ESP-WROVER-KIT 93c46 EEPROM

dedvalson
Posts: 22
Joined: Fri Feb 16, 2018 8:21 pm

ESP-WROVER-KIT 93c46 EEPROM

Postby dedvalson » Fri Feb 16, 2018 8:26 pm

The schematic for the ESP_WROVER_KIT shows a 93c46 EEPROM connected to the FT2232HL USB interface chip.

I assume this EEPROM contains boot / control code for the FT2232HL chip. Is this code available if I wanted to duplicate the USB port circuit on my own ESP32-ROVER based board? I can't seem to find any reference to it anywhere.

Thanks,

Don

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP-WROVER-KIT 93c46 EEPROM

Postby ESP_Sprite » Sat Feb 17, 2018 4:37 am

No, it doesn't contain any boot code (because the FT2232 isn't a microcontroller), it can contain configuration (like reported USB strings etc) for the FT2232. I'm, however, not sure if we even write it in our current ATE process. I think there are tools around on the FTDI website to read this EEPROM if you want to be sure.

dedvalson
Posts: 22
Joined: Fri Feb 16, 2018 8:21 pm

Re: ESP-WROVER-KIT 93c46 EEPROM

Postby dedvalson » Tue Feb 20, 2018 2:13 pm

Hi,

Thanks for the help.

I did read the EEPROM and it was blank (All FF).

Thanks,

Don

rohansingh
Posts: 8
Joined: Mon May 14, 2018 2:07 pm

Re: ESP-WROVER-KIT 93c46 EEPROM

Postby rohansingh » Wed Nov 27, 2019 4:09 pm

In case anyone else is wondering whether the EEPROM is at all necessary, it's not. I physically removed it from my ESP32-WROVER-KIT and everything still works as expected. So if you're building a similar system, feel free to omit the EEPROM entirely.

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