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LP8860-Q1: Programming EEPROM with USB to GPIO USB Interface

Jason Fye
Prodigy 10 points
Part Number: LP8860-Q1

I am trying to program the EEPROM of the LP8860-Q1 using the USB to GPIO USB Interface device.  I tried the GUI software that was available, it kept saying the adapter was not connected.  I discovered on a another post that the GUI software was not built for windows 7 64 bit, so I downloaded the Fusion Digital Power Designer software and I am using the SMBUS/I2C tool.  I have been trying many different settings and I am getting NACK for any request I send. 

Is there any particular setting or other software I should be using?  My end goal is to use a Visual Studio program to be able to write the EEPROM.

  • 0
    TI__Mastermind 18550 points

    Hello Jason,

    TI's GUI software is designed to communicate with a MSP430 micro-controller which in turn provides a I2C/SPI interface to LP8860Q1 device. So the GUI SW will not work in a standalone fashion if you try to connect to the LP8860Q1 directly.

    LP8860Q1 has standard I2C/SPI interface so any hardware/software implementing this interface should be able to access LP8860 registers. Please ensure that you apply power to LP8860Q1's VDD and VDDIO/EN pin before initiating any I2C/SPI transactions. Hope that this is helpful.

    Regards,

    Liaqat