SI7021 I2C command sequence

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yef smith

Joined Aug 2, 2020
49
Hello,I am using EFR32FG14 starter board.I want to read data from SI7021(Without any driver which does everything for me)
Stricktly by manual, The address of the device is 10000000 which is Hex 80.from the command table shown bellow.
I want to use Measure temperature so i think i should use E3.But i cant understand the meaning of hold mater mode
What is clock streching?
https://www.silabs.com/documents/public/data-sheets/Si7021-A20.pdf
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