SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 315

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

27. Clock Generator
27.1
27.2
27.3
6254C–ATARM–22-Jan-10
Description
Clock Generator Block Diagram
Slow Clock Crystal Oscillator
The Clock Generator is made up of 2 PLL, a Main Oscillator, as well as an RC Oscillator and a
32,768 Hz low-power Oscillator.
It provides the following clocks:
The Clock Generator User Interface is embedded within the Power Management Controller one
and is described in
Figure 27-1. Clock Generator Block Diagram
The Clock Generator integrates a 32,768 Hz low-power oscillator. The XIN32 and XOUT32 pins
must be connected to a 32,768 Hz crystal. Two external capacitors must be wired as shown in
Figure
• SLCK, the Slow Clock, which is the only permanent clock within the system
• MAINCK is the output of the Main Oscillator
• PLLACK is the output of the Divider and PLL A block
• PLLBCK is the output of the Divider and PLL B block
27-2.
Section
AT91SAM9XE128/256/512 Preliminary
OSC_SEL
XOUT32
PLLRCA
28.9. However, the Clock Generator registers are named CKGR_.
XIN32
XOUT
XIN
Clock Generator
Management
Slow Clock
Controller
On Chip
RC OSC
Oscillator
Oscillator
Status
PLL and
Divider A
PLL and
Divider B
Power
Main
Control
Main Clock
MAINCK
PLLA Clock
PLLACK
PLLB Clock
PLLBCK
Slow Clock
SLCK
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