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Touch Controllers
SSD2521 Capacitive Touch Screen Controller
Unlike resistive, the capacitive touch panel requires a controller to compute and transform the touch signal to a simple data format for the system. To fulfil the market needs. Solomon Systech presents SSD2521, a Capacitive Touch Panel Controller with multi-touch support.
SSD2521 is an all-in-one capacitive touch panel controller that integrates the power circuits, panel driving and sensing circuits, high resolution ADC, signal processor and finger tracking unit into a single chip. It can drive capacitive touch panel with channel numbers up to 21 driving and 12 sensing.
SSD2521 has implemented several arithmetic algorithms for finger extraction and tracking. It can track up to a maximum 4 fingers concurrently and report to user the absolute coordinate of each finger. In addition, it can detect incidents and events based on the tracked finger coordinates.
| Description | Part Number |
| Capacitive Touch Screen Controller | SSD2521 |
Features
- High Voltage Driving Signal for better sensing performance
- On-Chip DC-DC Converter
- 21 Driving and 12 Sensing Pins support touch panel with
33 Channels max. - Support 640 x 352 Touch Resolution and capable of supporting
up to WVGA Panel - Support 200Hz1 max. Scan Rate
- Support Multi Touch Application with Max. 4 points
- Support 5 Types Touch Event Report
- Support Automatic Scan Rate Control for Power Saving
- Support Auto Calibration
- Embedded Noise Rejection Correlator for better SNR
- Support I2C with Data Rate up to 400Kbits
- Package : 68/48 Pins QFN
Need to know more
Anglia Displays is able to provide extensive technical support and advice during your assessment and design-in of LCDs. We can also provide starter kits, evaluation boards and reference platforms to enable you to fast track the introduction of your end product. Click here for more information
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