculation over a memory area defined by the ADDR and LENGTH registers. Reading this bit
always returns 0
Note: This feature is restricted while in protected state
• DIS: Disable
Writing a one to this bit disables the module. Disabling the module resets the whole module immediately.
• EN: Enable
Writing a one to this bit enables the module.
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42023GS–SAM–03/2014