Teensy 4.1 Fully Loaded For Prototyping System

Description

The Teensy 4.1 Fully Loaded for Prototyping System includes the same memory options as our standard Teensy 4.1 Fully Loaded product along with additional changes for it to work properly in our Prototyping System for Teensy 4.1 and Project System for Teensy 4.1 baseboards.

It will also work in most other PCB baseboards that bring the Teensy 4.1 I/O out from the bottom of the board, but note that it will no longer plug into a solderless breadboard due to the extra connectors.

If you are looking for a Teensy 4.1 fully loaded with memory that will work with solderless breadboards, head to this link:  https://protosupplies.com/product/teensy-4-1-fully-loaded/

Please Note:  Since this item is hand-modified, we can usually configure and ship additional assemblies within a couple of business days if we have the base Teensy 4.1 and chips in stock.  If you have requirements for a larger number than we show in stock or need further customization such as being built using the Lockable version of Teensy 4.1, email us at support@protosupplies.com with your requirements. 

Package Includes:

• Teensy 4.1 configured as outlined below
• Handy pinout diagram

The following changes are made to the base Teensy 4.1 product:

• The VUSB/VIN trace is cut
• An SMD 1A Schottky diode is placed across the VUSB / VIN pads
• Optional memory is added as outlined below
• VUSB 1-pin header is installed
• A female 2×3 2mm header is mounted at the Ethernet connector location on the bottom side of the Teensy 4.1
• Male 5-pin headers are mounted to the bottom side of the Teensy 4.1 to bring down the USB Host, VBat, On/Off and Program buttons.
• Standard Teensy 4.1 24-pin headers are installed

By separating the VUSB and VIN power inputs and placing a Schottky diode between them, this allows the Teensy 4.1 to be powered from both the USB cable and VIN input at the same time.  It also allows the Teensy 4.1 to be powered on the bench from the USB cable without being placed into a baseboard which can be handy at times.

When used with our Prototyping System for Teensy 4.1 baseboard, the Schottky diode is in parallel with the one on the baseboard, so is redundant.  If using this Teensy 4.1 in another baseboard, it removes the need to try to solder one on which is difficult once the module is built.  A diode still needs to be added to the main VIN input power which our baseboard includes.

This shows a typical baseboard socket that this version of the Teensy 4.1 will plug into.

Memory options

These memory configurations can be selected at the top of the page or down below.

• 8MB/64M-bit PSRAM & 16MB/128M-bit NOR Flash
• 8MB/64M-bit PSRAM & 128MB/1G-bit NAND Flash
• 8MB/64M-bit PSRAM & 256MB/2G-bit NAND Flash
• 16MB/128M-bit PSRAM with no Flash
• No Additional Memory

All memory is installed and tested.

DEV-26-B (Bare with No Added Memory) has all the modifications noted above with no additional memory installed as shown below.

DEV-26 (8MB PSRAM/16MB Flash) has an 8MB (64M-bit) volatile PSRAM installed along with a 16MB (128M-bit) non-volatile NOR Flash memory as shown below.

The Flash chip will be a Winbond W25Q128JVSIQ.  The PSRAM will be one of the following which are all interchangeable:  IPUS IPS6404LSQ, ESP PSRAM64H, AP 6404L-3SQR or Lyontek LY68L6400S.

When used with LittleFS file system, the 16MB/128M-bit NOR Flash chip uses the LittleFS_QSPIFlash constructor.

#include “LittleFS.h”
LittleFS_QSPIFlash myfs; // NOR FLASH 128Mb

DEV-26-1G (8MB PSRAM/128MB Flash)has an 8MB (64M-bit) volatile PSRAM installed along with a 128MB (1G-bit) non-volatile NAND Flash memory as shown below for those that need a large amount of non-volatile storage such as for data logging.  The NAND Flash is the 8-pad WSON 8x6mm package.

The Flash chip will be a Winbond W25N01GVZEIG.  The PSRAM will be one of the following which are all interchangeable:  IPUS IPS6404LSQ, ESP PSRAM64H, AP 6404L-3SQR or Lyontek LY68L6400S.

When used with the LittleFS file system, the 128MB/1G-bit NAND Flash chip uses the LittleFS_QPINAND constructor.

#include “LittleFS.h”
LittleFS_QPINAND myfs; // NAND FLASH 1Gb

DEV-26-2G (8MB PSRAM/256MB Flash) has an 8MB (64M-bit) volatile PSRAM installed along with a 256MB (2G-bit) non-volatile NAND Flash memory as shown below for those that need an even larger amount of non-volatile storage such as for data logging, image files or audio files.  The NAND Flash is the 8-pad WSON 8x6mm package.

The Flash chip will be a Winbond W25N02KVZEIR.  The PSRAM will be one of the following which are all interchangeable:  IPUS IPS6404LSQ, ESP PSRAM64H, AP 6404L-3SQR or Lyontek LY68L6400S.

When used with the LittleFS file system, the 256MB/2G-bit NAND Flash chip uses the LittleFS_QPINAND constructor.

#include “LittleFS.h”
LittleFS_QPINAND myfs; // NAND FLASH 2Gb

DEV-26-P (16MB PSRAM) has two volatile PSRAM chips installed for a total of 16MB (128M-bit) as shown below.  There is no external Flash memory installed as the 2nd PSRAM chip physically occupies the Flash location.

The PSRAM will be one of the following which are all interchangeable:  IPUS IPS6404LSQ, ESP PSRAM64H, AP 6404L-3SQR or Lyontek LY68L6400S

Once assembly is completed, we run test software which is a combination of the PJRC PSRAM and Flash test programs that thoroughly exercises these memory devices.

For full details on the Teensy 4.1 as well as additional compatible parts that may be of interest, please refer to the base Teensy 4.1 Product Page.

Before they are shipped, the Teensy 4.1 has:

• The board is configured as outlined above.
• Board is cleaned of flux
• PSRAM and Flash test software is downloaded and run to verify correct chip operation
• Blink example is downloaded
• Packaged in high quality resealable ESD bag for safe storage.

FURTHER READING:

LEARN – Working with Teensy 4.1 Memory – Overview of the Teensy 4.1 memory architecture including the optional PSRAM and Flash memories.

Notes: 

1. Because of the bottom mounted I/O, these Teensy 4.1 will not work in a solderless breadboard.

Technical Specifications