TCA6424A: Undescribed command byte access

Kazuki Kuramochi

Part Number: TCA6424A

Hello Expert,

I'd like to know about what will happen when I access the command byte that is not described on datasheet.
Is it just ignored or is there any hidden register?

I'm looking forward to hearing back from you.

Best reagards,
Kazuki Kuramochi

over 3 years ago

0 Kazuki Kuramochi over 3 years ago

TI__Genius 10475 points

Hello Expert,

I’ll access to command byte of 54h, 55h, 56h,60h, 61h, 62h and 63h, 64h, 65h and will write value from 00 to FF.
Is there possibility that above access cause unexpected behavior?

Thank you and best regards,
Kazuki Kuramochi

+1 BOBBY over 3 years ago in reply to Kazuki Kuramochi

TI__Guru 71910 points

You will receive a NACK from our device. No, there will not be any unexpected behavior.

-Bobby

0 Kazuki Kuramochi over 3 years ago in reply to BOBBY

TI__Genius 10475 points

Hello Bobby,

Thank you for your swift reply and I understand,

Best regards,
Kazuki Kuramochi

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TCA6424A: Undescribed command byte access