About TB6600hg stepper driver.

[Lchal.1]

HI, i am using TB6600HG stepper IC in my board to drive stepper motor using stm32f103R8Tx. In TB6600hg driver IC there is a Alert Pin its function is to monitor TSD and ISD.

where TSD is built in thermal shutdown.

ISD is built in overcurrent detection.

if my TSD = Under TSD detection and ISD=normal then ALERT = low.

if my TSD= normal and ISD= normal then my ALERT = z.

And even they are used 'z' for some other pins to check the state.

But I don't know what that 'z' refers or meaning in TB6600HG driver IC . can anyone help me with it please.

Thank you

[Vangelis Fortounas · Accepted solution]

Hello

High Z state is the third state of a Three State logic. (Hi Lo high-Z)

Z is the impendance generaly, so High Z state is like the pin is disconnected.

Formaly, a resistor is connected between this pin and Vcc (pullup).

The purpose of this logic is to use multiple devices in a single bus.

"Open Drain" used in STM32 devices is a hi-Z state.

[Lchal.1]

Thank you