SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The presence-condition-detected status flag is contained in the HDQ_CTRL_STATUS[3] PRESENCEDETECT bit. This is valid only in 1-Wire mode. The flag is updated when the HDQ_INT_STATUS[0] TIMEOUT bit is set. Therefore, its correct value shows only after the interrupt is generated. The firmware must wait for the time-out condition; otherwise, the flag keeps its previous value and is undefined.