AT32UC3B0256 Atmel Corporation, AT32UC3B0256 Datasheet - Page 57

• 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

9.6.6
Name:
Access Type:
Offset:
Reset Value:
• STARTUP: Oscillator Startup Time
Table 9-9.
• MODE: Oscillator Mode
• OSC32EN: Enable the 32 KHz oscillator
32059L–AVR32–01/2012
STARTUP
31
23
15
0
1
2
3
4
5
6
7
7
-
-
-
-
Note: This register is only reset by Power-On Reset
Select startup time for 32 KHz oscillator.
Choose between crystal, or external clock.
0: External clock connected on XIN32, XOUT32 can be used as a I/O (no crystal).
1: Crystal is connected to XIN32/XOUT32.
2 to 7: reserved .
0: 32 KHz Oscillator is disabled.
1: 32 KHz Oscillator is enabled.
32 KHz Oscillator Control Register
Startup time for 32 KHz oscillator
Number of RC oscillator
clock cycle
0
128
8192
16384
65536
131072
262144
524288
30
22
14
OSCCTRL32
Read/Write
0x030
0x00010000
6
-
-
-
-
29
21
13
5
-
-
-
-
Approximative Equivalent time
(RCOsc = 115 kHz)
0
1.1 ms
72.3 ms
143 ms
570 ms
1.1 s
2.3 s
4.6 s
28
20
12
4
-
-
-
-
27
19
11
3
-
-
-
-
26
18
10
2
-
-
STARTUP
MODE
25
17
9
1
-
-
OSC32EN
24
16
8
0
-
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