TMP451: how to change the device address of 4Ch

Richard Yang1

Part Number: TMP451
Other Parts Discussed in Thread: , TMP461, LM90

Hi team:

since there is conflict on BUS address with other devices, customers need us provide the version of Non 4Ch address for TMP451, so how we meet this request, thanks very much!

over 3 years ago

0 David Vaseliou over 3 years ago

TI__Expert 6820 points

Hi Richard,

The TMP451 only has 1 address. The automotive version (TMP451-Q1) has 3 different factory programmed addresses. You may also want to look at the TMP461 which is similar to TMP451, but has two address pins to change the device address.

Thanks,

David

0 Richard Yang1 over 3 years ago in reply to David Vaseliou

TI__Intellectual 1120 points

Hi David:

Glad to get your suggestion.

One more question here, if customer changes to TMP451Q series from TMP451, so the driver shall be the same, right? because the previous version is used by TMP451, The Linux driver is lm90.c. Just make a final verification, thanks!

0 David Vaseliou over 3 years ago in reply to Richard Yang1

TI__Expert 6820 points

Hi Richard,

The TMP451 and TMP451-Q1 are software compatible they would just need to change the I2C address. The lm90 linux driver does look to support TMP451.

Thanks,

David

0 Richard Yang1 over 3 years ago in reply to David Vaseliou

TI__Intellectual 1120 points

Hi David:

Got it, thanks!

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TMP451: how to change the device address of 4Ch