Limitations; Operating Voltage; Mfx Mcu; Mfx - ST STM32G474E-EVAL User Manual

Hardware layout and configuration
5.20.1

Limitations

Quad-SPI flash memory device operation is exclusive to motor control.
5.20.2

Operating voltage

The voltage of the MT25QL512ABB8ESF-0SIT Quad-SPI flash memory device is in the
range of 2.7 to 3.6 V.
5.21

MFX MCU

The MFX MCU is used as MFX (multifunction expander) and IDD measurement.
5.21.1

MFX

The MFX circuit on the STM32G474E-EVAL board acts as IO-expander. The
communication interface between MFX and STM32G474QET6 is the I2C3 bus. The signals
connected to MFX are listed in
Pin number
of MFX
15
16
17
18
19
20
26
27
28
29
30
31
32
33
39
40
5.21.2

IDD measurement

STM32G474QET6 has a built-in circuit to measure its current consumption (IDD) in Run
and Low-power modes, except for Shutdown mode. It is strongly recommended for the
38/66
Table

Table 19. MFX signals

Pin name
MFX functions
of MFX
PA5 MFX_GPIO5
PA6 MFX_GPIO6
PA7 MFX_GPIO7
PB0 MFX_GPIO0
PB1 MFX_GPIO1
PB2 MFX_GPIO2
PB13 MFX_GPIO13
PB14 MFX_GPIO14
PB15 MFX_GPIO15
PA8 MFX_GPIO8
PA9 MFX_GPIO9
PA10 MFX_GPIO10
PA11 MFX_GPIO11
PA12 MFX_GPIO12
PB3 MFX_GPIO3
PB4 MFX_GPIO4
UM2514 Rev 5
19.
Function of
STM32H7XXI-EVAL
uS_Detect
LED2
LED4
JOY_SEL
JOY_DOWN
JOY_LEFT
uSD_LCD_SPI2_DIR
-
EXT_RESET
SmartCard_1V8
SmartCard_3/5V
SmartCard_OFF
SmartCard_CMDVCC
SmartCard_RST
JOY_RIGHT
JOY_UP
UM2514
Direction
Terminal
device
(for MFX)
Input microSD™
Output LEDs
Output LEDs
Input Joystick
Input Joystick
Input Joystick
microSD™ or
Output
LCD
- -
Output EXT_I2C
Output Smartcard
Output Smartcard
Output Smartcard
Output Smartcard
Output Smartcard
Input Joystick
Input Joystick