SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 170
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SAM9G10
Manufacturer Part Number
SAM9G10
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(1274 pages)
2.SAM9261.pdf
(43 pages)
3.SAM9G10.pdf
(750 pages)
4.SAM9G10.pdf
(39 pages)
Specifications of SAM9G10
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
266 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)
1
Uart
4
Ssc
3
Sd / Emmc
1
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
16
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
32khz Rtc
Yes
Calibrated Rc Oscillator
No
- Current page: 170 of 1274
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20.3.2
20.3.3
170
170
SAM9G35
SAM9G35
Bypass the 32,768 Hz Oscillator
Switch from 32,768 Hz Crystal Oscillator to Internal 32 kHz RC Oscillator
The following steps must be added to bypass the 32,768 Hz oscillator:
The same procedure must be followed to switch from the 32,768 Hz crystal oscillator to the inter-
nal 32 kHz RC oscillator:
• Wait 32,768 Hz Startup Time for clock stabilization (software loop).
• Switch from internal 32 kHz RC oscillator to 32,768 Hz oscillator by setting the bit OSCSEL
• Wait 5 slow clock cycles for internal resynchronization.
• Disable the 32 kHz RC oscillator by setting the bit RCEN to 0.
• An external clock must be connected on XIN32.
• Enable the bypass path OSC32BYP bit set to 1.
• Disable the 32,768 Hz oscillator by setting the bit OSC32EN to 0.
• Switch the master clock to a source different from slow clock (PLL or Main Oscillator).
• Enable the internal 32 kHz RC oscillator for low power by setting the bit RCEN to 1
• Wait internal 32 kHz RC Startup Time for clock stabilization (software loop).
• Switch from 32,768 Hz oscillator to internal RC by setting the bit OSCSEL to 0.
• Wait 5 slow clock cycles for internal resynchronization.
• Disable the 32,768 Hz oscillator by setting the bit OSC32EN to 0.
to 1.
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
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