Dimming of LP55231

Takahiro Nishizawa

Genius 5575 points

Other Parts Discussed in Thread: LP55231

I have questions about LP55231.

Question 1.

Please tell us the function of the following terms.

What are these used for?

- Engine

-program memory

Question 2.

Does this IC have dimming method any other way than I2C?

We want to flash the LED.

Best regards,

Takahiro Nishizawa

over 7 years ago

0 Summer SU over 7 years ago

TI__Expert 4445 points

Hi Takahiro-san,
Both I2C refreshes register an program memory(engine) can flash the LED.
Any further support in the coding, please send me email directly, summer-su@ti.com
Thanks!
Summer

0 Takahiro Nishizawa over 7 years ago in reply to Summer SU

Genius 5575 points

Thank you for your answer!

We want to know meaning and use of words.

What is "engine" used for?
What is "program memory" used for?
Is the I2C dimming method only?

Best regards,

Takahiro Nishizawa

0 Summer SU over 7 years ago in reply to Takahiro Nishizawa

TI__Expert 4445 points

Hi Takahiro-san,
Engine need program memory to support, load pattern to sram then led driver can run it autonomously.
You still need I2C to load the sram data.
I2C direct diimming means refresh PWM by I2C data directly.
Any more concerned please let me know, thanks!
Summer

Power management

Power management forum

Dimming of LP55231