LP5816: Latency from I2C communication

Shotaro Sakai

Part Number: LP5816

Tool/software:

Hello team,

How long is the time reflected in LED output after sending the on/off command via I2C? I could not find the spec in the datasheet.

Best regards,

Shotaro

1 month ago

0 Gui He 1 month ago

TI__Mastermind 27766 points

Hi Shotaro Our expert will reply to you later.

Thanks and best regards.

+1 Leon He 1 month ago

TI__Intellectual 790 points

Hi Shotaro,

When send the I2C command, The LED OUTPUT will be reflected in next PWM cycle. the LED PWM frequency is 23KHz.

Sometimes I2C command stop signal is close to the end of current PWM cycle. The LED OUTPUT will be reflected in the one after next cycle. So I think the maximum reflect time should be lower than 2 PWM cycle, 87uSec.

BRs,

Leon

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LP5816: Latency from I2C communication