SAM4L Datasheet, PDF(184/1185 Page) ATMEL Corporation – ATSAM ARM-based Flash MCU

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SAM4L Datasheet, PDF (184/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

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12.7.15 1MHz RC Clock Configuration Register

Name:

Access Type:

Reset Value:

RC1MCR

Read/Write

-

ATSAM4L4/L2

31

30

29

28

27

26

25

24

-

-

-

-

-

-

-

-

23

22

21

20

19

18

17

16

-

-

-

-

-

-

-

-

15

14

13

12

11

10

9

8

-

-

-

CLKCAL[4:0]

7

6

5

4

3

2

1

0

FCD

-

-

-

-

-

-

CLKOEN

â¢ CLKCAL: 1MHz RC Osc Calibration

Calibration field of the internal RC oscillator.

â¢ CLKOEN: 1MHz RC Osc Clock Output Enable

0: The 1MHz RC oscillator is not output.

1: The 1MHz RC oscillator is output, available as a logic clock.

â¢ FCD: Flash Calibration Done

This bit is set to 1 when the CLKCAL field has been loaded by the flash fuses after a reset (read only).

0: The flash calibration will be redone after any reset.

1: The flash calibration will only be redone after a power-on reset (POR18).

Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Refer to

Section 12.7.7 âUnlock Registerâ on page 173 for details.

42023CâSAMâ02/2013

184

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