An external reference can also be applied and varied from 1 V to +VCC, with an analog input range of 0 V to VREF.是什么意思_An external reference can also be applied and varied from 1 V to +VCC, with an analog input range of 0 V to VREF.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句