SAM9RL64 Atmel Corporation, SAM9RL64 Datasheet - Page 31

• 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

Figure 9-2.
9.6
9.6.1
9.7
6289D–ATARM–3-Oct-11
Slow Clock Selection
Power Management Controller
Description
Clock Generator Block Diagram
The AT91SAM9R64/RL64 slow clock can be generated either by an external 32768Hz crystal or
the on-chip RC oscillator. The 32768Hz crystal oscillator can be bypassed to accept an external
slow clock on XIN32.
Configuration is located in the slow clock control register (SCKCR) located at address
0xFFFFFD50 in the backed up part of the system controller and so is preserved while VDDBU is
present.
Refer to the “Clock Generator” section for more details.
The Power Management Controller provides all the clock signals to the system. It provides:
This allows the software control of five flexible operating modes:
• the Processor Clock PCK
• the Master Clock MCK, in particular to the Matrix and the memory interfaces
• the USB Device HS Clock HSCK
• independent peripheral clocks, typically at the frequency of MCK
• two programmable clock outputs: PCK0 and PCK1
• Normal Mode, processor and peripherals running at a programmable frequency
• Idle Mode, processor stopped waiting for an interrupt
• Slow Clock Mode, processor and peripherals running at low frequency
XOUT32
PLLRCA
XIN32
XOUT
XIN
Clock Generator
Management
12M Main
Slow Clock
Controller
On Chip
Oscillator
RC OSC
PLL and
Status
Oscillator
(PLLB)
Divider
Power
UPLL
Control
RCEN
Slow Clock
SLCK
OSCSEL
OSC32EN
OSC32BYP
Main Clock
MAINCK
HSCK
PLL Clock
PLLCK
AT91SAM9R64/RL64
31