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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1133490/tca8418e-how-we-can-change-the-key-scanning-frequency
我们需要大约6-10ms 的密钥扫描频率、但我们无法在数据表中找到寄存器来更改密钥扫描时序。
如果是 TCA8418E ，是否可以更改关键扫描频率？
内部振荡器的频率不能改变。
µs 钥匙检测延迟指定为25 μ s。
