Author Topic: Provisioning a brand new EEPROM  (Read 1836 times)

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Offline frusciante89Topic starter

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Provisioning a brand new EEPROM
« on: August 14, 2023, 06:26:31 pm »
Hello everyone!
I'm relatively new to the world of EEPROM so apologises in advance if I sound like a noob :)
This is my application: I have a magnetic encoder I need to use for a robotic project, the icHaus ic-MU200 (https://www.ichaus.de/product/ic-mu200). I've bought their eval board to test it and everything looks great. This is the eval board: https://www.ichaus.de/upload/pdf/MU200_EVAL_MU6M_evalmanual_A1en.pdf
After the first evaluation tests, I've made my own board based on the schematics available in the datasheets. I have soldered all the components and I've started testing the board with their evaluation software.
Everything works great: I can read the sensor, I can run a calibration and I can modify the RAM parameters. However, I can not write to the EEPROM - the error I'm given is that the I2C can't find the EEPROM. I'm stuck here!

A couple of details:
- I've used the same EEPROM they use in the MU6M board, a 24LC16B/P
- I've not done anything to the EEPROM, I literally took it out of the packaging it came with and I've soldered it in place

Any ideas on what might be going wrong here? Do I need somehow to provision the EEPROM?
 
 

Online ataradov

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Re: Provisioning a brand new EEPROM
« Reply #1 on: August 14, 2023, 06:42:42 pm »
No provisioning is required, it should just work. What exact part number have you used for your board? Do you have pull-up resistors on the SCL/SDA lines?
Alex
 

Offline ozcar

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Re: Provisioning a brand new EEPROM
« Reply #2 on: August 14, 2023, 06:48:31 pm »
Do you have pull-up resistors on the SCL/SDA lines?

And, have you tied address lines the same?
 

Online ataradov

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Re: Provisioning a brand new EEPROM
« Reply #3 on: August 14, 2023, 06:49:46 pm »
That specific EEPROM ignores address lines. So, assuming the same exact part number was used it should be fine. SOT-23 version used on their board does not even have address pins.
Alex
 

Offline frusciante89Topic starter

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Re: Provisioning a brand new EEPROM
« Reply #4 on: October 19, 2024, 08:52:14 pm »
Just wanted to let you guys know that this was solved by applying the proper setting in the icMU200 chip :)
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