at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 76

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

10.6.1
Name:
Access Type:
Offset:
Reset Value:
•
•
•
•
•
•
•
32059J–12/2010
CLKEN: Clock Enable
PSEL: Prescale Select
BUSY: RTC Busy
CLK32: 32 KHz Oscillator Select
WAKEN: Wakeup Enable
PCLR: Prescaler Clear
EN: Enable
31
23
15
7
-
-
-
-
1: The clock is enabled.
0: The clock is disabled.
Selects prescaler bit PSEL as source clock for the RTC.
This bit is set when the RTC is busy and will discard writes to TOP, VAL, and CTRL.
This bit is cleared when the RTC accepts writes to TOP, VAL, and CTRL.
1: The RTC uses the 32 KHz oscillator as clock source.
0: The RTC uses the RC oscillator as clock source.
1: The RTC wakes up the CPU from sleep modes.
0: The RTC does not wake up the CPU from sleep modes.
Writing a one to this bit clears the prescaler.
Writing a zero to this bit has no effect.
This bit always reads as zero.
1: The RTC is enabled.
0: The RTC is disabled.
Control Register
30
22
14
6
-
-
-
-
CTRL
Read/Write
0x00
0x00000000
29
21
13
5
-
-
-
-
BUSY
28
20
12
4
-
-
-
CLK32
27
19
11
3
-
-
WAKEN
26
18
10
2
-
-
PSEL
PCLR
25
17
9
1
-
-
AT32UC3B
CLKEN
EN
24
16
8
0
-
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