The Evaluation Kit features the 33975 a multiple switch detection interface with suppressed wake-up 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). The device also features a 22-to-1 analog multiplexer for reading inputs as analog.
The 33975 device has two modes of operation, Normal and Sleep. Normal Mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors the switch change of state. The Sleep Mode provides low quiescent current, which makes the 33975 ideal for automotive and industrial products requiring low sleep state currents. Improvements are a programmable interrupt timer for Sleep Mode that can be disabled, switch detection currents of 32mA and 4.0mA for switch-to-ground inputs, and an interrupt bit that can be reset.
This Evaluation kit may be used with the KITUSBSPIDGLEVME.
|Get Started with the KIT33975AEWEVBE Evaluation Board|
Everything you need to get started with the KIT33975AEWEVBE
Everything you need to get started with the KIT33975AEWEVBE Evaluation Board
MC33975, MC9375A, Multiple Switch Detection Interface with Suppressed Wake-up and 32 mA Wetting Current - Data Sheet
Provides electrical characterization, packaging and application information.
Type: Data Sheets Format: pdf Size: 657K
MC33975FS, Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current
Contains a brief product description.
Type: Fact Sheets Format: pdf Size: 172K
KIT33975AEVB, Evaluation Board - User Guide
Describes kit contents, set up, BOM and schematics.
Type: Users Guides Format: pdf Size: 677K
KIT33975A SPIGEN Configuration File
Configuration file for use with SPIGEN software
Type: Evaluation/Development Boards and Systems Vendor: NXP
KTSPIGENSIUG, Installation Notes for SPIGen
Describes the USB to SPI Interface Evaluation Board - Installation Notes for SPIGen
Type: Users Guides Format: pdf Size: 222K
KTSPIGENHELPUG, SPIGen Help Instructions
SPIGen Help Instructions
Type: Users Guides Format: pdf Size: 304K
USB Additions to SPIGen
USB Additions to SPIGen
Type: Users Guides Format: pdf Size: 162K
SPI Generator (SPIGen) Software
Web site used to download the latest version of he SPIGEN software.
Type: Embedded Components Vendor: NXP
Gerber files for the KIT33975AEWEVBE Evaluation boards
Contains drill files, pcb layers/layout, silk screens, etc. (unZip with WinZip)
Type: Printed Circuit Boards and Schematics Vendor: NXP