UR7HCTS2-P840-FG Datasheet | SEMTECH

DESCRIPTION The Screen Coder TM PS2 is a highperformance IC that interfaces any 4 or 8-wire resistive touch screen to the standard PS/2 mouse port. Low-power and tiny, the single IC is ideal for portable systems, web phones and interactive kiosks. It offers an advanced algorithm for enhanced motion control as well as an extra port for hot-plug connection of an external PS/2 pointing device. Both the touch screen and the external device can be operated concurrently without any penalty. The UR7HCTS2-P840 is equipped with a special mand protocol that enables the touch screen to operate in either relative (mouselike) or absolute positioning mode. Because the IC interfaces via the PS/2 mouse port, it can utilize any standard mouse driver when operating in relative mode. For absolute positioning, offers a highfunctionality driver which includes inking capabilities. Mice connected to the Screen Coder TM PS2 external mouse port will always act in relative mode, even if the touch screen is operating in the absolute mode. The PS/2 munication channel is bi-directional at 10 kbps. Features - Controller & digitizer in a single IC; no need for external A/D - Interfaces ANY 4- or 8-wire resistive touch screen to standard PS/2 mouse port; regardless of size, material or vendor - High-performance IC offers accurate cursor control due to advanced algorithms - Low-power consumption, due to sophisticated power management states, ideal for battery-operated systems - Highly resistant to RF & other noise sources - Enables hot-plug connection of an external pointing device - Wheelmouse functionality is supported in the external pointing device - Other interfaces available - Embedded touch screen and external pointing device can operate concurrently with no performance penalty - Supports both absolute and relative (mouse-like) modes of operation - For relative mode, no special drivers are needed; highfunctionality driver available for absolute mode - Supports all mands defined in the IBM...