SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 913

• Manufacturer Part Number: SAM9G45
• Manufacturer: Atmel Corporation

Specifications of SAM9G45

• 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: No
• 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

40. Touch Screen ADC Controller (TSADCC)
40.1
40.2
6438G–ATARM–19-Apr-11
Description
Embedded Characteristics
The Touch Screen ADC Controller is based on a Successive Approximation Register (SAR) 10-
bit Analog-to-Digital Converter (ADC). It also integrates:
The conversions extend from 0V to TSADVREF.
The TSADCC supports an 8-bit or 10-bit resolution mode, and conversion results are reported in
a common register for all channels, as well as in a channel-dedicated register.
Conversions can be started for all enabled channels, either by a software trigger, by detection of
a rising edge on the external trigger pin TSADTRG or by an integrated programmable timer.
When the Touch Screen is enabled, a timer-triggered sequencer automatically configures the
power switches, performs the conversions and stores the results in dedicated registers.
The TSADCC also integrates a Sleep Mode and a Pen-Detect Mode and connects with one
PDC channel. These features reduce both power consumption and processor intervention.
The TSADCC timings, like the Startup Time and Sample and Hold Time, are fully configurable.
• a 8-to-1 analog multiplexer for analog-to-digital conversions of up to 8 analog lines
• 4 power switches that measure both axis positions on the resistive touch screen panel
• 1 additional power switch and an embedded resistor that detects pen-interrupt and pen loss
• 8-channel ADC
• Support 4-wire resistive Touch Screen
• 10-bit 384 Ksamples/sec. Successive Approximation Register ADC
• -3/+3 LSB Integral Non Linearity, -2/+2 LSB Differential Non Linearity
• Integrated 8-to-1 multiplexer, offering eight independent 3.3V analog inputs
• External voltage reference for better accuracy on low voltage inputs
• Individual enable and disable of each channel
• Multiple trigger sources
• Sleep Mode and conversion sequencer
– Hardware or software trigger
– External trigger pin
– Automatic wakeup on trigger and back to sleep mode after conversions of all
enabled channels
SAM9G45
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