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近期在做PGA309的三温(-40°C、25°C、70°C)校准过程试验,硬件为电流环模式,使用内部TEMP ADC采样。发现一个现象:0°C以下的数据不能写入EEPROM当中,0°C以上的校准数据正常。本方案使用的硬件校准系统为PGA309EVM-USB, 软件为sboc320c。