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Chapter 1:
AC701 Evaluation Board Features
Quad SPI Flash Memory
[Figure
The Quad SPI flash memory U7 provides 256 Mb of nonvolatile storage that can be used for
configuration and data storage.
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•
•
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Four data lines and the FPGA CCLK pin are wired to the Quad SPI flash memory. The connections
between the SPI flash memory and the FPGA are listed in
Table 1-5: Quad SPI Flash Memory Connections to the FPGA
The configuration section of the 7 Series FPGAs Configuration User Guide (UG470)
details on using the Quad SPI flash memory.
memory on the AC701 board. For more details, see the Micron N25Q256A13ESF40G data sheet
[Ref
X-Ref Target - Figure 1-5
VCC3V3
R20
R19
DNP
4.7kΩ 5%
FLASH_D3
R429
15Ω 1%
QSPI_IC_CS_B
R430
15Ω 1%
FLASH_D1
20
Send Feedback
1-2, callout 3]
Part number: N25Q256A13ESF40G (Micron)
Supply voltage: 3.3V
Datapath width: 4 bits
Data rate: various depending on Single/Dual/Quad mode and CCLK rate
Schematic Net
FPGA Pin (U1)
Name
R14
FLASH_D0
R15
FLASH_D1
P14
FLASH_D2
N14
FLASH_D3
H13
FPGA_CCLK
P18
QSPI_IC_CS_B
15].
VCC3V3
C18
0.1μF 25V
X5R
R21
4.7kΩ 5%
GND
FLASH_D3_R
FLASH_D2_R
Figure 1-5: 256 Mb Quad SPI Flash Memory
www.xilinx.com
Table
I/O Standard
LVCMOS33
LVCMOS33
LVCMOS33
LVCMOS33
LVCMOS33
LVCMOS33
Figure 1-5
shows the connections of the Quad SPI flash
VCC3V3
U7
N25Q256
R17
256 Mb Serial
DNP
Flash Memory
1
16
C
HOLD_B/DQ3
2
15
DQ0
VCC
3
14
NC7
NC0
4
13
NC6
NC1
5
12
NC5
NC2
6
11
NC4
NC3
7
10
VSS
SB
8
9
FLASH_D2_R
WB/VPP/DQ2
DQ1
GND
1-5.
U7 Quad SPI Flash Memory
Pin Number
Pin Name
15
DQ0
8
DQ1
9
DQ2
1
DQ3
16
C
7
S_B
[Ref 6]
provides
R18
4.7kΩ 5%
FPGA_CCLK
FLASH_D0_R
FLASH_D0
R432
15Ω 1%
R431
15Ω 1%
FLASH_D2
UG952_c1_05_060514
AC701 Evaluation Board
UG952 (v1.4) August 6, 2019
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