Table 13. Digital MEMS microphones selection
DETECn MEMS microphone daughterboard Digital MEMS microphone (U20)
HIGH ON OFF
LOW OFF ON
Note: The audio codec and digital MEMS microphones operate at 1.8 V and 3.3 V.
14.6
Octo‑SPI NOR flash memory
The STM32H573I-DK board includes a 512-Mbit Octo‑SPI NOR flash memory device, which is connected to the
OCTOSPI1 interface of the STM32H573IIK3Q microcontroller. The Octo‑SPI NOR flash memory device operates
in single transfer rate (STR) or double transfer rate (DTR) mode.
The RESETn of the flash memory is connected to the general reset (NRST) of the STM32H573I-DK board.
Note: The Octo
‑
SPI flash memory operates at 3.3 V only (JP2 must be fitted on [1-2]).
14.7 Virtual COM port
The serial interface USART1 (PA9/PA10) that supports the bootloader is directly available as the Virtual COM port
of a PC connected to the STLINK-V3EC USB Type-C
®
connector (CN10). The VCP configuration is the following:
• 115200 b/s
• 8-bit data
• No parity
• 1 stop bit
• No flow control
14.8
RF module
The STM32H573I-DK Discovery kit includes one MB1400 Wi‑Fi
®
module, which is based upon a 802.11 b/g/n-
compliant chipset.
Figure 12. MB1400 Wi‑Fi
®
module
The MB1400 Wi‑Fi
®
module is addressable over UART or SPI interface. By default, the MB1400 uses the SPI
interface (SPI5) to communicate with the STM32H573IIK3Q MCU.
The MB1400 Wi‑Fi
®
module does not require any operating system. It contains a complete and integrated TCP/IP
protocol stack that only requires AT commands to establish
Wi‑Fi
®
network access and to enable the
STM32H573I-DK with Wi‑Fi
®
communication.
Note:
1. As the MB1400 Wi
‑
Fi
®
module firmware might evolve during the lifetime of the Wi
‑
Fi
®
module product,
users must make sure the
MB1400 Wi
‑
Fi
®
module firmware is up to date before starting to use the
MB1400 Wi
‑
Fi
®
module.
Refer to the X-WIFI-EMW3080B product webpage to find the update procedure and the latest version of
the
MB1400 Wi
‑
Fi
®
module firmware.
2. The MB1400 Wi
‑
Fi
®
module works only at 3.3 V with the help of the onboard 3.3
‑
V regulator IC.
Consequently, when using the MB1400, the user must ensure that JP2 is fitted on [1-2] on the
STM32H573I-DK.
UM3143
Octo‑SPI NOR flash memory
UM3143 - Rev 1
page 25/53
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