MC33975A Description
Freescale Semiconductor Technical Data Document order number: MC33975 Rev 4.0, 08/2005 Multiple Switch Detection Interface with Suppressed Wake-Up and 32mA Wetting Current Freescale offers multiple Switch Detection Interface Devices. The 33975 Multiple Switch Detection Interface with Suppressed Wake-Up is designed to detect the closing and opening of up to 22 switch contacts.
MC33975A Key Features
- Designed to Operate 5.5 V ≤ VPWR ≤ 28 V Device
- Switch Input Voltage Range -14 V to VPWR MC33975EK/R2
- Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI Protocol PC33975AEK/R2
- Selectable Wake-Up on Change of State
- Selectable Wetting Current (32 mA or 4.0 mA for switch-to-ground inputs)
- 8 Programmable Inputs (Switches to Battery or Ground)
- 14 Switch-to-Ground Inputs
- VPWR Standby Current 100 µA Typical, VDD Standby Current 20 µA Typical
- Pb-free 32-terminal suffix EK
- This document contains certain information on a new product. Specifications and information herein are subject to change