6.3.5
Board power supply - VDDMMC
STM32H7B3I-EVAL can provide either 1.8 V or 3.3 V on VDDMMC power rail of the STM32H7B3LIH6QU
microcontroller.
Figure 17.
MCU Power: VDDMMC
This power rail can be used in different configurations:
•
Default configuration: VDDMMC is forced to 3.3V only.
•
SDIO2 configuration: VDDMMC is switched from 3.3 V to 1.8 V if necessary, and it can be powered off.
Default configuration (VDDMMC = 3.3 V only)
Important:
Some pins from STM32H7B3LIH6QU are supplied by VDDMMC, but are '3.3V only' and not linked to SDIO2 (Refer to
)
Table 12.
Pins supplied by VDDMMC but '3.3V only'
Pin name
Pin function
PB8
DCMI_D6 || MEMS_LED || MOTOR_DFSDM1_CKIN7
PB9
DCMI_D7 || DFSDM1_DATIN7
PD6
OCSPI1_IO6 || MOTOR_DFSDM1_CKIN4
PG9
DCMI_VSYNC/RDY
PG10
DCMI_D2 || FMC_NE3 || OCSPI2_IO6
PG11
DCMI_D3 || OCSPI2_IO7
PG12
OCSPI2_NCS
PG13
LED1
PG14
OCSPI1_IO7
UM2662
Power supply
UM2662
-
Rev 1
page 23/95
