Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO 数据表
产品代码
ATSAM4L-XPRO
190
42023E–SAM–07/2013
ATSAM4L8/L4/L2
12.7.15
1MHz RC Clock Configuration Register
Name: RC1MCR
Access Type:
Read/Write
Reset Value:
-
• CLKCAL: 1MHz RC Osc Calibration
Calibration field of the internal RC oscillator.
• 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.
• 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
for details.
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