DRV8818 with ST mcu

Frank Xiao

Genius 12055 points

Other Parts Discussed in Thread: DRV8818

Hi team,

My customer is using DRV8818 now, and the MCU is from ST. But sometimes, the ST MCU will be broken, the phenomenon is the I/O of the MCU is broken. so the customer want to check our EN and step direction pins input current requirements. Thank you.

Frank

over 8 years ago

0 Rick Duncan over 8 years ago

TI__Guru** 114905 points

Hi Frank,

The ENBL pin has a 1M pullup to VCC and the STEP pin has a 1M pulldown to GND. These should not cause problems for the MCU.

What is VCC of the DRV8818?

What is the connection from the mcu to the DRV8818? Is the mcu and the DRV8818 on the same board?

0 Frank Xiao over 8 years ago in reply to Rick Duncan

TI__Genius 12055 points

Hi Duncan,

They just connect the pin to the I/O of the MCU. The vcc should be 3.3v. They are in the same board. Thank you.

BR
Frank

0 Rick Duncan over 8 years ago in reply to Frank Xiao

TI__Guru** 114905 points

Hi Frank,

Is there any additional information you can provide?

0 Frank Xiao over 8 years ago in reply to Rick Duncan

TI__Genius 12055 points

Hi Duncan,

No other information now. If you need more information, please feel free to let me know.

Thank you.

BR
Frank

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DRV8818 with ST mcu