thanks for your interest and to bring up the topics. I would like to provide some
additional information on that.
The document you mention is a datasheet, which only contains basic information. Some
sections in particular to the integrated firmware is not included in the datasheet,
because it is described in the full Databook document. You can get the databook via your
distributor, who will grant you access on an Infineon portal for the distribution of such
documents. There you will find also more recent documents from 2019.
1.1 Power management
In chapter 4.3 of the document you can find another sleep mode, which is activated when
CS# pin is inactive. This is an explicit power-down or standby mode that can be activated
by the user. The very low current consumption shows, that in this mode almost everything
inside the TPM is deactivated to reduce the power consumption to a very low value.
4.2 Functional Operational Range
The SLB 9670 is the consumer variant of TPM, so therefore the lifetime is similar to
consumer devices, which also have a much more limited lifetime (e.g. PC, workstation,
tablet). There are other TPM variants for industrial - SLM 9670 - and for automotive -
SLI 9670 -. The industrial SLM 9670 has a lifetime for 20 years, see
The datasheet is in the top right corner.
I hope this helps to clarify these topics.