PCA85133 - LCD Driver -- Power up Issue.

[karuna_pcs]

Hi All,

    We are facing problem with PCA85133 + LCD. Slave  does not acknowledged

Fclk - 2.5KHz

If i try to write the slave address 0x70, it is not ack....Please any one help us. 

[karuna_pcs]

Problem resolved.

[TomasVaverka · Accepted solution]

Hi Karunakaran,

If you have a logic analyzer or an oscilloscope, could you please post here the picture illustrating the I2C traffic?

Also make sure you are using the correct I2C address depending on the voltage on the SA0 input.

Best regards,

Tomas