SNAS817C June 2021 – March 2023 HDC3020-Q1 , HDC3021-Q1 , HDC3022-Q1
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The HDC302x-Q1 provides hardware notification of events through an interrupt output pin (ALERT). Specifically, the ALERT output represents the status of bits 15, 11, 10, and 4 from the Section 8.5.7.6. The ALERT output asserts to Logic High upon detection of an event and deasserts to Logic Low when the event has passed or after the Section 8.5.7.6 is cleared.
The ALERT output is activated by default upon Power Up, Hardware Reset, and Soft Reset. It is deactivated when the HDC302x-Q1 has been disabled via assertion of the RESET pin. When deactivated, the HDC302x-Q1 will clear the Section 8.5.7.6.
If temperature and relative humidity tracking through the ALERT output is not desired, the feature can be disabled as explained in Section 8.5.7.4.4.