SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 966
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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: 966 of 1145
- Download datasheet (26Mb)
Figure 42-2. Sequence of ADC conversions
42.6.2
42.6.3
42.6.4
966
966
(Hard or Soft)
Trigger event
ADC_Start
ADCClock
ADC_SEL
ADC_ON
ADC_eoc
SAM9X25
SAM9X25
Conversion Reference
Conversion Resolution
Conversion Results
DRDY
LCDR
The conversion is performed on a full range between 0V and the reference voltage pin ADVREF.
Analog inputs between these voltages convert to values based on a linear conversion.
The ADC supports 8-bit or 10-bit resolutions. The 8-bit selection is performed by setting the
LOWRES bit in the ADC Mode Register (ADC_MR). By default, after a reset, the resolution is
the highest and the DATA field in the data registers is fully used. By setting the LOWRES bit, the
ADC switches to the lowest resolution and the conversion results can be read in the lowest sig-
nificant bits of the data registers. The two highest bits of the DATA field in the corresponding
ADC_CDR register and of the LDATA field in the ADC_LCDR register read 0.
When a conversion is completed, the resulting 10-bit digital value is stored in the Channel Data
Register (ADC_CDRx) of the current channel and in the ADC Last Converted Data Register
(ADC_LCDR). By setting the TAG option in the ADC_EMR, the ADC_LCDR presents the chan-
nel number associated to the last converted data in the CHNB field.
The channel EOC bit in the Status Register (ADC_SR) is set and the DRDY is set. In the case of
a connected DMA channel, DRDY rising triggers a data transfer request. In any case, either
EOC and DRDY can trigger an interrupt.
Reading one of the ADC_CDR registers clears the corresponding EOC bit. Reading ADC_LCDR
clears the DRDY bit and EOC bit corresponding to the last converted channel.
(and tracking of CH0)
CH0
Start Up Time
Conversion of CH0
CH0
CH1
Tracking of CH1
Conversion of CH1
CH2
CH1
Tracking of CH2
11054A–ATARM–27-Jul-11
11054A–ATARM–27-Jul-11
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