SAM9261 Atmel Corporation, SAM9261 Datasheet - Page 258
SAM9261
Manufacturer Part Number
SAM9261
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9260.pdf
(290 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9261.pdf
(749 pages)
4.SAM9261.pdf
(44 pages)
5.SAM9261.pdf
(1274 pages)
6.SAM9261.pdf
(43 pages)
Specifications of SAM9261
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
240 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)
160
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
- SAM9260 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9261 PDF datasheet #4
- SAM9261 PDF datasheet #5
- SAM9261 PDF datasheet #6
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25.9.7
Name:
Address:
Access Type:Read-write
• MOSCEN: Main Oscillator Enable
A crystal must be connected between XIN and XOUT.
0 = The Main Oscillator is disabled.
1 = The Main Oscillator is enabled. OSCBYPASS must be set to 0.
When MOSCEN is set, the MOSCS flag is set once the Main Oscillator startup time is achieved.
• OSCBYPASS: Oscillator Bypass
0 = No effect.
1 = The Main Oscillator is bypassed. MOSCEN must be set to 0. An external clock must be connected on XIN.
When OSCBYPASS is set, the MOSCS flag in PMC_SR is automatically set.
Clearing MOSCEN and OSCBYPASS bits allows resetting the MOSCS flag.
• OSCOUNT: Main Oscillator Start-up Time
Specifies the number of Slow Clock cycles multiplied by 8 for the Main Oscillator start-up time.
6062N–ATARM–3-Oct-11
31
23
15
–
–
7
–
PMC Clock Generator Main Oscillator Register
CKGR_MOR
0xFFFFFC20
30
22
14
–
–
6
–
29
21
13
–
–
5
–
28
20
12
–
–
4
–
OSCOUNT
27
19
11
–
–
3
–
26
18
10
–
–
2
–
OSCBYPASS
AT91SAM9261
25
17
–
–
9
1
MOSCEN
24
16
–
–
8
0
258
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