STM32L Family - suffix chip information

IP.2 · ‎2021-10-20

I couldn't find within the data sheets whether the chip suffix, 3 or 6, which indicates temperature range, is programmed in the chip. This might help to set temperature alerts at the right level.

Does it exist?

Peter BENSCH · ‎2021-10-20

The classification of the different temperature ranges is a quality feature, not a die feature. The dies of the same type are exactly identical in the different temperature ranges, but the modules are tested differently so that a corresponding guarantee can be given.

For this reason, the temperature range cannot be read out as information from the die, but can be found in the ordering information resp. the marking.

Certainly, depending on the ordering information, you could program a corresponding firmware that takes the temperature range into account?

Regards

/Peter

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Peter BENSCH · ‎2021-10-20

The classification of the different temperature ranges is a quality feature, not a die feature. The dies of the same type are exactly identical in the different temperature ranges, but the modules are tested differently so that a corresponding guarantee can be given.

For this reason, the temperature range cannot be read out as information from the die, but can be found in the ordering information resp. the marking.

Certainly, depending on the ordering information, you could program a corresponding firmware that takes the temperature range into account?

Regards

/Peter

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.

IP.2 · ‎2021-10-21

Thanks, Peter,

Understood. In these days of chip shortage, R&D are asked to provide alternatives, so that various chips could be used inside the very same product.

It would be a production nightmare to program each chip with different firmware.

Something for ST to think about out of the box.

Anyways, it is what it is.

Thanks again