Touch-sensor controller integrates sounder drive and I²C configuration

The MPR083/4 proximity capacitive touch-sensor controllers are designed to detect the state of capacitive touch pads.

Freescale Semiconductor’s MPR083 and MPR084 offer designers a cost-efficient alternative to mechanical rotary switches and mechanical push switches respectively.

An I²C interface is included to communicate with a host to configure the operation, and an interrupt advises the host of status changes. The MPR083/4 also include a piezo-sounder drive which provides audible feedback to simulate mechanical key clicks.

The MPR08X family will have several implementations, including control panels and switch replacements. The MPR083 controls rotary and linear sliders, whilst the MPR084 controls up to eight touch pads.

 

FEATURES 1.8V - 3.6V operation 41µA average supply current (1s response time) 2µA standby current Support for 8-position rotary interface (MPR083) Support for 8-touch pads (MPR084) Proprietary false-touch rejection technology On-going pad analysis and detection that is not reset by EMI events 16-pin QFN and TSSOP packages Operating temperature range: -40°C to 85°C

APPLICATIONS Appliances PC peripherals Access controls MP3 players and portable consoles Remote controls Mobile phones

 

 

The KITMPR084EVM and KITMPR083EVM are available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Freescale Semiconductor / MPR083/4