Vbus Voltage-Sensing; Cc Management; Limitations; Temperature Sensor - ST STM32G474E-EVAL User Manual

UM2514
5.23.4 V voltage-sensing
BUS
The CN22 USB Type-C
the voltage-sensing carried by the STM32G474QET6 ADC port PC0. It can be able to
monitor the right power level applied on the V
5.23.5

CC management

An embedded feature of the STM32G474QET6 supports the dead battery function. It can be
enabled or disabled by enabling signals by setting JP15 (CC1) or JP14 (CC2). Refer to
Table 22
Jumper
JP15
JP14
5.23.6

Limitations

UCPD operation is exclusive to motor control and JTAG JTRST signal PB4.
Due to the share of PA9 and PA10 terminals of the STM32G474QET6 by multiple
peripherals, if USBPD is used as part of the USART1 port, it cannot be used as RS-232 or
RS485 port and VCP peripheral.
Only SWD may be used for dead battery applications. It is impossible to use the JTAG due
to the pull-down on the PB4.
For no-dead battery applications, the alternative to using the JTAG is:
•
Either pulling low the DBCC2 pin (PA10)
•
Or putting an external pull-up on the PB4 (R183)
5.24

Temperature sensor

An STTS751 temperature sensor is connected to the I2C3 bus of the STM32G474QET6. It
shares the same I2C3 bus with MFX, audio, and EXT_I2C connector.
2
The I C address of the temperature sensor is 0x90 or 0x91.
Note: The temperature result measured from STTS751 may be a little higher than the
ambient temperature due to the power dissipation of components on the board.
®
receptacle is equipped with a voltage-sensing stage that matches
for details.

Table 22. Dead-battery related jumpers

Setting
1 2 3
1 2 3
2
1 3
1 2 3
port.
BUS
Default setting.
The embed dead battery function is enabled.
The embed dead battery function is disabled.
Default setting.
The embed dead battery function is enabled.
The embed dead battery function is disabled.
UM2514 Rev 5
Hardware layout and configuration
Configuration
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