位置:MC33972EW/R2 > MC33972EW/R2详情

MC33972EW/R2中文资料

厂家型号

MC33972EW/R2

文件大小

506.66Kbytes

页面数量

28

功能描述

Multiple Switch Detection Interface with Suppressed Wake-Up

数据手册

下载地址一下载地址二到原厂下载

生产厂商

MOTOROLA

MC33972EW/R2数据手册规格书PDF详情

Μultiple Switch Detection interface with Suppressed Wake-Up

The 33972 Multiple Switch Detection Interface with Suppressed Wake-Up is 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 analog input signal is buffered and provided on the AMUX output terminal for the MCU to read.

The 33972 device has two modes of operation, Normal and Sleep. Normal mode allows programming of the device and supplies switch contacts with pullup or pulldown current as it monitors switch change of state. The Sleep mode provides low quiescent current, which makes the 33972 ideal for automotive and industrial products requiring low sleep state currents.

Features

• Designed to Operate 5.5 V ≤ VPWR ≤ 26 V

• Switch Input Voltage Range -14 V to VPWR, 40 V Max

• Interfaces Directly to Microprocessor Using 3.3 V/5.0 V SPI Protocol

• Selectable Wake-Up on Change of State

• Selectable Wetting Current (16 mA or 2.0 mA)

• 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

• Active Interrupt (INT) on Change-of-Switch State

• Pb-Free Packaging Designated by Suffix Code EW

更新时间:2025-10-18 11:20:00
供应商 型号 品牌 批号 封装 库存 备注 价格
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2016+
SSOP32
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12300
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32-SOIC
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