AT32UC3B0256 Atmel Corporation, AT32UC3B0256 Datasheet - Page 76

• Manufacturer Part Number: AT32UC3B0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3B0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 60 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 44
• Ext Interrupts: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 4
• Twi (i2c): 1
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

10.6.1
Name:
Access Type:
Offset:
Reset Value:
• CLKEN: Clock Enable
• PSEL: Prescale Select
• BUSY: RTC Busy
• CLK32: 32 KHz Oscillator Select
• WAKEN: Wakeup Enable
• PCLR: Prescaler Clear
• EN: Enable
32059L–AVR32–01/2012
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
0x00010000
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
-
-
CLKEN
EN
24
16
8
0
-
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