Catalog
12-Bit, Nanopower, 4-Wire Touch Screen Controller
Key Features
• 4-Wire Touch Screen InterfaceRatiometric ConversionSingle 1.2V to 3.6V SupplyPreprocessing to Reduce Bus ActivityHigh-Speed I2C-Compatible InterfaceInternal Detection of Screen TouchRegister-Based Programmable:10-Bit or 12-Bit ResolutionSampling RatesSystem TimingOn-Chip Temperature MeasurementTouch Pressure MeasurementAuto Power-Down ControlLow Power:760µW at 1.8V, 50SSPS580µW at 1.6V, 50SSPS285µW at 1.2V, 50SSPS74µW at 1.6V, 8.2kSPS Eq. Rate47µW at 1.2V, 8.2kSPS Eq. RateEnhanced ESD Protection:±8kV HBM±1kV CDM±25kV Air Gap Discharge±12kV Contact Discharge2.5 x 2.5 WCSP-18 and 4 x 4 QFN-20 PackageAPPLICATIONSCellular PhonesPortable InstrumentsMP3 Players, PagersMultiscreen Touch ControlU.S. Patent No. 6,246,394; other patents pending.I2C is a trademark of NXP Semiconductors.All other trademarks are the property of their respective owners4-Wire Touch Screen InterfaceRatiometric ConversionSingle 1.2V to 3.6V SupplyPreprocessing to Reduce Bus ActivityHigh-Speed I2C-Compatible InterfaceInternal Detection of Screen TouchRegister-Based Programmable:10-Bit or 12-Bit ResolutionSampling RatesSystem TimingOn-Chip Temperature MeasurementTouch Pressure MeasurementAuto Power-Down ControlLow Power:760µW at 1.8V, 50SSPS580µW at 1.6V, 50SSPS285µW at 1.2V, 50SSPS74µW at 1.6V, 8.2kSPS Eq. Rate47µW at 1.2V, 8.2kSPS Eq. RateEnhanced ESD Protection:±8kV HBM±1kV CDM±25kV Air Gap Discharge±12kV Contact Discharge2.5 x 2.5 WCSP-18 and 4 x 4 QFN-20 PackageAPPLICATIONSCellular PhonesPortable InstrumentsMP3 Players, PagersMultiscreen Touch ControlU.S. Patent No. 6,246,394; other patents pending.I2C is a trademark of NXP Semiconductors.All other trademarks are the property of their respective owners
Description
AI
The TSC2004 is a very low-power touch screen controller designed to work with power-sensitive, handheld applications that are based on advanced low-voltage processors. It works with a supply voltage as low as 1.2V, which can be supplied by a single-cell battery. It contains a complete, ultralow-power, 12-bit, analog-to-digital (A/D) resistive touch screen converter, including drivers and the control logic to measure touch pressure.
In addition to these standard features, the TSC2004 offers preprocessing of the touch screen measurements to reduce bus loading, thus reducing the consumption of host processor resources that can then be redirected to more critical functions.
The TSC2004 supports an I2C serial bus and data transmission protocol in all three defined modes: standard, fast, and high-speed. It offers programmable resolution of 10 or 12 bits to accommodate different screen sizes and performance needs.
The TSC2004 is available in a miniature, 18-lead, 5 x 5 array, (2.554 ±0.54)mm x (2.554 ±0.54)mm wafer chip-scale package (WCSP), and a 20-pin, 4 x 4 QFN package. Both packages are characterized for the -40°C to +85°C industrial temperature range.
The TSC2004 is a very low-power touch screen controller designed to work with power-sensitive, handheld applications that are based on advanced low-voltage processors. It works with a supply voltage as low as 1.2V, which can be supplied by a single-cell battery. It contains a complete, ultralow-power, 12-bit, analog-to-digital (A/D) resistive touch screen converter, including drivers and the control logic to measure touch pressure.
In addition to these standard features, the TSC2004 offers preprocessing of the touch screen measurements to reduce bus loading, thus reducing the consumption of host processor resources that can then be redirected to more critical functions.
The TSC2004 supports an I2C serial bus and data transmission protocol in all three defined modes: standard, fast, and high-speed. It offers programmable resolution of 10 or 12 bits to accommodate different screen sizes and performance needs.
The TSC2004 is available in a miniature, 18-lead, 5 x 5 array, (2.554 ±0.54)mm x (2.554 ±0.54)mm wafer chip-scale package (WCSP), and a 20-pin, 4 x 4 QFN package. Both packages are characterized for the -40°C to +85°C industrial temperature range.
