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Visitor II
August 3, 2026
Question

ISM330DHCX Self-test failed

  • August 3, 2026
  • 1 reply
  • 30 views

Hello,

The self-test for the ISM330DHCX failed.
What could be the cause?

I performed the self-test following the procedure in application note AN5398.
The test failed (NG) on the negative side of the Z-axis for the gyroscope function.
When measuring the I2C waveforms, the data output by the IC at registers 26h and 27h showed values ​​consistent with a self-test failure.

Incidentally, I am turning to this community because the distributor's support has been poor.

Regards,

 

 


Japanese memo
こんにちは

ISM330DHCXのセルフテストに失敗した。
原因は何が考えられるか?

アプリケーションノートAN5398の手順に沿ってセルフテストを行った。
ジャイロセンサ機能のZ軸のネガティブでNGが出た。
I2C波形を測定するとICが出力しているデータ26h、27hのデータがセルフテストNGになるような数値を出力している。


ちなみに商社の対応が悪いからこのコミュニティを頼っている。

1 reply

Federica Bossi
ST Technical Moderator
August 25, 2026

Hi ​@洋平_it ,

How many parts are failing?

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