SAM9M10 Atmel Corporation, SAM9M10 Datasheet - Page 339

• Manufacturer Part Number: SAM9M10
• Manufacturer: Atmel Corporation

Specifications of SAM9M10

• Flash (kbytes): 0 Kbytes
• Pin Count: 324
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 160
• Ext Interrupts: 160
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 5
• Lin: 4
• Ssc: 2
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: Yes
• Camera Interface: Yes
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• External Bus Interface: 2
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

25.5.1
25.5.2
25.5.3
25.5.4
Name:
Address:
Access:
6355D–ATARM–7-Sep-11
31
23
15
–
–
–
7
–
Switch from Internal RC Oscillator to the 32768 Hz Crystal
Bypass the 32768 Hz Oscillator
Switch from 32768 Hz Crystal to the Internal RC oscillator
Slow Clock Configuration Register
SCKCR
0xFFFFFD50
Read/Write
30
22
14
–
–
–
6
–
To switch from internal RC oscillator to the 32768 Hz crystal, the programmer must execute the
following sequence:
The following step must be added to bypass the 32768Hz Oscillator.
The same procedure must be followed to switch from 32768Hz crystal to the internal RC
oscillator.
• Switch the master clock to a source different from slow clock (PLLA or PLLB or Main
• Enable the 32768 Hz oscillator by setting the bit OSCEN to 1.
• Wait
• Switch from internal RC to 32768Hz by setting the bit OSCSEL to 1.
• Wait 5 slow clock cycles for internal resynchronization
• Disable the 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 32768 Hz oscillator by setting the bit OSC32EN to 0.
• Switch the master clock to a source different from slow clock (PLLA or PLLB or Main
• Enable the internal RC oscillator by setting the bit RCEN to 1.
• Wait
• Switch from 32768Hz oscillator to internal RC by setting the bit OSCSEL to 0
• Wait 5 slow clock cycles for internal resynchronization
• Disable the 32768Hz oscillator by setting the bit OSC32EN to 0
Oscillator) through the Power management Controller.
Oscillator)
32768 Hz Startup Time for clock stabilization (software loop)
internal RC Startup Time for clock stabilization (software loop)
29
21
13
–
–
–
5
–
28
20
12
–
–
–
4
–
OSCSEL
27
19
11
–
–
–
3
OSC32BYP
26
18
10
–
–
–
2
OSC32EN
25
17
–
–
9
–
1
SAM9M10
RCEN
24
16
–
–
8
–
0
339