Renesas M3016 User manual

M3016 Evaluation Kit User Manual
Jul.21.20
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1. Overview
The Renesas Serial MRAM evaluation board contains a Serial MRAM device utilizing Spin-Transfer
Torque Magneto-Resistive Random-Access Memory (STT-MRAM) technology enabling users to develop
interactive hardware solutions using the Renesas Serial MRAM evaluation board and an Arduino UNO
Rev. 3 host board connected via standard SPI interface. The Arduino UNO host board communicates
with a computer using a USB 2.0 cable type A/B and terminal emulator software. Renesas software
bundled APIs and test program provide basic access to functionality of the Renesas Serial MRAM, also
known as PersistentSRAM(P-SRAM) device. The Arduino UNO SPI can operate up to 8MHz.
The MRAM evaluation kitincludes:
One Arduino UNOREV 3 hostboard
One Renesas MRAM evaluation board
oOne populated MRAMdevice (see Table 1below)
One USB 2.0 cable type A/B
M30162040054X0ISA* MRAM device
*Alternatively MRAMdevice is marked as AS3016204-0054X0ISAY
2. Renesas Serial MRAM Product Support
The Renesas MRAM evaluation board ispopulated withthe followingSerial MRAMdevice:
Table 1: Renesas Product Support
Part Number
Density
Voltage
(Vcc/Vccq)
Frequency
Interface
Package
M30162040054XxxSAx*
16Mb
2.7V to 3.6V
Up to 54Mhz
SPI, QSPI
8-Pin SOIC
*AlternativelyMRAMdevice ismarkedas AS3016204-0054X0ISAY

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Contents
1. Overview............................................................................................................................1
2. Renesas Serial MRAM Product Support................................................................................1
3. Host Board Support.............................................................................................................3
4.1 Requirements.....................................................................................................................4
4.2 Software Installations..........................................................................................................4
4.3 Connecting the Arduino UNO Host Board.............................................................................5
4.3.1 Configuring PuTTY........................................................................................................6
4.4 APIs....................................................................................................................................8
4.4.1 SPI Write .....................................................................................................................8
4.4.2 SPI Read ......................................................................................................................8
4.4.3 SPI Burst Write.............................................................................................................8
4.4.4 SPI Burst Read..............................................................................................................9
4.4.5 SPI Status Register Write..............................................................................................9
4.4.6 SPI Status Register Read...............................................................................................9
Appendix A......................................................................................................................................10
Appendix B......................................................................................................................................12
Revision History...............................................................................................................................14

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3. Host Board Support
The Renesas MRAM evaluation board is compatible with the Arduino UNO REV3 host platform. For
details of the Arduino UNO REV3 hostboard go to Arduino UNOREV3.
Figure 3: Renesas MRAM
Evaluation Board populated with an
SOIC-8 MRAM device
Figure 1: Renesas MRAM Evaluation Board
populated with a DFN (WSON)-8 MRAM
device
Figure 2: Arduino Uno Host with Renesas
MRAM Evaluation Board on Top with
DFN (WSON)-8 MRAM device
Figure 4: Arduino Uno Host with Renesas
MRAM Evaluation Board on Top with
SOIC-8 MRAM device

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4.1 Requirements
A PC system with one available USB
2.0/3.0 port
Windows 7/8/10 with 32/64-bit
OperationSystem
An Arduino UNOhost board R3
A USB 2.0 cable Type A/B
4.2 Software Installations
1. Downloading the Arduino software
IDE (Integrated Development
Environment). This software is
required to program the Arduino UNO
host board.
Downloadthe latestversionof
Windows installerfrom
(https://www.arduino.cc/en/Main)
2. Installing Arduino application software anddrivers
Click on “Arduino-x.x.x-windows.exe” file to install Arduino application software and
USB drivers
Figure 5: USB Driver Installation

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4.3 Connecting the Arduino UNO Host Board
Follow the step-by-step instructions in the following order below to configure and connect the
Arduino UNO host board to your computer:
1. Attach the Renesas MRAM evaluation board on top of the Arduino UNO host board via the
UNO R3 headers (refertoFigures 1and 2 or Figures 3 and4).
2. Connect the Arduino UNO host board to your computer’s USB port using the USB 2.0 cable
Type A/B. The green power LEDs on both the Arduino UNO host board and the Renesas
MRAM evaluation board should go on.
3. For first time installation, Windows should initiate the USB driver installation process. You
can check to ensure the USB drivers have been properly installed by opening Windows
Device Manager, andlooking under “Ports (COM & LPT)”. Windows should assign COM port
# to the Arduino UNO host board. If no COM port has been assigned to the Arduino UNO
host board, then remove and re-insert USB connector from/into PC’s USB port for Windows
to re-enumerate the USB port. If that still doesn’t work, then you may need to re-install the
USB drivers.
Figure 6: Selecting COM Port for Arduino UNO

