SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 909
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SAM9X35
Manufacturer Part Number
SAM9X35
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9X25.pdf
(45 pages)
3.SAM9X25.pdf
(1145 pages)
4.SAM9X25.pdf
(45 pages)
5.SAM9X25.pdf
(1325 pages)
Specifications of SAM9X35
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
105
Ext Interrupts
105
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
3
Uart
7
Can
2
Lin
4
Ssc
1
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR/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
- SAM9261 PDF datasheet
- SAM9X25 PDF datasheet #2
- SAM9X25 PDF datasheet #3
- SAM9X25 PDF datasheet #4
- SAM9X25 PDF datasheet #5
- Current page: 909 of 1325
- Download datasheet (30Mb)
41.7.3
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11
Time Management Unit
The CAN Controller integrates a free-running 16-bit internal timer. The counter is driven by the
bit clock of the CAN bus line. It is enabled when the CAN controller is enabled (CANEN set in the
CAN_MR register). It is automatically cleared in the following cases:
The application can also reset the internal timer by setting TIMRST in the CAN_TCR register.
The current value of the internal timer is always accessible by reading the CAN_TIM register.
When the timer rolls-over from FFFFh to 0000h, TOVF (Timer Overflow) signal in the CAN_SR
register is set. TOVF bit in the CAN_SR register is cleared by reading the CAN_SR register.
Depending on the corresponding interrupt mask in the CAN_IMR register, an interrupt is gener-
ated while TOVF is set.
In a CAN network, some CAN devices may have a larger counter. In this case, the application
can also decide to freeze the internal counter when the timer reaches FFFFh and to wait for a
restart condition from another device. This feature is enabled by setting TIMFRZ in the CAN_MR
register. The CAN_TIM register is frozen to the FFFFh value. A clear condition described above
restarts the timer. A timer overflow (TOVF) interrupt is triggered.
To monitor the CAN bus activity, the CAN_TIM register is copied to the CAN _TIMESTP register
after each start of frame or end of frame and a TSTP interrupt is triggered. If TEOF bit in the
CAN_MR register is set, the value is captured at each End Of Frame, else it is captured at each
Start Of Frame. Depending on the corresponding mask in the CAN_IMR register, an interrupt is
generated while TSTP is set in the CAN_SR. TSTP bit is cleared by reading the CAN_SR
register.
The time management unit can operate in one of the two following modes:
Timestamping Mode is enabled by clearing TTM field in the CAN_MR register. Time Triggered
Mode is enabled by setting TTM field in the CAN_MR register.
• after a reset
• when the CAN controller is in Low-power Mode is enabled (LPM bit set in the CAN_MR and
• after a reset of the CAN controller (CANEN bit in the CAN_MR register)
• in Time-triggered Mode, when a message is accepted by the last mailbox (rising edge of the
• Timestamping mode: The value of the internal timer is captured at each Start Of Frame or
• Time Triggered mode: A mailbox transfer operation is triggered when the internal timer
SLEEP bit set in the CAN_SR)
MRDY signal in the CAN_MSR
each End Of Frame
reaches the mailbox trigger.
last_mailbox_number
register).
SAM9X35
SAM9X35
909
909
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