BD3375MUV-M中文资料Multiple Input Switch Monitor LSI for Automotive数据手册ROHM规格书

描述 Description

BD3375MUV-M is a 22-channel Multiple Input Switch Monitor IC that detects the opening and closing of mechanical switches. Once it senses a change in the status of a switch, it sends an interrupt signal to the MCU via a serial peripheral interface (SPI). The 22 switch inputs have two types of power supply, VPUB and VPUA. The VPUB and the VPUA power supplies can either be from a battery or from another power supply system. VPUB is the supply for the INB inputs while VPUA is for the INZ and INA inputs. BD3375MUV-M has two modes of operation, Normal and Sleep. In both modes, the internal registers can be set to make the device perform either intermittent or continuous monitoring of the switches. In intermittent monitoring, the switch status is monitored at regular time intervals, allowing the IC to operate with low power consumption. Also, operation with reduced noise can be achieved by enabling uniform sequential monitoring of all switches or sequential monitoring by power supply system.

特性 Features

·AEC-Q100 Qualified (Grade 1)
·Operational Voltage Range: 3.9V to 8V
·Uses 3.3/5.0V SPI protocol in communicating with the MCU
·Serial communication error checking through 8bit-CRC
·Thermal Shutdown Protection (TSD)
·Power on Reset (POR)
·Selectable source/sink current levels through register settings
·Wetting current timer capability
·8 source or sink input terminals
·14 source input terminals
·Separable Power Supply; VPUA: 16ch (INA&INZ), VPUB: 6ch (INB)
·Interrupt notification upon switch status change
·1 to 6 times matched LPF that eliminates input terminal noise
·Low current consumption (Intermittent monitoring)
·Status display of selected terminal at DMUX terminal

简介

BD3375MUV-M属于集成电路（IC）的专用。由制造生产的BD3375MUV-M专用该系列产品可提供所需的功能，用以将信息源/信宿连到各种复杂或范围狭窄应用中的传感器、变送器、致动器、传输介质或其他此类端点。例如，汽车安全气囊驱动器、车身控制和信息娱乐总线、自适应电缆均衡器、智能卡等等。