EVK-NORA-W1 - User guide
UBX-22002764 - R01
Hardware description
Page 15 of 22
C1-Public
3.9
QSPI
EVK-NORA-W10 can be populated with a Quad SPI FLASH and a Quad SPI PSRAM. These can be
supplied via +3V3 or NORA-W10 module internal VDD-SPI supply. The selection between the two are
made by populating either R11 or R69 (U1) and R70 or R71 (U2).
Figure 14: Quad SPI FLASH and PSRAM EVK - schematic and EVK board view
Table 6: Quad SPI interface signal overview
Interface function
ESP32-S3 pin
NORA-W10 pin
Interface IC function
QSPI-CS0
28
E1
QSPI-CS1
32
C4
QSPI-CLK
33
F1
QSPI-IO3 HD
30
F2
QSPI-IO2 WP
31
D1
QSPI-IO1 Q
34
E2
QSPI-IO0 D
35
D2