Memory Plug

The memory plug is a small board with 1 to 4 EEPROM memory chips. With M24M01’s from STMicroelectronics, for example, the board can have up to 512 Kbyte of memory (4x 1 Mbit).

An I2C bus running at 3.3V is used for I/O, with all the power and signal lines brought out to to both sides of the board to allow daisy-chaining with other I2C-conformant boards.

For additional details, see


There is nothing to configure. The memory chips on this plug respond to I2C addresses 0x50 .. 0x57 (each chip responds to two consecutive addresses!).

Header Pinouts

Design Info

Dimensions: 21.1 x 24.1 mm
CadSoft EAGLE design files: see below.
This plug can be operated at 5V as well as 3.3V.

This board uses the conventions of a JeePlug and can be used with the ports on a JeeNode. It can also be used with other boards and MCU’s, if you hook it up properly and adapt the interface code for it.

How to Get It

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mp2.DSC_0699.jpg (10.3 KB) myra, 2012-07-17 13:35

mp2._00000220.png (23.3 KB) myra, 2012-07-17 13:35

jlpcb-071.brd (11.7 KB) myra, 2012-07-17 16:17

jlpcb-071.pdf (15.1 KB) myra, 2012-07-17 16:17

jlpcb-071.sch (13.5 KB) myra, 2012-07-17 16:17

jlpcb-071.png (70 KB) myra, 2012-07-17 16:17