AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 62

• Manufacturer Part Number: AT32UC3A4256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4256

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

7.6.5
Name:
Access Type:
Offset:
Reset Value:
• STARTUP: Oscillator Startup Time
• MODE: Oscillator Mode
32072G–11/2011
STARTUP
0
1
2
3
4
5
6
7
31
23
15
7
-
-
-
-
Select startup time for the oscillator.
Choose between crystal, or external clock
0: External clock connected on XIN, XOUT can be used as an I/O (no crystal)
1 to 3: reserved
4: Crystal is connected to XIN/XOUT - Oscillator is used with gain G0 ( XIN from
5: Crystal is connected to XIN/XOUT - Oscillator is used with gain G1 ( XIN from
6: Crystal is connected to XIN/XOUT - Oscillator is used with gain G2 ( XIN from
7: Crystal is connected to XIN/XOUT - Oscillator is used with gain G3 ( XIN from
Oscillator 0/1 Control Registers
Number of RC oscillator
clock cycle
0
64
128
2048
4096
8192
16384
Reserved
30
22
14
OSCCTRL0,1
Read/Write
0x28-0x2C
0x00000000
6
-
-
-
-
29
21
13
5
-
-
-
-
Approximative Equivalent time
(RCSYS = 115 kHz)
0
560 us
1.1 ms
18 ms
36 ms
71 ms
142 ms
Reserved
28
20
12
4
-
-
-
-
27
19
11
3
-
-
-
-
0.4 MHz to 0.9 MHz ).
0.9 MHz to 3.0 MHz ).
3.0 MHz to 8.0 MHz ).
8.0 Mhz).
26
18
10
2
-
-
STARTUP
MODE
25
17
9
1
-
-
24
16
8
0
-
-
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