ATSAM4LS4BA-AU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATSAM4LS4BA-AU

ATSAM ARM-based Flash MCU

Atmel Corporation 

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.

82

42023GS–SAM–03/2014

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