SAM9RL64 Atmel Corporation, SAM9RL64 Datasheet - Page 258

• Manufacturer Part Number: SAM9RL64
• Manufacturer: Atmel Corporation

Specifications of SAM9RL64

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 240 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 118
• Ext Interrupts: 118
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 2
• Uart: 5
• Ssc: 2
• Sd / Emmc: 1
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 10
• Adc Speed (ksps): 220
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• 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): 1.08 to 1.32
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

26.5
26.5.1
26.5.2
26.5.3
258
Main Oscillator
AT91SAM9R64/RL64
Main Oscillator Connections
Main Oscillator Startup Time
Main Oscillator Control
The Main Oscillator is designed for a 12 MHz fundamental crystal. The 12 MHz is also used to
generate the 480 MHz USB High Speed Clock (HSCK) thanks to the UTMI PLL (UPLL).
Figure 26-3
Figure 26-3. Main Oscillator Block Diagram
The typical crystal connection is illustrated in
characteristics of the Main Oscillator, see the section “DC Characteristics” of the product
datasheet.
Figure 26-4. Typical Crystal Connection
The startup time of the 12 MHz Main Oscillator is given in the section “DC Characteristics” of the
product datasheet.
To minimize the power required to start up the system, the main oscillator is disabled after reset
and slow clock is selected.
The software enables or disables the main oscillator so as to reduce power consumption by
clearing the MOSCEN bit in the Main Oscillator Register (CKGR_MOR).
When disabling the main oscillator by clearing the MOSCEN bit in CKGR_MOR, the MOSCS bit
in PMC_SR is automatically cleared, indicating the main clock is off.
Slow Clock
XOUT
SLCK
XIN
shows the Main Oscillator block diagram.
OSCOUNT
Oscillator
OSCEN
Oscillator
Counter
12MHz
Main
Main
XIN
XOUT
Figure
Main Clock
MAINCK
MOSCS
26-4. For further details on the electrical
GND
UPLL
UTMI
6289D–ATARM–3-Oct-11
HSCK
480 MHz