ST STM32U575I-EV, Руководство пользователя, Страница: 63 / 105

7.25.3 EEPROM I/O interface
The EEPROM I
2
C interface supports all I
2
C
‑
bus modes with speeds up to 1 MHz. The I
2
C
‑
bus base address is
0xA0
(
0b1010000x
).
Table 48 describes the hardware configuration for the EEPROM interface.
Table 48. Hardware I/O configuration for the EEPROM interface
I/O Hardware
Setting
(1) Configuration
PG8 JP11
[1-2]
PG8 is used as I2C3_SDA to interface the sensor like the 3D
accelerometer and the 3G gyroscope, but also the I
2
C EEPROM and the
external I
2
C connector.
[2-3] PG8 is used as RS-232 or STMod+ USART.
PG7 JP10
[1-2]
PG7 is used as I2C3_SCL to interface the sensor like the 3D
accelerometer and the 3G gyroscope, but also the I
2
C EEPROM and the
external I
2
C connector.
[2-3] PG8 is used as RS-232 or STMod+ USART.
PB11 SB14
ON
PB11 is used as I2C2_SDA to interface the audio codec, MFX, UCPD, CTP,
the camera, STMod+, and optionally the sensor like the 3D accelerometer and
the 3G gyroscope, but also the I
2
C EEPROM and the external I
2
C connector
(SB49 ON).
OFF
PB11 is not used as I
2
C for the sensor, the EEPROM, and the external I
2
C
connector.
PB10 SB13
ON
PB10 is used as I2C2_SCL to interface the Audio Codec, MFX, UCPD, CTP,
the camera, STMod+, and optionally the sensor like the 3D accelerometer and
the 3G gyroscope, but also the I
2
C EEPROM and the external I
2
C connector
(SB46 ON).
OFF
PB10 is not used as I
2
C for the sensor, the EEPROM, and the external
I
2
C connector.
1. The default configuration is shown in bold.
7.26 EXT_I2C connector
7.26.1 Description
CN4 EXT_I2C connector can be connected to the I
2
C
‑
bus daughterboard. MFX_GPIO8 of MFX MCU provides
EXT_RESET.
7.26.2 Operating voltage
CN4 connector pin 4 is connected to VDD. Therefore, the external daughterboard must be compliant with the
MCU normal
‑
voltage range from 2.7 to 3.3 V, or low
‑
voltage range from 1.7 to 3.3 V.
7.26.3 EXT_I2C I/O interface
The EXT_I2C connector can accept a daughterboard that can have a different I
2
C base address. Be careful not
to use a daughterboard with an I
2
C base address already used in the STM32U575I-EV Evaluation board to avoid
I
2
C conflict.
STM32U575I-EV
EXT_I2C connector
UM2854 - Rev 1
page 63/105