OPT3001: Questions for power sequence & first i2c command time

David Liu6

Part Number: OPT3001

Hi,

Does opt3001 have power on/off sequence?
After power on, how long does it take for waiting then I can do the first I2C command?

Thank you

over 3 years ago

0 Praveen Aroul over 3 years ago

TI__Mastermind 49176 points

Hi David,

The application expert for this device, Alex, is on vacation and will be back on Jan 4.

He will respond to your queries when he returns.

Thanks for your patience and understanding.

Happy Holidays!

0 Alex Bhandari-Young over 3 years ago in reply to Praveen Aroul

TI__Mastermind 25815 points

Hi David,

First I2C can be issued after the VDD supply to the device has stabilized.

Best,

Alex

0 David Liu6 over 3 years ago in reply to Alex Bhandari-Young

Prodigy 30 points

Hi Alex,

May I double check that opt3001 doesn't need latency time for executing i2c cmd (read/write register) after vdd is set in operating voltage (ex: 1.8v)?
And I didn't find power on/off sequence on opt3001 datasheet. Does opt3001 have power on/off sequence?

Thank you

0 Alex Bhandari-Young over 3 years ago in reply to David Liu6

TI__Mastermind 25815 points

Hi David,

From supply stabilized to device operational should not take longer than 300us.

Can you clarify what you mean by power on/off sequence? Device is single supply so does not have any specific requirements in terms of power supply ordering.

Best,

Alex

0 David Liu6 over 3 years ago in reply to Alex Bhandari-Young

Prodigy 30 points

Thanks Alex,

May I check that I don't need to control I/O pin after vdd power on for opt3001?
For example, interrupt. I have encountered that need to set interrupt (High/Low) in power on sequence in other IC.

Thank you

0 Alex Bhandari-Young over 3 years ago in reply to David Liu6

TI__Mastermind 25815 points

Hi David,

No INT setting is not part of power on seq but it can be controlled through the register settings.

Best,

Alex

Sensors

Sensors forum

OPT3001: Questions for power sequence & first i2c command time