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  • TI Thinks Resolved

DRV8825: Reset input condition

Prodigy 40 points

Replies: 2

Views: 50

Part Number: DRV8825

Hi,

 

1). What is the allowable reset rise time ?
2). Is the reset input a Schmitt trigger ?

 

In my circuit, 0.1uF is connected and it is a slow input.

 

  • Suzuki-san,

    nRESET is a logic-level input. For the spec, I cannot say it is a Schmitt trigger. But, it has 0.45V input hysteresis to prevent noise.

    The logic high and logic low flips when the nRESET pin voltage moves between 0.7V and 2.2V. It doesn't request any certain rising time on nRESET pin. After RESET, I will give at least twake time to start driving the motor.

    Best Regards,

    Wang Li

    Motor Drive Solutions

  • In reply to Wang5577:

    Dear Wang Li.

    Thank you for a quick reply.

    I'm sorry, but I will check the content and reply again.

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