View Full Version : Serial Flash Audio with u-law or possibly a 512 Mbit N25Q512A13G?

Lo Ryuken
03-26-2016, 11:22 AM
I'm playing audio from serial flash on a W25Q128FV but don't have enough space.

Is it possible to use any smaller format than simply 16-bit RAW? I tried 8-bit and 8-bit u-law with no luck.

Also, I saw someone mention using a N25Q512A13G for memory on the audio shield.

Would something like this work as a simple replacement for the W25Q128FV?


Lo Ryuken
03-28-2016, 07:44 AM
I went ahead and ordered the N25Q512A13GF840E from Digi-Key. Hopefully it works! :)

03-28-2016, 08:27 AM
Not sure if this list would be the same for the Audio board?
Here is a posted list of chips Paul has tested: PaulStoffregen...tests.txt (https://github.com/PaulStoffregen/SerialFlash/blob/master/tests.txt)

From : Flash-memory-for-Teensy-3-2-with-SerialFlash (https://forum.pjrc.com/threads/32913-AT25SF041-Flash-memory-for-Teensy-3-2-with-SerialFlash?p=95507&viewfull=1#post95507)

There are a few other posts and threads about memory - try BING or google

Here is an OSH PCB you could order to build up your own larger flash shield: https://oshpark.com/shared_projects/KZt5PaU7

03-29-2016, 01:09 AM
You might also look at the MP3 and AAC decoding library Frank published some time ago. It imposes some CPU usage issues, but if you can work with that, 1 megabyte becomes 1 minute of good audio with MP3, or even better compression with AAC.