Little Bird
8MB PSRAM chip for Teensy 4.1
This 8 MB PSRAM (pseudo-static RAM) chip adds extra memory to the Teensy 4.1 microcontroller board. Solder it to the smaller pads on the bottom side of the T...
This 8 MB PSRAM (pseudo-static RAM) chip adds extra memory to the Teensy 4.1 microcontroller board. Solder it to the smaller pads on the bottom side of the Teensy 4.1, underneath the SD card socket, between pins 31–32 and 33–34.
A second PSRAM chip can be added for a total of 16 MB. In Arduino, use the EXTMEM keyword to allocate large arrays or variables in PSRAM. Note that EXTMEM variables are not initialised at startup and will contain random data — set them to zero or fill them before use.
Key Features
- 8 MB PSRAM – Expands Teensy 4.1 memory for large buffers and data
- Stackable – Add a second chip for 16 MB total
-
Arduino Compatible – Use the
EXTMEMkeyword to allocate variables in PSRAM - Surface-Mount – Solders to dedicated pads on Teensy 4.1 bottom side
Ideal For
- Audio buffers and DSP applications
- Large data arrays and image processing
- Projects requiring more RAM than the Teensy 4.1's built-in 1 MB
Package Contents
- 1× 8 MB PSRAM Chip
Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- RAM
- RAM is temporary memory used while a device is running, and its contents are lost when power is removed. A “Run in RAM” mode is useful for testing settings without permanently programming the module, but it may not support every feature.
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