MPR121QR2
by NXP(恩智浦)Capacitive buttons and touch surfaces can use NXP's MPR121QR2 to turn electrode changes into touch information for a host controller. The device is a capacitive-touch controller with an I²C interface, suited to control panels and embedded user interfaces. The MPR121QR2 conversion has been used by 2 ProtoFlow engineers in real designs. Its free, verified KiCad files include a 20-pin symbol, the 20-pad QFN-20_L3.0-W3.0-P0.40-BL footprint, and a 3D model for checking placement in the board assembly. Open MPR121QR2 directly in ProtoFlow to work with the symbol and footprint together.
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