"はじめまして
PC2127Tですが、周囲温度が高くなるとウォッチドッグタイマが働いてしまうのか、正常に動作しなくなります(CLKOUTはレジスタ設定通り16kHzを出力)。
しかも、VBAT端子を電池に接続した場合とGNDに接続した場合ではその閾値が変わります。
すみませんが、推測される原因についてご教示頂けないでしょうか?
詳細は下記の通りです。
宜しくお願い致します。
<状況>
VBAT端子を電池に接続:温度の閾値が60℃
VBAT端子をGNDに接続:温度の閾値が30℃~40℃程度で、セットによってばらつく"
Nice to meet you.
Although it is PC2127T, if the ambient temperature rises, the watchdog timer may work or it will not operate normally (CLKOUT outputs 16kHz according to the register setting).
Moreover, the threshold value changes when the VBAT terminal is connected to the battery and when it is connected to GND.
Excuse me, but could you please tell me about the possible cause?
The details are as follows.
Thank you.
<Situation>
Connect VBAT terminal to battery: The temperature threshold is 60 °C.
Connect the VBAT terminal to GND: The temperature threshold is about 30 °C to 40 °C and varies depending on the set.
Could you please send your schematic?
HI
Could you please translate your questions into English?