DRV8899-Q1: STEP/DIR pin setting in SPI communication

Youhei Miyaoka

Part Number: DRV8899-Q1

Tool/software:

Hi team,

Could you advice to me about STEP/DIR pin setting when customer control this device by SPI. Is it OK to open both of pin?

Regards,

Youhei MIYAOKA

over 1 year ago

+1 Murugavel4637 over 1 year ago

TI__Mastermind 45425 points

Hi Miyaoka-san,

Yes it is okay to leave the STEP and DIR pins not connected when the device is controlled by SPI STEP and SPI DIR. These pins have internal pull down - see below from datasheet. Regardless of that the logic inputs on the pins will be ignored when SPI mode control is selected.

Regards, Murugavel

0 Youhei Miyaoka over 1 year ago in reply to Murugavel4637

TI__Expert 4125 points

Hi Murugavel,

Thank you for answering.

Regards,

Youhei MIYAOKA

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DRV8899-Q1: STEP/DIR pin setting in SPI communication