TSC2046E-Q1

TSC2046E-Q1 www.ti.com LOW-VOLTAGE I/O TOUCH SCREEN CONTROLLER Check for Samples: TSC2046E-Q1 SBAS510 – JUNE 2010 FEATURES 1 234 Qualified for Automotive Applications Same Pinout as ADS7846 2.2-V to 5.25-V Operation 1.5-V to 5.25-V Digital I/O Internal 2.5-V Reference Direct Battery Measurement (0 V to 6 V) On-Chip Temperature Measurement Touch-Pressure Measurement QSPI™ and SPI™ 3-Wire Interface Auto Power-Down Exceeds IEC 61000-4-2 ESD Requirements – ±15kV Contact Discharge – No External Components Needed Available In a TSSOP-16 (PW) Package APPLICATIONS Touch Screen Monitors +V CC X+ Y+ X– Y– GND V BAT AUX PW PACKAGE (TOP VIEW) 1 16 2 15 3 14 4 13 5 12 6 11 7 10 89 DCLK CS DIN BUSY DOUT PENIRQ IOVDD V REF DESCRIPTION The TSC2046E is the next-generation version of the ADS7846 4-wire touch screen controller, supporting a low-voltage I/O interface from 1.5 V to 5.25 V. The TSC2046E is 100% pin-compatible with the existing ADS7846, and drops into the same socket. This design allows for an easy upgrade of current applications to the new version. The TSC2046E also has an on-chip 2.5-V reference that can be used for the auxiliary input, battery monitor, and temperature measurement modes. The reference can also be powered down when not used to conserve power. The internal reference operates down to a supply voltage of 2.7 V, while monitoring the battery voltage from 0 V to 6 V. The low power consumption of less than 0.75 mW (typ) at 2.7 V (referen...