External sRAM and flash connection with ESP32-PICO-D4

habibh
Posts: 7
Joined: Tue May 29, 2018 2:11 pm

External sRAM and flash connection with ESP32-PICO-D4

Postby habibh » Mon Jun 11, 2018 1:22 pm

Hello Group Members,

I want to connect external sRAM and flash with ESP32-PICO-D4 in my project. Can any one recommend how can I connect sRAM and flash with ESP32-PICO-D4 while I also need the functionality of Ethernet RMII in my project.

I shall be thankful for valuable suggestions.

Regards:
Habib

habibh
Posts: 7
Joined: Tue May 29, 2018 2:11 pm

Re: External sRAM and flash connection with ESP32-PICO-D4

Postby habibh » Thu Jun 14, 2018 1:06 pm

Dear Group Members,

The data sheet of ESP332-PICO-D4 says that "Pins IO16, IO17, CMD, CLK, SD0 and SD1 are used for connecting the embedded flash, and are not recommended for other uses".

If I want to use an external flash with ESP32-PICO-D4 can I use the same pins as of integrated flash of ESP32-PICO-D4 with chip select different as shown in the following attachment ?

Regards:
Habib
Attachments
ESP32-PICO with external flash.PNG
ESP32-PICO with external flash.PNG (267.47 KiB) Viewed 62 times

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