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用了TXB0101在3.6V的外部模块和3.3V的MCU之间,但是只能接收到第一个起始脉冲

Other Parts Discussed in Thread: TXB0101

用了TXB0101在3.6V的外部模块和3.3V的MCU之间,但是只能接收到第一个起始脉冲(正常的话,3.3端发出一个低电平脉冲,3.6端反馈数据,目前只看到3.6端只有一个脉冲)