AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 163

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

12.7.1
Name:
Access Type:
Offset:
Reset Value:
• MCSEL: Main Clock Select
Table 12-8.
Note:
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.
32145A–12/2011
MCSEL[2:0]
31
23
15
7
-
-
-
-
1. If the 120MHz RC oscillator is selected as main clock source, it must be divided by at least 4 before being used as clock
0
1
2
3
Main Clock Control
source for the CPU. This division is selected by writing to the CPUSEL and CPUDIV bits in the CPUSEL register, before
switching to RC120M as main clock source.
Main clocks in AT32UC3L0128/256.
30
22
14
6
-
-
-
-
MCCTRL
Read/Write
0x000
0x00000000
System RC oscillator (RCSYS)
120MHz RC oscillator
Main clock source
Oscillator0 (OSC0)
(RC120M)
DFLL
29
21
13
5
-
-
-
-
(1)
28
20
12
4
-
-
-
-
27
19
11
3
-
-
-
-
26
18
10
2
-
-
-
AT32UC3L0128/256
MCSEL
25
17
9
1
-
-
-
24
16
8
0
-
-
-
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