TSC2008-Q1 - Automotive Catalog Nano-Power Touch Screen Controller with SPI

The TSC2008-Q1 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, ultra-low 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 TSC2008-Q1 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 TSC2008-Q1 supports an SPI serial bus and data transmission. It offers programmable resolution of 8 or 12 bits to accommodate different screen sizes and performance needs.

The TSC2008-Q1 is available in a 16-pin, 4 x 4 QFN package. The TSC2008-Q1 is characterized for the –40°C to +105°C industrial temperature range.

• Qualified for Automotive Applications
• 4-Wire Touch Screen Interface
• Single 1.2V to 3.6V Supply/Reference
• Ratiometric Conversion
• Effective Throughput Rate:
  • Up to 20kHz (8-Bit) or 10kHz (12-Bit)
• Preprocessing to Reduce Bus Activity
• High-Speed SPI (up to 25MHz)
• Simple Command-Based User Interface:
  • TSC2046 Compatible
  • 8- or 12-Bit Resolution
• On-Chip Temperature Measurement
• Touch Pressure Measurement
• Digital Buffered PENIRQ
• On-Chip, Programmable PENIRQ Pull-up
• Auto Power-Down Control
• Low Power (12-Bit, 8.2kHz Eq Rate):
  • 30.4µA at 1.2V, f_SCLK = 5MHz
  • 35.5µA at 1.8V, f_SCLK = 10MHz
  • 44.6µA at 2.7V, f_SCLK = 10MHz
• Power-On, Software, and SureSet Resets
• Enhanced ESD Protection:
  • ±8kV HBM
  • ±1kV CDM
  • ±25kV Air Gap Discharge
  • ±15kV Contact Discharge
• Latch-Up Exceeds 100 mA per JESD78B - Class I
• 4 x 4 QFN-16 PackageU.S. Patent No. 6246394; other patents pending.
• APPLICATIONS
  • Multi-Screen Touch Control Systems

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