AT32UC3A464S Atmel Corporation, AT32UC3A464S Datasheet - Page 45

• Manufacturer Part Number: AT32UC3A464S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464S

• Flash (kbytes): 64 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: AES
• 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

7.5.4.1
32072G–11/2011
Osc0 clock
Osc1 clock
Enabling the PLL
PLLOSC
Figure 7-3.
PLLn is enabled by writing the PLLEN bit in the PLLn register. PLLOSC selects Oscillator 0 or 1
as clock source. The PLLMUL and PLLDIV bitfields must be written with the multiplication and
division factors, respectively, creating the voltage controlled ocillator frequency f
frequency f
if PLLDIV > 0
if PLLDIV = 0
Note:
If PLLOPT[1] field is set to 0:
If PLLOPT[1] field is set to 1:
0
1
f
f
f
f
f
f
IN
VCO
IN
VCO
PLL
PLL
Refer to Electrical Characteristics section for F
= f
= f
= f
= f
= (PLLMUL+1)/(PLLDIV) • f
= 2 • (PLLMUL+1) • f
Divider
PLL
OSC
OSC
PLLDIV
Input
VCO.
VCO
PLL with Control Logic and Filters
:
/2 • PLLDIV
/ 2
.
Fin
OSC
Divider
Output
PLLMUL
PLLOPT
PLLEN
PLL
OSC
IN
and F
VCO
frequency range.
Mask
LOCK
PLL clock
VCO
and the PLL
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