CPU_45A-V3
CPU Board XMC4500 General Purpose
Hardware Description
Board User's Manual
18
Revision 1.0, 2014-01-10
2.6
Serial Flash Memory
The CPU_45A-V3 board provides a 32 Mbit serial flash memory from Micron (type: N25Q03) interfaced to
XMC4500 through a SPI interface. The SPI interface can be configured as single, dual or quad SPI.
Table 6
Quad SPI Signals
Pin No.
Pin Description
Signal Name
Signal Description
P0.13
U1C1_SCLKOUT
CLK
Clock
P3.3
U1C1_SELO1
CS#
Active Low Chip Select
P3.15
U1C1_DOUT0
DI (IO0)
Data Input/Output of Flash (MTSR/MOSI)
P3.14
U1C1_DX0B
DO (IO1)
Data Input/Output of Flash (MRST/MISO )
P0.14
U1C1_HOUT3/DWIN3
HOLD# (IO3)
Data Input/Output
P0.15
U1C1_HOUT2/DWIN2
WP# (IO2)
Data Input/Output
Figure 15 Quad SPI Flash Interface Circuit
SPI-Flash.emf
32 Mbit serial
Quad-SPI
Flash (Micron,
N25Q032A13)
Figure 16 Quad SPI Flash
