SPRUJ53C April 2024 – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
To configure GPIO as open-drain pin, user needs to write 0 to GPxDAT register for the pin followed by a write of 0 to the GPxDIR register. When user writes 0 to GPxDIR register, it will leave pin floating , and when user writes 1 to GPxDIR register, the pin will be driven LOW.
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