LP87565-Q1: Issue for the address access

Eric Lai

Part Number: LP87565-Q1

Hi Expert,

The engineer is mentioned the issue for the address access of LP875650.

They can use 0x60 to identify LP875650 but fail to use to 0x66 see it.

If use the address 0x66,there is no any device be found.

But the datasheet say ID is 0x66.

Pls advice.

Best regards,

Eric Lai

Field Application Engineer

Texas Instruments Taiwan Limited

O: +886-2-2175-2582

M: +886-909-262-582

E-Mail:Eric.Lai@ti.com

0 Samuli Piispanen over 3 years ago

Hi Eric,

The I2C address of LP875650RNFRQ1 is indeed 0x66. NRST pin must be high for the device to respond.

Are there other devices connected to the I2C bus that could have the same I2C address?
Could they try to read the value of OTP_ID register from the device that responds to 0x60?
- If the response is not 0x17 then the device is not LP875650RNFRQ1. What is the read value?

Best regards,

Samuli Piispanen

+1 Eric Lai over 3 years ago in reply to Samuli Piispanen

Hi Samuli,

Thanks.

The reading is 0x22.And we also find the whole P/N is LP87565CRNFRQ1.

May we know whether this is the reason for the I2C address is 0x60.

And pls advice any other derivations between them for use it.

Thanks

Eric Lai

0 Tomi Koskela over 3 years ago in reply to Eric Lai

Hello Eric,

You can find the configuration in the Technical Reference Manuals:

Thanks.

Regards,

Tomi Koskela

Power management forum