AP3861

Preliminary Datasheet Superior Multi-touch Capacitive Touch Screen Controller AP386X General Description The AP386X is a low-cost high-resolution single chip solution for APA (All point addressable) capacitive touch screen. It is an 8-bit single cycle 8051 microcontroller with ICP Interface. The chip includes 12-bit successive approximation analog-to-digital converters with an I2C interface and multiplexer-switcher circuits for flexible measurement of analog signal from APA panel. An accurate switched-capacitor integrator is built-in and it can auto calibrate the pixel parameters for a wide range of capacitance on the touch screen (1pF to 32pF). This touch screen controller (TSC) with CMOS integration circuit provides an ideal choice for APA touch panel. The AP386X is specified over the temperature range of -40°C to 85°C. The AP386X is available in QFN-5×5-40 (for AP3860) and QFN-6×6-48 (for AP3861) packages. Features Mutual Capacitive Touch Sensing Single Power Supply: 2.8V to 3.6V Operation Voltage; LDO inside to Support 1.6V to 2.0V Operation Voltage Up to 17/23 Drive Lines and 10/12 Sense Lines Charge Pump Support up to 6V, Doubling SNR Internal Two-wire Serial Control Bus I2C Single-end Integrator with Programmable Gain Control Multiplexed Analog Digitization with 12-bit Resolution Scan SAR ADCs and Its Dedicated 2X to 8X Accumulator XSRAM Buffers Features (Continued) Single Cycle 8051 CPU Core, Maximum Operating Clock up to 28MHz from IOSC (Zero Wai...