Teensy WIZ820IO Ethernet & Micro SD Card Adaptor

This adaptor allows you to easily use gigabytes of SD card flash memory and/or a Wiznet WIZ820io ethernet module with Teensy 3.0 or 3.1

The WIZ820IO ethernet module is not included with this adapter board.

Special extended male header pins are available to connect this board to a Teensy 3.0/3.1. Two pin headers are required.

Electrical Connections

This table lists the electrical connections on this adaptor board.

The WIZ820io and SD card are connected to the default pins used by the Arduino Ethernet and SD libraries. For the SD library, pin 4 should be used in the begin() function.

Teensy3   SD Card   WIZ820io      MCP1825     JUMPER PADS
-------   -------   --------      -------     -----------
 4        2:CS
 8                                            Left Side
 9                  RESET
10:CS               SS
11:DOUT   3:DI      MOSI
12:DIN    7:DO      MISO
13:SCK    5:CLK     SCLK
VIN                               1:IN
          4:VDD     VIN33,VIN33   3:OUT
GND       6:VSS     GND,GND,GND   2:GND+TAB   Right Side
                    PWDN                      Center

By default, the center and right side of the jumper pads are connected, which keeps the WIZ820io powered up. For low power applications, the pads can be cut apart and the left+center joined to allow pin 8 to control the WIZ820io powerdown feature.

Documents

Assembly Instructions
Teensy Software Libraries