AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 59

• Manufacturer Part Number: AT32UC3C2512C Automotive
• Manufacturer: Atmel Corporation

7.7.2
Name:
Access Type:
Offset:
Reset Value:
•
Note that if CPUDIV is written to 0, CPUSEL should also be written to 0 to ensure correct operation.
Also note that writing this register clears POSCSR:CKRDY. The register must not be re-written until CKRDY goes high.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Please
refer to the UNLOCK register description for details.
9166C–AVR-08/11
CPUDIV, CPUSEL: CPU Division and Clock Select
CPUDIV
31
23
15
7
-
-
-
• CPUDIV = 0: CPU clock equals main clock.
• CPUDIV = 1: CPU clock equals main clock divided by 2
CPU Clock Select
30
22
14
6
-
-
-
-
CPUSEL
Read/Write
0x0004
0x00000000
29
21
13
5
-
-
-
-
28
20
12
4
-
-
-
-
(CPUSEL+1)
27
19
11
3
-
-
-
-
.
26
18
10
2
-
-
-
CPUSEL
25
17
9
1
-
-
-
AT32UC3C
24
16
8
0
-
-
-
59