Generic 64 Mbit Serial Pseudo SRAM - PSRAM - 3.3V 133 MHz

This PSRAM is a 64 Mbit (8 Megabyte) serial pseudo SRAM device, organized in 8 M x 8 bits and in a compact SOIC-8 package. It is fabricated using the high-performance and high-reliability CMOS technology and can operates at 3.3V and can support up to 133 MHz clock rate.

CE#1
Active-low chip select. Source: ESP-PSRAM64/ESP-PSRAM64H datasheet Figure 2-1 and Table 2-1, https://cdn-shop.adafruit.com/product-files/4677/4677_esp-psram64_esp-psram64h_datasheet_en.pdf. CE# selects the PSRAM; CE# high puts the chip in standby.
Type · chip select
SO / SIO12
Serial output in SPI mode; bidirectional I/O[1] in QPI mode. Source: ESP-PSRAM64/ESP-PSRAM64H datasheet Figure 2-1 and Table 2-1, https://cdn-shop.adafruit.com/product-files/4677/4677_esp-psram64_esp-psram64h_datasheet_en.pdf.
Type · data
SIO23
Bidirectional I/O[2] in QPI mode. Source: ESP-PSRAM64/ESP-PSRAM64H datasheet Figure 2-1 and Table 2-1, https://cdn-shop.adafruit.com/product-files/4677/4677_esp-psram64_esp-psram64h_datasheet_en.pdf.
Type · data
VSS4
Core supply ground. Source: ESP-PSRAM64/ESP-PSRAM64H datasheet Figure 2-1 and Table 2-1, https://cdn-shop.adafruit.com/product-files/4677/4677_esp-psram64_esp-psram64h_datasheet_en.pdf.

Start wiring

SPI · 0 V · ESP-PSRAM64H operating supply 2.7 V to 3.6 V; Adafruit listing: 3.3 V

Verify supply voltage and logic levels before powering up.

Module pins: VCC, VSS, CLK. Schematik maps them to your board in the app.

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