NXP Semiconductors EVBCRTOUCH

Overview

EVBCRTOUCH from Freescale Semiconductor is an evaluation board for the Xtrinsic CRTouch capacitive and resistive touch-sensing platform, supporting four- and five-wire resistive screens plus up to four independent capacitive electrodes in a 5 × 5 mm 32-pin QFN package. It enables gesture recognition (zoom, rotate), pressure detection, UART/I²C communication, and operates from 1.8–3.6 V across –40°C to +105°C.

For engineers reviewing the EVBCRTOUCH datasheet, EVBCRTOUCH pinout, EVBCRTOUCH application, or EVBCRTOUCH equivalent, this board provides validated hardware reference, Linux/Android/PEG integration examples, configurable sampling (up to 200 pts/sec), event-driven host signaling, and dual I²C address selection-key for HMI prototyping and touch controller validation.

Technical Context

The EVBCRTOUCH implements the CRTOUCHB10VFM system controller IC as its core sensing engine, integrating resistive X/Y coordinate acquisition with pressure measurement, two-finger gesture logic (zoom/rotate angle), and four-channel capacitive electrode scanning-all synchronized via programmable sample rate and calibrated filtering. Its dual-protocol interface (UART with auto-baud detection and I²C with selectable addresses) enables direct connection to host MCUs without protocol translation.

Power management includes normal run, sleep, and shutdown modes, with dedicated reset, wakeup, and event indicator GPIOs. The board routes all critical signals-including SDA/SCL, RXD/TXD, VCC, GND, and four capacitive electrode pads-to accessible test points and headers, supporting rapid firmware validation and signal integrity analysis.

Key Specifications

Availability

EVBCRTOUCH is available at Aetrix Electronics and suitable for human-machine interface development, point-of-sale terminal prototyping, and kiosk control panel validation requiring stable component supply and full software integration support.

Supply support for EVBCRTOUCH 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

Freescale Semiconductor (now part of NXP Semiconductors) is a semiconductor leader specializing in sensor, microcontroller, and analog solutions for automotive, industrial, and consumer applications.

The Xtrinsic product line was designed to deliver intelligent, integrated sensing platforms-combining high-accuracy physical sensing, on-chip processing, and application-ready firmware-for rapid HMI and touch interface development.

FAQ

What is the primary function of the EVBCRTOUCH evaluation board?

The EVBCRTOUCH evaluation board serves as a hardware reference platform for the CRTOUCHB10VFM touch controller IC. It enables engineers to validate resistive touch screen gesture functionality (zoom, rotate), capacitive electrode configuration (keypad/slider), UART/I²C communication, and power mode behavior-accelerating firmware development and system integration for the EVBCRTOUCH platform.

Does EVBCRTOUCH support both resistive and capacitive touch sensing simultaneously?

Yes, EVBCRTOUCH supports simultaneous operation: it acquires X/Y coordinates and pressure data from four- or five-wire resistive screens while scanning up to four independent capacitive electrodes. This dual-mode capability is implemented by the CRTOUCHB10VFM IC onboard the EVBCRTOUCH board and is validated in the provided Linux/Android example code.

What communication interfaces does EVBCRTOUCH provide for host MCU connection?

EVBCRTOUCH provides UART (with auto-baud rate detection) and I²C (with two selectable slave addresses) interfaces, routed to standard 0.1″ headers. Both protocols are fully supported by the CRTOUCHB10VFM IC on the EVBCRTOUCH board and require no additional level-shifting for 1.8–3.6 V host systems.

Can EVBCRTOUCH be used for production deployment or only for evaluation?

EVBCRTOUCH is strictly an evaluation board-not qualified for production use. It provides debug headers, test points, and reference schematics to verify the CRTOUCHB10VFM IC's functionality. Production designs must use the CRTOUCHB10VFM IC directly in custom layouts; the EVBCRTOUCH board itself is not rated for long-term field operation or environmental stress.

What software resources accompany the EVBCRTOUCH evaluation board?

EVBCRTOUCH ships with no-cost GUI software and integration example code for Linux®, Android®, and PEG. These resources include drivers, calibration utilities, gesture interpretation libraries, and API documentation-all targeting the CRTOUCHB10VFM IC on the EVBCRTOUCH board and enabling rapid application-level validation.