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4.3.1 Configuring PuTTY
Follow the step-by-stepinstructions belowto configure the PuTTYUART terminal:
1. Double click onPutty iconto openPuTTY ConfigurationWindow.
2. Under “SSH”, select “Serial”. Under “Flow control” pull-down menu, select “None”(referto
Figure 7).
3. Under Category, select “Terminal”, and check “Implicit CR in every LF” checkbox (refer to
Figure 8).
4. Select“Session” under“Connection Type”, select “Serial”(refertoFigure 9).
5. In the “Serial line” box, type “COMx” where x is the COM port # that Windows has assigned
to ArduinoUNOboard (referto Figure 9).
6. In the “Speed” box, type “115200” to set the baud rate (refertoFigure9).
7. In the “Saved Sessions” box, type “COMx” where x is the COM port # that Windows has
assigned toArduinoUNOboard(referto Figure 9).
8. Click “Save” to save the COMx configuration file(refertoFigure 9).
9. Click “Open” to launch PuTTY (referto Figure 9).
10. The Arduino UNO host board and the Renesas MRAM evaluation board are now up-and-
running. The Terminal Monitor window will display a menu of read/write/compare tests
for the Renesas MRAM device (referto Figure 10).
Figure 8: PuTTY Configuration - 2
Figure 7: PuTTY Configuration - 1

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Figure 9: PuTTY Configuration - 3
Figure 10: Renesas Test Menu on MRAM - PuTTY

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4.4 APIs
4.4.1 SPI Write
Purpose: API to write to MRAM
Arguments: MRAM address (2-byte address;3-byte addresswhenTHREEBYTEADDRESS is
enabled)
MRAM data: 2-byte data
Parameter: unint32_t (address);unit16_t (write data)
Return: None
Usage: SPI_Write (0x0000, 0x55); Write 2-byte data 0x55 to MRAM starting address
0x0000
4.4.2 SPI Read
Purpose: API to read from MRAM device
Arguments: MRAM address (2-byte address;3-byte addresswhenTHREEBYTEADDRESS is
enabled)
MRAM data: 2-byte data
Parameter: unint32_t (address)
Return: None
Usage: SPI_Read(0x0000); Read 2-byte datafrom MRAM startingaddress 0x0000, and
assigns to variable ‘value’
4.4.3 SPI Burst Write
Purpose: API to burst-write to P-SRAMdevice
Arguments: P-SRAMaddress (2-byte address; 3-byte address whenTHREEBYTEADDRESS is
enabled)
SPnvSRAM_wr_data_ptr(databufferwhichneedstobe writtenintoP-SRAM)
Total_count (total numberof words to write)
Parameter: unint32_t (address);unit16_t (write data); unint32_t (total count)
Return: None

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Usage: SPI_BurstWrite (0x0000, wr_buf, 16); Write 16 bytes of data fromwr_buf to
P-SRAMstartingaddress 0x0000
4.4.4 SPI Burst Read
Purpose: API to burst-read toP-SRAMdevice
Arguments: P-SRAMaddress (2-byte address; 3-byte address whenTHREEBYTEADDRESS is
enabled)
SPnvSRAM_rd_data_ptr(databuffertoholdthe data beingreadfromP-SRAM)
Total_count (total numberof words to write)
Parameter: unint32_t (address);unit8_t(read_data_ptr);unint32_t (total_count)
Return: None
Usage: SPI_BurstWrite (0x0000, rd_buf, 16); Read 16 bytes of data from P-SRAM
starting address0x0000
4.4.5 SPI Status Register Write
Purpose: API to write status registerbyte
Arguments: 1-byte statusregisterdata
Return: None
Usage: SPI_Status_Reg_Write (0x00); Write one byte 0x00 to statusregister
4.4.6 SPI Status Register Read
Purpose: API to read status registerbyte
Arguments: 1-byte statusregisterdata
Return: None
Usage: SPI_Status_Reg_Read (); Readone byte datafromstatus register, and assigns to
variable ‘status’

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Appendix A
Figure 11: M3016-EVK –Schematic (sheet 1)