BQ25120: The initialization of BQ25120 .

weihan.ji

Part Number: BQ25120

Hi all

After our CPU is initialized, we cannot communicate with BQ25120 by the i2c. How to configure BQ25120's pin after power?

over 6 years ago

0 Gautham over 6 years ago

TI__Genius 12475 points

Hello user,

I am changing the title to match the part number.

What is the voltage on the VSYS? Are you getting a NACK?

What is the voltage on the /CD pin? /CD pin has to be high if you are on VBAT only to communicate.

Can you try plugging in a VIN?

Regards,
Gautham Ramachandran

0 weihan.ji over 6 years ago in reply to Gautham

Intellectual 580 points

Hi gautham,
I'm sorry I'm on vacation for a while.
1. The voltage on the VSYS is 1.8v.
2.There was no response.
3. the CD pin is hign.
I have bought a bq25120AEVM and have more tests.

0 Gautham over 6 years ago in reply to weihan.ji

TI__Genius 12475 points

user,

can you make sure you are using the right address? 0x6A or 0xD4?

regards,

gautham

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BQ25120: The initialization of BQ25120 .