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TMP451-Q1: therm 引脚 恢复 高低电平

Part Number: TMP451-Q1

hi TI expert,

我们遇到一个问题:步骤如下:

1、高温上电,range = 0,0x00 寄存器回读大于 0x55  ( 0x 85 ),0x01寄存器回读大于0x6e (0xaa) ;

2、根据以上情况,会出现therm 拉低的情况,正常现象;

3、MCU去 配置range=1, 0x19 / 0X20 = B3, 但是therm pin 一直没有拉高,状态寄存器 0x02 回读0x92 / 0x12, 持续 约 几十秒后,therm pin 才拉高,请问是什么原因导致 therm 拉高这么慢呢?