NXP Semiconductors KITMPR083EVM

Overview

KITMPR083EVM from NXP Semiconductors (formerly Freescale) is an evaluation module designed to accelerate development of proximity capacitive touch interfaces using the MPR083 8-position rotary capacitive touch sensor controller. It supports I²C communication, real-time auto-calibration, piezo sounder feedback, and EMI-robust operation across -40°C to +85°C. The board enables rapid validation of rotary slider implementations in appliance control panels and portable electronics.

For engineers reviewing the KITMPR083EVM datasheet, KITMPR083EVM pinout, KITMPR083EVM application, or KITMPR083EVM equivalent, this module provides full hardware access to the MPR083's ATTN, IRQ, SCL/SDA, SOUNDER, and eight electrode inputs - enabling functional verification, firmware integration, interrupt behavior tuning, and sounder timing characterization without custom PCB design.

Technical Context

The KITMPR083EVM implements the MPR083Q (16-lead QFN) and/or MPR083EJ (16-lead TSSOP) IC in a ready-to-use layout with all required passive components: eight 780 kΩ electrode pull-ups, 1 µF VDD–VSS bypass capacitor, and 4.7 kΩ IRQ pull-up. It exposes all critical signals-including AD0 for dual-device I²C addressing-and provides direct access to the piezo sounder driver output.

Board-level design includes dedicated test points for ATTN, IRQ, SCL, SDA, and each electrode (E1–E8), plus onboard jumpers for VDD selection (1.8 V–3.6 V), sounder enable/disable, and IRQ polarity configuration. The module operates in all four MPR083 modes (Run1/Run2/Stop1/Stop2), with ATTN pin functionality fully implemented to support duty-cycled low-power evaluation.

Key Specifications

Availability

KITMPR083EVM is available at Aetrix Electronics and suitable for appliance control panels, PC peripheral HMI development, and access control interface prototyping requiring stable component supply and immediate hardware validation capability.

Supply support for KITMPR083EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors acquired Freescale Semiconductor in 2015 and maintains legacy product support, documentation, and design resources for the MPR08X family of capacitive touch controllers.

The KITMPR083EVM belongs to NXP's human interface evaluation platform portfolio, specifically engineered to de-risk adoption of capacitive rotary sliders in cost-sensitive, EMI-challenged consumer and industrial applications.

FAQ

What is the primary function of the KITMPR083EVM?

The KITMPR083EVM is an evaluation module for the MPR083 capacitive touch sensor controller, providing a complete, tested hardware platform to develop and validate 8-position rotary slider interfaces. It includes all necessary passives, test points, and configuration options to evaluate the KITMPR083EVM's I²C communication, interrupt behavior, sounder feedback, and low-power modes without custom PCB design.

Does the KITMPR083EVM support both QFN and TSSOP versions of the MPR083?

Yes - the KITMPR083EVM is designed to accommodate either the MPR083Q (16-lead QFN, case 1679) or MPR083EJ (16-lead TSSOP, case 948F), as confirmed by Freescale's official evaluation board documentation and schematic. Both packages share identical pin functions and are socket-compatible on the KITMPR083EVM board.

How is the ATTN pin used on the KITMPR083EVM?

On the KITMPR083EVM, the ATTN pin is fully implemented to allow external assertion of the MPR083's Duty Cycle Enable (DCE) bit. This enables transition from Run2 or Stop2 modes into Run1 or Stop1 - a mandatory step before I²C communication in duty-cycled operation. The board provides direct access to ATTN via test point and optional jumper control.

Can the KITMPR083EVM generate audible feedback during touch events?

Yes - the KITMPR083EVM includes a dedicated push-pull SOUNDER output that drives external piezoelectric elements. When enabled via the MPR083's Rotary Sounder Enable (RSE) bit and configured through the Sounder Configuration Register, the KITMPR083EVM delivers key-click feedback synchronized to rotary touch detection without requiring additional driver circuitry.

What power supply requirements does the KITMPR083EVM have?

The KITMPR083EVM accepts 1.8 V to 3.6 V DC input, matching the MPR083's native operating range. It includes onboard voltage selection jumpers and supports direct connection to standard lab supplies or host system rails. The board implements the recommended 1 µF VDD–VSS bypass capacitor and 4.7 kΩ IRQ pull-up per Freescale's reference design for the KITMPR083EVM.