DRV10983: When EEPROM writing voltage is insufficient

Shinichi Inoue

Guru 19671 points

Part Number: DRV10983

Dear Specialists,

My customer is considering DRV10983 and has a question about programming voltage,

I would be grateful if you could advise.

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I have a question about writing to the EEPROM of the motor driver IC DRV10983.

I am writing to the EEPROM of the DRV10983 using the MSP430 microcomputer.
In "8.3.5 Non-Volatile Memory" of the DRV10983 datasheet
The procedure for writing to EEPROM is described, but "4. Ensure that VCC is at or above 22 V."

When writing voltage of Vcc is less than 22V, what are the results?

I think that there are phenomena such as

・Writing is not performed

・The write has completely failed, and there is no change in the written contents in the EEPROM

・Although writing is executed, there is a possibility that writing failures such as missing bits may occur due to insufficient voltage.

But do you know how it behaves?

I am worried about whether the written contents in the EEPROM will be affected.

I'm worried about how the written contents in the EEPROM will be affected when the write voltage is insufficient.

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I appreciate your great help in advance.

Best regards,

Shinichi

over 1 year ago

0 Andrew Liu over 1 year ago

TI__Mastermind 18916 points

Hi Shinichi,

Thanks for posting to e2e motor drivers forum -

I've assigned this thread to a team member, but our DRV10983 device expert is currently out of office, returning Nov 7th. We will aim to provide a response as soon as possible to advise on your question.

As a preliminary answer,

the outcomes you mentioned above are likely correct, but I will aim to have a team member confirm.

Best Regards,
Andrew

0 Shinichi Inoue over 1 year ago in reply to Andrew Liu

Guru 19671 points

Hi Andrew,

Thank you for your reply.

I understand your engineer in charge is out of office and come back Nov 7th.

On the other hand, the customer is looking forward to waiting your answer.

Could you please respond as soon as possible.

I appreciate your great help and cooperation.

Best regards,

Shinichi

0 Andrew Liu over 1 year ago in reply to Shinichi Inoue

TI__Mastermind 18916 points

Hi Shinichi,

Understood and we'll aim to provide a response as soon as possible

Nov 7th will be baseline respond time, since the team member is still out - but I've involved the appropriate team members to reply sooner if they are able to

Best Regards,
Andrew

+1 Vishnu Balaraj over 1 year ago in reply to Andrew Liu

TI__Mastermind 24405 points

Hi Shinichi,

One of the conditions to write to EEPROM in DRV10983 is the supply voltage VCC. If VCC is below 22V, EEPROM programming will be unsuccessful, which means the data cannot be written to the EEPROM.

Regards,

Vishnu

0 Shinichi Inoue over 1 year ago in reply to Vishnu Balaraj

Guru 19671 points

Hi Vishnu,

Thank you for your reply.

I’ll share your answer with the customer.

When the customer has an additional question, I consult you again.

Best regards,

Shinichi

0 Shinichi Inoue over 1 year ago in reply to Shinichi Inoue

Guru 19671 points

Hi Vishnu,

The customer has an additional question.

Could you please advise listed below.

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Regarding the answer, "If VCC is below 22V, EEPROM programming will be unsuccessful, which means the data cannot be written to the EEPROM."

In other words, if the voltage is 22V or less, it will never be written, and no missing bits will occur.

Is it correct？

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I appreciate your great help and cooperation.

Best regards,

Shinichi

0 Akshay Rajeev Menon over 1 year ago in reply to Shinichi Inoue

TI__Genius 15116 points

Hey Shinichi,

Vishnu will get back to you before the end of the week.

Best Regards,

Akshay

+1 Vishnu Balaraj over 1 year ago in reply to Shinichi Inoue

TI__Mastermind 24405 points

Shinichi,

If the voltage is less than 22V, data will never be written to EEPROM. At 22V, data can be written to EEPROM.

Regards,

Vishnu

0 Shinichi Inoue over 1 year ago in reply to Vishnu Balaraj

Guru 19671 points

Hi Vishmu and Akshay,

Thank you for your reply.

I understand DRV10983 will not be written to EEPROM less than 22V.

I'll share this with the customer.

I appreciate your great help and cooperation.

Best regards,

Shinichi

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DRV10983: When EEPROM writing voltage is insufficient