I2C sequential Write

[Ludità]

Messrs NXP,

I would ask to you if any device among #PCF8575, #PCA9535 & #PCA9555 does support I2C sequential write for an optimized data transfer in a point-to-point channel.

Best Regards

[diazmarin09 · Accepted solution]

Hello,

I hope all is great with you. Thank you for using the NXP communities.

Please review the information below regarding the different devices:

PCF8575 - The devices supports sequential I2C writing procedure.

“The number of data bytes that can be sent successively is not limited. After every two bytes the previous data is overwritten.”

PCA9535 - The devices supports sequential I2C writing procedure.

“There is no limitation on the number of data bytes sent in one write transmission.”

PCA9555 - The devices supports sequential I2C writing procedure.

“There is no limitation on the number of data bytes sent in one write transmission. In this way, each 8-bit register may be updated independently of the other register..”

I do recommend to review the writing procedure of each device.

I hope this information helps.

Regards,

David