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TCA9539 无应答及卡死问题

Other Parts Discussed in Thread: TCA9539

TCA9539的复位信号容易受到外界的干扰,没用复位RC电路时,系统总是回到初始化状态,用了复位RC电路之后,偶尔会出现卡死的状态(即不论你发什么命令给TCA9539,它都不会回应你),请问各位有没有什么建议,能帮助我解决这个问题。谢谢各位了。