STATUS_REG of the ASM330LHH

ggob · ‎2025-08-25

How long does the TDA bit in the STATUS_REG of the ASM330LHH remain “1”?
Is the TDA bit itself a latch type and remains “1” until the temperature output register (OUT_TEMP_H/L, 21h/20h) is read?

Federica Bossi · ‎2025-08-28

Hi @ggob,

TDA bit remains set (logic “1”) until the temperature output registers are read by the host. Once the temperature registers are read, the TDA bit is automatically cleared by the device to “0” until the next new temperature data is available.

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Federica Bossi · ‎2025-08-28

Hi @ggob,

TDA bit remains set (logic “1”) until the temperature output registers are read by the host. Once the temperature registers are read, the TDA bit is automatically cleared by the device to “0” until the next new temperature data is available.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.

ggob · ‎2025-08-28

Thank you very much. It is very helpful.
If the TDA bit is not set to “1” even once after 400ms has passed after the sensor is turned on, is it likely that the startup has failed?