Questions tagged [eeprom]

This tag is for questions about using external EEPROMs with any model of Pi. For questions about the EEPROM on the Pi 4, use the 'pi4-eeprom' tag. For questions about the EEPROM on hats, use the 'hat' tag.

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HAT EEPROM address is said to be 0x50, but 0xA0 is most common when A0-A2 are tied low

CAT24C32 is a widely recommended HAT EEPROM. The data sheet says the 4 MSBs are 1010 or Ah. But 0x50 is widely stated to be the correct EEPROM address. Some who recommend the CAT24C32 also say the address bits should be 0x50. I have looked at…
JSP
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How to connect EEPROM to Raspberry Pi 3?

I was wondering on how to connect an EEPROM chip to the Raspberry Pi 3? And any suggestions on which EEPROM chip model is best to use with RPi3?
Shawn Khoo
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HAT EEPROM DTB and RTC on I2C0

I'm having a problem creating a DTB for a HAT auto-configuration. I have a DS3231 RTC module attached on I2C0 (GPIO0 and GPIO1). It incorporates an AT24C32 EEPROM at address 0x50. To get it working, without getting into the HAT part yet, I've added…
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Help with EEPROM log: RPI4 does not boot

This is another "RPI does not boot". I have tried many thins now and I'm not able to figure out why my RPI4 (that is quite valuable these days) does not boot. EEPROM is working fine and I followed this post to output the early boot log to UART. This…
Miguel
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How do I erase the RPI EEPROM and install one for a different OS that I coded myself?

I would like to completely erase the EEPROM and then shutdown the RaspBerry Pi 4 that I bought. When you then insert a USB-stick with your own bootloader, it should search for it and automatically install the bootloader you have either compiled or…