FS85 INTB pin configuration

sakshimashalkar — Mon, 19 May 2025 07:57:20 GMT

Hello Team,

I am trying to configure with Infineon TC399 . I am facing issue in configuring INTB pin .

Can someone suggest how do we have to configure INTB pin or it will be handled by the device.

Re: FS85 INTB pin configuration

TomasVaverka — Tue, 20 May 2025 07:02:48 GMT

Hello Sakshi,

INTB is an open-drain active-low output with internal pull up (10kΩ) to VDDIO. When there is no fault or event, INTB is high (via this internal pull-up). When FS85 asserts an interrupt, INTB is pulled low. Each interrupt can be masked by setting the corresponding inhibit interrupt bit in M_INT_MASK registers.

On the MCU side, you should configure the GPIO connected to INTB as an input with interrupt capability on falling edge. In an interrupt handler, you should read M_FLAG registers over SPI to determine the cause and de-assert the interrupt pin.

BRs, Tomas

S32KのトピックFS85 INTB pin configuration

FS85 INTB pin configuration

Re: FS85 INTB pin configuration