MR25H00-EVAL
Everspin SPI MRAM Evaluation Board User Guide
MR25H00-EVAL MRAM Evaluation Board
The MR25H00-EVAL MRAM evaluation board from Everspin is an Arduino-de-
rived MRAM Shield that will interface with any Arduino-derived microcontroller
host board with standardized UNO pinout.
The Evaluation Board
The evaluation board is populated with a 4Mbit Everspin MR25H40 SPI MRAM
for evaluation of any of the Everspin Product Families listed below.
Everspin Product Family
MR25H256
MR25H10
MR20H40
MR25H40
Density
256 Kb / 40MHz
1 Mb / 40MHz
4Mb / 50MHz
4 Mb / 40MHz
Temperature Grades
Industrial / AEC-Q100 Grade 1
Industrial / AEC-Q100 Grade 1
Industrial
Industrial / AEC-Q100 Grade 1
Host Board Support
The MR25H00-EVAL Evaluation board employs a pin out that is compatible with the Arduino form factor
UNO pinout. The board utilizes the SPI interface on UNO pins D10, D11, D12, and D13. The HOLD and WP
pins are connected to digital pins D8 and D9. See
Appendix A – MR25H00-EVAL Schematic and Layout
for
more detail.
By using this common MCU evaluation board pinout, the MR25H00-EVAL board is compatible with a large
number of MCU evaluation boards. For example, the following four MCU series listed below with Arduino-
derived host boards will work for evaluation using the SPI MRAM Evaluation board.
Host Board Supplier
ST Micro
Freescale
NXP
Renesas
MCU
STM32F411RET6 Series
Kinetis MCU Series
LCP Series MCU
ARM Cortex™-A9 processor Series
Host Board
NUCLEO-F411RE
Kinetis Freedom
LPCXpresso
GR-PEACH: RZ/A1H
We use the NUCLEO-F411RE host board as the example for setup in this Guide.
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SETUP: MR10Q010 - EVAL MRAM EVALUATION BOARD
Besides the MCU host board and the Everspin MR25H00-EVAL Evaluation board, you will need:
•
Computer with Internet access and USB port.
•
A USB cable, with standard A to mini B connectors.
•
Everspin example code from www.mbed.org.
Step 1:
Download the USB Driver for your MCU Host Board
Host Board
NUCLEO-F411RE
Kinetis Freedom
LPCXpresso
GR-PEACH: RZ/A1H
Other
USB Driver
Host Board Description and Drivers
Host Board Description and Drivers
Host Board Description and Drivers
Host Board Description and Drivers
Host Board home page
Step 2:
Plug in the SPI Evaluation board and connect it to your computer via the USB port.
First, plug the MR25H00-EVAL board into your MCU host board, then connect the
host board to your PC using the USB cable. The MCU host board will enumerate
as a composite USB device that includes a built in debugger, storage device and
a virtual com port.
A new drive will be created on your computer with a drive name as assigned by
the host board. We are using the NUCLEO-411RE as an example for this Setup
description.
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Setup (Continued)
Step 3:
Log in to ARM mbed and create a Workspace on your computer.
1. Log in to
developer.mbed.org
. (If you do not already have an
mbed
account, you will need to cre-
ate one.)
2. After logging in, click on the
Compiler
button on the upper right section of the screen.
3. The
mbed
compiler will bring up the
Workspace Management
screen.
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Setup (Continued)
Step 4:
Load the platform for the host board you are using
1. The button on the upper right of the Workspace Management screen will read
No device selected
or, if you have previously loaded a platform, the name of the host board for that platform will appear,
as in the
NUCLEO-411RE
case shown.
2. In either case, click on the button to open the available compiler platforms screen. Select the host
board platform you wish to load or, if it is not present, then select
Add.
3. Adding a platform to your Workspace.
If you selected
Add,
mbed
will display a scrolling list of avail-
able platforms. Find the MCU host board you are using and click on the image.
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Setup (Continued)
4. mbed
will open a new window as an information page for that host platform, such as the NUCLEO-
411RE example here. To add this platform to your workspace, click on the
Add to your mbed Com-
piler
button.
5. The platform will be added to your registered platforms list.
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