ESP-PSRAM-32 for WROOM-32 and ESP32

The ESP-PSRAM-32 is a 1.82V 32-Mbit of SPI/QPI (serial/quad parallel interface) Pseudo SRAM device. Any necessary refresh operations are completed by the device itself, and the module is fully-equipped with Pseudo-SRAM features. The RAM is able to be configured as 4-bit I/O common interface, or as 1-bit input and output separately.