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TMC4671 Test Pin 54

Category: Datasheet/Specs
Product Number: TMC4671

Hello

What could be the consequences of leaving pin 54 "test" unconnected? What will happen if it gets disconnected from gnd during operation? I'm experiencing an issue in my devices where motors sometimes burn out. I've already tried many different approaches, but none have worked. I noticed that on my board, there's a problem with soldering pin 54 to ground, and I'm wondering if this could be related. Unfortunately, the documentation doesn't say much about this signal, only that it should be connected to ground.