Technical content and expertise to help jump start your design and get you to production faster.
Start your designDownload our latest development and embedded software solutions.
Expedite time-to-market with our extensive lineup of development kits.
Jump-start your design with proven hardware and software solutions.
Get the latest specifications in our technical documentation library.
Further your technical expertise with online and in-person instruction.
Get comprehensive paid support to fast-track your product development.
Design ideas, demo videos, quality answers. Connect with NXP professionals and other knowledgeable designers ready to help.
Software, documentation, evaluation tools. The resources to build comprehensive solutions and accelerate your time to market.
Access our design resource libraryWe're always looking for passionate and talented people to work with us.
Join our teamThe CD1020 is a cost-optimized switch detection interface device (MSDI) designed to detect the closing and opening of up to 22 switch contacts. The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI). This SMARTMOS device also features a 22-to-1 analog multiplexer for reading the input channels as analog inputs. The analog selected input signal is buffered and provided on the AMUX output pin for the MCU to read.
The CD1020 device has two modes of operation, Normal and Low-power mode (LPM). Normal mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors the change of state on the switches. The LPM provides low quiescent current, which makes the CD1020 ideal for automotive and industrial products requiring low sleep-state currents.
The low-cost MSDI is available in high power, space-saving wettable flank 5x5mm QFN package.
Evaluation and Development Boards