machdyne / qqspi

QQSPI Pmod-compatible 32MB PSRAM module

QQSPI Pmod™ compatible module

The QQSPI module provides access to four Quad SPI devices via a 12-pin Pmod™ compatible interface.

This repo contains schematics, pinouts and example Verilog code for the LD-QQSPI-PSRAM32 module.

Find more information on the LD-QQSPI-PSRAM32 product page.

Modes

PMOD/SS	PMODCS0	PMODCS1	->	QSPI1/CE	QSPI2/CE	QSPI3/CE	QSPI4/CE
H	X	X	->	H	H	H	H
L	L	L	->	L	H	H	H
L	H	L	->	H	L	H	H
L	L	H	->	H	H	L	H
L	H	H	->	H	H	H	L

Pinout

Pin	Signal
1	/SS (active low)
2	SIO0 (MOSI)
3	SIO1 (MISO)
4	SCK
5	GND
6	3V3
7	SIO2
8	SIO3
9	CS0
10	CS1
11	GND
12	3V3

License

The contents of this repo are released under the Lone Dynamics Open License with the following exceptions:

• The KiCad design files contain parts of the kicad-pmod library which is released under the Apache License, Version 2.0.

• The KiCad design files may contain symbols and footprints released under other licenses; please contact us if we've failed to give proper attribution.

Note: You can use these designs for commercial purposes but we ask that instead of producing exact clones, that you either replace our trademarks and logos with your own or add your own next to ours.