7.5.3
Limitations and hardware configuration
I2C2 (PH4/PH5) is shared between EXT I
2
C module CN24, MB1486 Wi
‑
Fi
®
module U24, MFX I/O expander U25,
audio codec U48, MB1379 camera module CN2, and MB1370 LCD touch panel CN30.
7.5.4
Interface
Figure 26.
EXT I
2
C connector CN24
1
7
2
8
Table 31.
EXT I
2
C connector CN24
Pin number
Description
Pin number
Description
1
I2C2_SDA (PH5)
5
+3V3
2
NC
6
NC
3
I2C2_SCL (PH4)
7
GND
4
RESET (MFX_GPO6)
8
NC
7.6
32-bit SDRAM
7.6.1
Description
8 Mx32bit SDRAM ISSI IS42S32800J-6BLI is connected to SDRAM bank1 of FMC interface of
STM32H7B3LIH6QU.
7.6.2
Operating voltage
The STM32H7B3LIH6QU FMC interface (SDRAM, SRAM, and NOR) can only be at 3.3 V on this board.
7.6.3
Limitations and hardware configuration
Limitation with secondary function: OCSPI2.
UM2662
32-bit SDRAM
UM2662
-
Rev 1
page 37/95
