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XPT2046 Touch Screen Controller - TSSOP16
Technical Datasheet [PDF]
The XPT2046 is a 4-wire resistive touch screen controller that incorporates a 12-bit 125 kHz sampling SAR type A/D converter. It operates down to 2.2V supply voltage and supports digital I/O interface voltage from 1.5V to VCC in order to connect low voltage uP.
XPT2046 can detect the pressed screen location by performing two A/D conversions. In addition to location, it also measures touch screen pressure.On-chip VREF can be utilized for analog auxiliary input, temperature measurement and battery monitoring withthe ability to measure voltage from 0V to 5V. XPT2046 also has an on-chip temperature sensor