diymore ESP32 WROVER 4MB SPI Flash 8MB RAM 0.96" OLED USB to TTL Serial CP2104 Five Way Button 18650 Battery Holder for Arduino|Integrated Circuits| - AliExpress
Connecting 128KB SPI-RAM to Arduino Mega | 8 Bit Force
pcb - Trying to add Lyontek SPI RAM to ESP32D - Electrical Engineering Stack Exchange
avr11: building an SPI SRAM shield for an Arduino Mega | Dave Cheney
SPI RAM 4Mb Memory Module PMOD from MemorySolutions on Tindie
ESP32 - How To Use PSRAM • ThingPulse
Radiation-hardened serial interface ferroelectric RAM (F-RAM) for space applications introduced by Infineon | Military Aerospace
Interface an SRAM Bus to Your Arduino : 3 Steps - Instructables
Hardware by design: ChibiTerm - SPI RAM Buffer idea