
User Manual - Rev1.0.2
M13design - 16 Dec. 21
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3.2
EXTERNAL MEMORY
3.2.1 SERIAL FLASH MEMORY
The
M13-RA6M3-EK
board is equipped with a serial flash memory which is controlled by RA6M3 on-
chip Quad Serial Peripheral Interface (QSPI). By default, the Serial Flash Memory is connected to the
MCU but it can be switched to SD Card anytime.
Shows the serial Flash Memory Overview.
Table 7. Serial Flash Memory Overview
Device Type
MFR
1
/ MPN
2
Operational Voltage
Capacity
Package
Serial Flash
Macronix /
MX25L25645GM2I-
08G
3.3V
32Mbyte
8-SOP (200mil)
Note 1: Manufacturer name
Note 2: Manufacturer Part Number
Shows the pin assignment between the RA6M3 CPU (U1) and the Serial Flash Memory (U8).
Table 8. Serial Flash Memory Pin Assignment
U1 Pin
RA6M3 Pin Functions
Board
Assignment
Signal Name
Default
Function
Remarks
140
P500
JP3
QSPCLK
QSPI
Multiplexed
141
P501
JP4
QSSL
QSPI
Multiplexed
142
P502
JP5
QIO0
QSPI
Multiplexed
143
P503
JP6
QIO1
QSPI
Multiplexed
144
P504
JP7
QIO2
QSPI
Multiplexed
145
P505
JP8
QIO3
QSPI
Multiplexed
The Serial Flash Memory device is connected to the RA6M3 through the JP3-JP8 jumpers. See Section
for detailed information on multiplexing the P500-P505 signals.