Question: Is it possible for this device to transit into shut down mode without waiting 99ms, after issued the command from CPU and CPU has completed reading temperature data?
Yes, it is possible to shut down the device in order to reduce power, its called "One Shot Mode (OS)". By using this mode you can perform a single conversion (40uA current) and then return to a shut down state (1uA current) which is best suited for applications that need low power and doesn't require continuous temperature monitoring. Moreinformation in how to operate in this mode is available on Page 10 of the Data sheet.
Question: IWith regard to the description of IQ which is mentioned as "Serial Bus Active, SCL Frequency = 400kHz" on datasheet page 3, is this considered for including current consumption while exchanging data, or only considered for I2C operation?
Iq in this case includes both the current due to conversions(default - 4Hz case) and the current due to SCL and SDA lines toggling during the communication with host. If you are interested in just the current consumed due to I2C communication, please refer to Shut Down current (Isd) located below Iq values table in Page 3 of the Data sheet.
Hope I have answered your questions thoroughly....
Best Regards,
Abhi
