MPR031

Freescale Semiconductor Technical Data MPR03X Rev 2.0 11/2008 Product Preview Proximity Capacitive Touch Sensor Controller www.datasheet4u.com MPR03X OVERVIEW MPR031 MPR032 (I2C) Capacitive Touch Sensor Controller The MPR03X is an Inter-Integrated Circuit Communication driven Capacitive Touch Sensor Controller, optimized to manage two electrodes with interrupt functionality, or three electrodes with the interrupt disabled. It can accommodate a wide range of implementations due to increased sensitivity and a specialized feature set. Features 8 µA supply current with two electrodes being monitored with 64 ms response time and IRQ enabled Compact 2 x 2 x 0.65 mm 8-lead µDFN package Supports up to 3 touch pads Only one external component needed Intelligent touch detection capacity 4 µA maximum shutdown current 1.71 V to 2.75 V operation Threshold based detection with hysteresis I2C interface, with optional IRQ Multiple devices in a system allow for up to 6 electrodes (need MPR032 with second I2C address) -40°C to +85°C operating temperature range Switch Replacements Touch Pads PC Peripherals MP3 Players Remote Controls Mobile Phones Lighting Controls Bottom View 8-PIN UDFN CASE 1944 Top View SCL SDA VSS VDD 1 2 3 4 8 IRQ/ELE2 ELE1 ELE0 REXT MPR03X 7 6 5 Implementations Figure 1. Pin Connections VDD Typical Applications I²C Serial Interface INT REXT 75k SCL SDA ELE0 1 MPR03X ELE1 2 VSS VSS MPR03X with 2 Electrodes and 2 Pads OR...