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TCAN2451-Q1: unused pin

Ivy Jin
Expert 4515 points
Part Number: TCAN2451-Q1

Tool/software:

Hi team,

May I know that the following unused pins should be kept floating or connected to GND? Cheers. Thanks.

WAKE1-2 -WAKE2-1, WAKE3-32 WAKE4-31

HSS1-7,HSS2-6，HSS3-5，HSS4-4

CFG-22，

Regards,

Ivy

  • +1
    TI__Guru 52082 points

    Hi Ivy,

    WAKE1 through WAKE4 if unused should be disabled and connected to ground - by default they are enabled so you will have to write 0x00 to register address 0x2A (WAKE_PIN_CONFIG3) to shut them off. 

    HSS1 - HSS4 can be left floating and they should disabled in the software - however they are disabled by default so just don't turn them on if unused. 

    Pin 22 is GFO - there is no CFG pin on this device; the GFO pin is a general purpose output and can be left floating if unused.

    Please let me know if you have any other questions.

    Best,

    Parker Dodson