BUF16821-Q1: application questions

user4782171

Part Number: BUF16821-Q1

Hi Team,

Here have BUF16821-Q1 application questions that need your help for it as follows:

1. The timing spec of OUT1~OUT and VOCM has the output after VS applied?

2. In 7.3.6 DIE_ID and DIE_REV Registers spec. Can't catch this one Ex. How to set Die_ID and Die_REV? How to determine, design, and setting the Rev A die to Rev B die?

3. The device has 16x rewrite capability of the nonvolatile memory. Does it means the rewrite life times are 16 for this part or others?

Best regards,

Albert Lee.

over 7 years ago

0 Shinya Morita over 7 years ago

TI__Mastermind 44835 points

Hi,

I have notified our expert regarding this request. Please expect a response by July 25th

regards

Shinya Morita

0 Costin Cazana over 7 years ago

TI__Expert 4940 points

Hi Albert,

1. All DAC's timing are valid after Vs applied. DAC's need Vs in order to set the desired voltage

2. DIE_ID and DIE_REV are read only register, these are numbers assigned to the part and silicon revision.

3. Each EEPROM register can be rewrite up to 16 times

Regards,
Costin

0 user4782171 over 7 years ago in reply to Costin Cazana

TI__Intellectual 1560 points

Hi Costin,

Thanks.
1. Have the detail time spec of the timing sequqnce from Vs applied to has OUT1~OUT15 and VCOMs output?

2. For DIE_ID and DI_REV question. As spec description in 7.3.6 DIE_ID and DIE_REV Registers spec, what conditon and causes to determine and change the IC Die revision to B from A...etc.

Best regards,
Albert Lee.

0 Costin Cazana over 7 years ago in reply to user4782171

TI__Expert 4940 points

Hi Albert,

Let me check it and get back to you.

Regards,

Costin

0 Costin Cazana over 7 years ago in reply to user4782171

TI__Expert 4940 points

Hi Albert,

1. The delay between Vs turn on and Outx is very small, it is masked by Vs supply turn on slew rate.

After power on or reset, Outx voltage is the memory voltage or 0.5*Vs if no non-volatile register has been program .

You can see in the attached scope picture that Voutx turns on almost at the same time as Vs

2. DI_ID and DI_REV are read only registers, can not write to them . Reg 3Dhex returns the part number and Reg3Chex returns part revision

Regards,

Costin

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BUF16821-Q1: application questions