TL16C752B-EP: About Description of "TL16C752B".

Pokkun

Part Number: TL16C752B-EP

Hi, team.

Could you please let me know about "required delay" on baudrate.

Compare with TL16C752B(SLLS405C), TL16C752B(SLLS405A) and TL16C752-EP(SGLS153B), required delay time on 115kbps is different.

I guess 0.5us is correct relay time on TL16C752B(SLLS405C), right?

Device：TL16C752B

Reference of "SLLS405C –DECEMBER 1999–REVISED JUNE 2010" p22

Device：TL16C752B

Reference of "SLLS405A – DECEMBER 1999 – REVISED AUGUST 2000" p22

Device：TL16C752B-EP

Reference of "SGLS153B –FEBRUARY 2003–REVISED DECEMBER 2007" p23

Best regards,

Masumi Sekiguchi

over 5 years ago

0 Wade Vonbergen over 5 years ago

TI__Guru 62930 points

Thank you for pointing this out.
You are correct, the SLLS405C would be the correct values.

The EP version suffers and issue with tranlation when the datasheet was created. In a very unfortunate translation problem, the micro symbol translates to an "m". This makes all the micro seconds milliseconds. Fortunately, the column head included the micro symbol.

Also, as you inferred the correct value for 115200, the delay should be 0.8uS.
I will get this in queue for update.

If this answers your question, please click "Verify it as the answer"
Regards,
Wade

0 Pokkun over 5 years ago in reply to Wade Vonbergen

Genius 4695 points

Thank you for contacting.

The conclusion is....

Device：TL16C752B-EP

・Which value is it correct in this device data sheet?

　(0.5 or 0.8)

・Which is it the unit in this device data sheet?

　(m or u)

Best regards.

0 Wade Vonbergen over 5 years ago in reply to Pokkun

TI__Guru 62930 points

Pokkun,

I expected that the 0.8uS is correct, as the commercial datatsheet was updated to reflect this.

However, mathematically, the delay should be 0.5uS based on all the other timing relationships. I will need to research this.

Conservatively, 0.8uS can be used.

For all the mS in the table, they should be uS. The conversion changed the micro symbol to an m erroneously.

I will reply back with if confirmation on 0.8 or 0.5 for the 115200 delay.

Regards,

Wade

0 Pokkun over 5 years ago in reply to Wade Vonbergen

Genius 4695 points

You said below.
> I will need to research this.

After all, which value is this spec 0.5 or 0.8?

0 Wade Vonbergen over 5 years ago in reply to Pokkun

TI__Guru 62930 points

Pokkun,
I was not able to find any information on why it was changed from 0.5uS to 0.8uS. I believe this to be a typo in the commercial datasheet.
Based on the fact that the delay is 1/16th of the baud rate for all other rates, this supports that it is a typo.
Architecturally, the internal clock runs at 16x the baud rate. This explains that the delay is up to one additional internal clock.
Please use 0.5uS as appropriate delay for 115200 baud.

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TL16C752B-EP: About Description of "TL16C752B".