Optimised interfaces for modern embedded systems with touch

"Compared with RS232, the I²C-based touch systems work with a very high speed of 3.4Mb/s and are extremely energy efficient with a supply voltage starting at 1.2V. The power consumption is extremely low. Therefore power supplies, batteries in handheld devices and the corresponding peripheral circuits can be very compact," commented Matthias Keller, COO, Components, Distec.

This saves space, weight and cost through reduced cooling effort and also increases the life time due to the lower heat load of all components within the system.

Another advantage of I²C is that there are no license fees required. This makes the I²C ICs significantly cheaper than USB or combined solutions. With the appropriate chip selection the costs can be reduced by another 30% without any sacrifice in functionality. On a project basis, other sizes currently up to a maximum of 24" can be implemented. For shapes, colours and logos there are virtually no restrictions, offering a complete bespoke touch screen solution.

To enable a professional and fast design-in support for the I²C hardware, Distec's engineers have already prepared several implementations for various Linux kernel versions and for Android. Appropriate driver binaries, config files and sample scripts can be provided, while adaptions to specific customer's requirements are carried out quickly and efficiently.

Distec will present the high quality touch solutions with I²C interface at stand 210 in hall 8 at SPS/IPC/DRIVES, 25th to 27th November in Nuremburg.