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该芯片具备编程功能:Programming Features;
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使用NCV7240可以设置菊花链;
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当CSB管脚从高到低转换时,从SO管脚中打卡的前16位将是来自故障输出寄存器的诊断输出数据,这些位表示IC的状态;
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该芯片中的command:SI SPI Input Data (16-bit serial structure of input word);
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该芯片支持串行菊花链和并行菊花链;
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该芯片支持16-bit SPI Control;
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该芯片应用于车身控制单元,汽车发动机控制单元,继电器驱动,LED驱动器和步进电机驱动器;
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Modes of Operation:UVLO mode,OFF Mode,Global OFF Mode,ON Mode,Limp Home Mode(LHI),Low lq Mode,Standby Mode,Global Standby Mode,Input Mode:
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该芯片的ON Mode,条件为SPI Control(Command 10),功能为打开输出;
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该芯片的Input Mode,条件为SPI Control(Command 01),功能为Directs output channel to be driven from INx input pins;
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该芯片的输入引脚受LHI引脚控制,当LHI=low时,默认输出引脚由INx引脚控制(通过SPI编程)
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该芯片provides two registers:Input Register. And Output Register
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Input Register. Input for IC mode state and output driver state control
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Output Register. Provides diagnostic information on the output driver condition
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SPI-Interface ;The input-frame (SI) (2 bits / channel) is used to command the output stages
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LHI该引脚上的高电平将使设备通电,并激活相应的输出驱动器INx指示器,同时禁用输出输出OUT5−OUT8.。
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如果想要点亮OUT3的LED,需要通过SPI INPUT DATA 设置ON Mode 使其channel turn on,通过Limp Home Control Circuit 时IN1接通,最后让该IC SPI OUTPUT DATA确认OUT端口的状态
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