Limitations; Tft Lcd Panel; Table 20. Idd Measurement-Related Jumper Settings; Table 21. Cn20 And Cn24 Tft Lcd Connectors - ST STM32G474E-EVAL User Manual

UM2514
MCU supply voltage (VDD_MCU line) not to exceed 3.3 V. The reason is that there are
components on the STM32G474E-EVAL supplied from 3.3 V, and they communicate with
the MCU through I/O ports. Voltage exceeding 3.3 V on the MCU output port may inject
current into 3.3 V-supplied peripheric I/Os and false the MCU current consumption
measurement.
Table 20
Jumper
JP13
5.21.3

Limitations

1. The MFX is exclusive to differential ADC and MC operations.
2. The IDD measurement operating voltage is in the range of 2.05 V to 3.6 V. This applies
only to the MB1397-based boards within the following range of serial numbers:
–
–
–
It can be used as a bypass mode for normal MCU working. Refer to
configuration.
5.22

TFT LCD panel

The STM32G474E-EVAL is delivered with MB895, a daughterboard plugged into the CN20
and CN24 connectors. It bears a TFT 2.4-inch color TFT LCD panel with a resistive
touchscreen and an on-board controller. The TFT LCD is connected to the SPI2 port of the
STM32G474QET6.
Thanks to level shifters on all signal lines, the TFT LCD panel works with the entire
operating voltage range of the STM32G474E-EVAL.
CN20
terminal
1
2
3
4
5
shows the jumper settings associated with the IDD measurement on the board.

Table 20. IDD measurement-related jumper settings

setting
2
1 3
1 2 3
MB1397-G474E: A191000001 -A191000170
MB1397-G474EMC: A191000001- A191000100
MB1397-G484E: A191000001-A191000030

Table 21. CN20 and CN24 TFT LCD connectors

Terminal
name
- CS PC9
- SCL PF9
- SDI PB15
- RS -
- WR -
Default setting.
STM32G474QET6 has a built-in circuit to measure its own
current consumption.
IDD measurement is not available, bypass mode only for
STM32G474QET6 VDD_MCU power supply.
CN24
MCU port
terminal
1
2
3
4
5
UM2514 Rev 5
Hardware layout and configuration
Configuration
Table 20
Terminal
name
VDD
VCI
GND
GND
BL_VDD
for the JP13
Power port
3.3 V
3.3 V
GND
GND
5 V or 3.3 V
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