MSP430FR2433: Are the LVCMOS, Analog, and Power buffers in compliance to some standard interface?

Hi Thomas,

I believe "standard" as it is written just refers to the buffers on the device. It is not in reference to any particular standards body.

Regards,

Evan

Hello Evan:

Could you please have someone look into it?

Thomas,

Can you share specifics regarding what you need to know about this device's pin attributes? 

Regards,

Evan

Evan:

Specifically? Well, I've brought up this matter about the buffer types twice in other posts without an answer. So specifically, I want to know what the data sheet exactly means about those three types of buffers; therefore, the question "are these buffers in compliance to some standard" is just simply yet another angle in attempting to get an answer about what this table is trying to tell me.

The more I spend time trying to guess what the data sheet is trying to communicate, and the more time I spending reading replies which are just guesswork, the more I think the tech writer has made a mistake in what they are trying to communicate.

I can believe that buffers are built into all the I/O terminals, including the analog terminals, but not for the power terminals, since current must flow through those power terminals. Power supply terminals are regulated, not buffered; correct me if I'm wrong. So power is not a type of buffer, but it appears in this table as a type.

Earlier in the data sheet, in the Pin Attributes table, buffer type is listed as a pin attribute, and those attributes are further characterized by this Buffer Types table.

I think what the writer is trying to communicate are the "DC electrical interface characteristics" at all the terminals, not the buffer types, so that is why we see LVCMOS included as a type in this table and also in the Pin Attributes table.

We know that the term LVCMOS is typically referring to a technology, and most of the time we use it for referring to the interface to that technology. When we in the industry mention LVCMOS, it's typically in the context of DC electrical interface characteristics. JEDEC standard 8 defines those characteristics and uses LVCMOS in that context, but there is no mention of buffering.

I don't have a project which depends on the answer to these questions, but I would like somebody at TI to reconcile this matter by properly explaining why LVCMOS, Analog, and Power are listed as types of buffers?

That should be specific enough. What do you think?

By the way, I think you guys do a good job with those data sheets.

Evan:

Yes...an actual answer is not really going to matter.

Taking some time to discuss an unknown matter like this can be enough to develop our own intuition and perceptions.

Thanks for remaining candid, honest, and not taking it personally. You actually did help.

-Thomas