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ESP32 - Wikipedia
ESP32 PSRAM Schematic and Notes - PCB Artists
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ESP32 - Wikipedia
Getting Started with the ESP32 Development Board | Random Nerd Tutorials
The ESP32 module, a close look at the brain of your dev kit
Available SRAM in ESP-WROOM32 - Development Platforms - PlatformIO Community
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ESP32 - How To Use PSRAM • ThingPulse
Tech Note 136 - ESP32 Using its 8K of RTC RAM to retain data variables during deep sleep. - YouTube
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Use PSRAM
pcb - Trying to add Lyontek SPI RAM to ESP32D - Electrical Engineering Stack Exchange
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How to use 4Mb external PSRAM on ESP32 WROVER module.? - ESP32 Forum
