AT91SAM7S64C-AU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT91SAM7S64C-AU

AT91SAM ARM-based Flash MCU

Atmel Corporation 

25.9.10 PMC Master Clock Register

Register Name:

PMC_MCKR

Access Type:

Read-write

31

30

29

28

–

–

–

–

23

22

21

20

–

–

–

–

15

14

13

12

–

–

–

–

7

6

5

4

–

–

–

• CSS: Master Clock Selection

CSS

0

0

1

1

• PRES: Processor Clock Prescaler

PRES

0

0

0

0

0

1

0

1

1

0

1

0

1

1

1

1

27

–

19

–

11

–

3

PRES

0

1

0

1

0

1

0

1

0

1

0

1

26

25

24

–

–

–

18

17

16

–

–

–

10

9

8

–

–

–

2

1

0

CSS

Clock Source Selection

Slow Clock is selected

Main Clock is selected

Reserved

PLL Clock is selected.

Processor Clock

Selected clock

Selected clock divided by 2

Selected clock divided by 4

Selected clock divided by 8

Selected clock divided by 16

Selected clock divided by 32

Selected clock divided by 64

Reserved

SAM7S Series [DATASHEET]

6175M–ATARM–26-Oct-12

209

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