In the datasheet (http://www.ti.com/lit/ds/symlink/hdc2010.pdf) in section 7.6.18 there appears to be an error. You list your manufacturer's ID as "IT" when I would assume you meant "TI". The LSB is listed as as 0x49 = "I" in ASCII and then listed the MSB as 0x54 = "T" but in 7.6.18 you mention the word as 0x4954 or "IT". Seems wrong.
Not the biggest deal in the world but might save someone else 5 minutes.
Jason
