7.2 Octo‑SPI flash memory
The Octo‑SPI flash memory has the following characteristics:
• 1 Gbit
• 3V3
• 133 MHz maximum frequency
• DTR
It is connected to the Hexadeca‑SPI (HSPI) interface of the STM32U5G9ZJT6Q MCU.
Table 9. OCTOSPI connection
STM32 pin STM32 I/O STM32 signal Octo‑SPI signal Octo‑SPI pin
28 NRST NRST RESET# A4
81 PH9 HSPI1_NCS CS# C2
97 PI3 HSPI1_CLK SCLK B2
96 PI2 HSPI1_DQS0 DQS C3
84 PH10 HSPI1_IO0 SI/SIO0 D3
85 PH11 HSPI1_IO1 SO/SIO1 D2
86 PH12 HSPI1_IO2 SIO2 C4
87 PH13 HSPI1_IO3 SIO3 D4
90 PH14 HSPI1_IO4 SIO4 D5
91 PH15 HSPI1_IO5 SIO5 E3
92 PI0 HSPI1_IO6 SIO6 E2
93 PI1 HSPI1_IO7 SIO7 E1
- - - ECS# A5
The embedded footprint is also compatible with many references in BGA24 packages. Check the compatibility of
the memory datasheet versus the schematic.
7.3
Virtual COM port
A Virtual COM port is available on the STLINK-V3EC USB connector (CN8).
The communication between the target and ST-LINK MCUs is enabled on the USART1 (PA9/PA10).
UM3223
Board functions
UM3223 - Rev 1
page 19/37
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