ProxSense® Series IQS550-TS43 user guide (quick-start) 10x15 channel touch panel for placement on 4.3" LCD displays Introduction Integration The IQS550 is a capacitive sensing controller designed for multi-touch applications using projected capacitance touch panels. This IC is at the heart of this touch screen solution. The main features include the 4.3” Touchscreen Panel with a 3584 x 2304 resolution and up to 5 simultaneous touch coordinates. This touch panel requires a supply voltage of 1.65V to 3.6V and communicates with an I2C interface. Start by connecting the capacitive touch panel to the module board. Add a power line to the +3V3 pad and a reference ground to GND. Add 3 more lines to SCL, SDA and RDY for clock, data and ready lines. Connect these wires to a master that communicates with this I2C slave device. Add the NRST line to enable a soft reset of the IQS550, offering robust control against firmware failure. Using the NRST line is also the fastest method of autocalibrating the panel for a stable environment after LCD Operation start-up. Characteristics The module board can be mounted on a PCB The IQS550 requires a master (recommended footprint can be device for reading the following found in the IQS550-TS43 touch point data over I2C: datasheet). Alternatively the Touch ID module can be fixed using Figure 1 IQS550-TS43 Touch co-ordinates adhesive or the PCB mounting Touch strength holes while opting for the 6-way ZIF The solution can simply be powered and connector with an FFC cable for touch data read at a rate of up to about 80 communication. Hz. No special pre-configuration routines are The touch panel should only be used on 4.3” required. Example code is available within the LCD displays. To install, remove rear IQS550-TS43 data pack (“IQS550covering, ensure no residue on back of panel, TS43_datapack.zip”) to aid engineers in remove tape covering, place on display, planning program flow and possible custom remove top covering, evaluate touch adjustments. See the IQS550-TS43 performance with a custom master device or datasheet for a summary on the the Azoteq CT210 USB device. communications interface and application note AZD067 for the full details. Evaluation and debugging It is recommended to evaluate a solution User Configurable Options using the Azoteq CT210. The USB Various settings can be changed device communicates via I2C with on the IQS550 through I2C. See the module board. Use this method the example code for popular and to evaluate performance and common adjustments. For a full explore the vast amount of custom set of adjustments consult the settings available on the IQS550. IQS550 datasheet (IQS5xx-A000 The standard IQS5xx GUI may be Trackpad Datasheet). used while consulting the AZD070 Figure 2 IQS550 application note for connection and module board GUI details. Copyright © Azoteq 2013 IQS550-TS43 user guide (quick-start) v1.0 For more information visit www.azoteq.com