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RM57L843: Pin behavior at controller startup

Ken Hoffmann67
Prodigy 20 points
Part Number: RM57L843

Hi everyone,

i have a general question about the (GIO-)PIN behavior while "booting or system start" (before gioinit() etc.).
I use the RM57L843 MCU and want to control Relais with GIO Pins. As default behavior of the control Pins is "LOW" recommended  but at system Reset while initialisation they turn high until initialisation is done. I control the relais with the MIBSPI5 Pins set to GIO. Are there GIO Pins with the oposite behavior ot startup or can i change this behavior?

i hope my problem is clear.

Best Regards,

Ken

  • 0
    TI__Guru**** 196286 points
    Ken,

    All I/O signals except nRST are configured as inputs while nPORRST is low and immediately after nPORRST goes high. MibSPI5 signals are pull-up during reset (nPORRST LOW). After the reset, the pull type (up, or down) is programmable.