SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 919
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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
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41.6.7
41.6.8
41.7
41.7.1
11053B–ATARM–22-Sep-11
Touchscreen
Comparison Window
ADC Timings
Touchscreen Mode
usingthe internal timer (ADC_TRGR register) . The periodic acquisition of several samples can
be processed automatically without any intervention of the processor thanks to the DMA .
The sequence can be customized by programming the Sequence Channel Registers,
ADC_SEQR1 and ADC_SEQR2 and setting to 1 the USEQ bit of the Mode Register (ADC_MR).
The user can choose a specific order of channels and can program up to 12 conversions by
sequence. The user is totally free to create a personal sequence, by writing channel numbers in
ADC_SEQR1 and ADC_SEQR2. Not only can channel numbers be written in any sequence,
channel numbers can be repeated several times. Only enabled sequence bitfields are con-
verted, consequently to program a 15-conversion sequence, the user can simply put a disable in
ADC_CHSR[15], thus disabling the 16THCH field of ADC_SEQR2.
Note:
The ADC Controller features automatic comparison functions. It compares converted values to a
low threshold or a high threshold or both, according to the CMPMODE function chosen in the
Extended Mode Register (ADC_EMR). The comparison can be done on all channels or only on
the channel specified in CMPSEL field of ADC_EMR. To compare all channels the CMP_ALL
parameter of ADC_EMR should be set.
The flag can be read on the COMPE bit of the Interrupt Status Register (ADC_ISR) and can trig-
ger an interrupt.
The High Threshold and the Low Threshold can be read/write in the Comparison Window Regis-
ter (ADC_CWR).
If the comparison window is to be used with LOWRES bit in ADC_MR set to 1, the thresholds do
not need to be adjusted as adjustment will be done internally. Whether or not the LOWRES bit is
set, thresholds must always be configured in consideration of the maximum ADC resolution.
Each ADC has its own minimal Startup Time that is programmed through the field STARTUP in
the Mode Register, ADC_MR.
A minimal Tracking Time is necessary for the ADC to guarantee the best converted final value
between two channel selections. This time has to be programmed through the TRACKTIM bit
field in the Mode Register, ADC_MR.
Warning: No input buffer amplifier to isolate the source is included in the ADC. This must be
taken into consideration to program a precise value in the TRACKTIM field. See the product
ADC Characteristics section.
The TSMODE parameter of “ADC Touchscreen Mode Register” is used to enable/disable the
Touchscreen functionality, to select the type of screen (4-wire or 5-wire) and, in the case of a 4-
wire screen, to activate (or not) the pressure measurement.
In 4-wire mode, channel 0, 1, 2 and 3 must not be used for classic ADC conversions. Likewise,
in 5-wire mode, channel 0, 1, 2, 3, and 4 must not be used for classic ADC conversions.
The reference voltage pins always remain connected in normal mode as in sleep mode.
SAM9G35
919
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