ST STM32L562E-DK, User Manual, Page: 26 / 61

In addition to the DP/DM I/Os directly connected to the USB Type-C
™
connector, 5 I/Os are also used for UCPD
configuration: Configuration Channel (CCx), VBUS-SENSE, UCPD Dead Battery (DBn) and UCPD_FAULT (FLT)
feature.
To protect STM32L562E-DK from USB over-voltage, a USB Type-C
™
PPS-compliant port protection is used,
TCPP01-M12, IC compliant with IEC6100-4-2 level 4.
•
Configuration Channel I/O: UCPD_CCx: These signals are connected to the associated CCx line of the USB
Type-C
™
connector through the STM USB port Protection TCPP01-M12. These lines are used for the
configuration channel lines (CCx) to select the USB Type-C
™
current mode. STM32L562E-DK only supports
SINK current mode.
• Dead Battery I/O: UCPD_DBn: This signal is connected to the associated DBn line of the TCPP01-M12. The
STM USB port Protection TCPP01-M12 manages internally the Dead Battery resistors.
• V
BUS
fault detection: UCPD_FLT: This signal is provided by the STM Type-C port Protection. It is used as
fault reporting to MCU after a bad V
BUS
level detection. By design, R45 set to 2.7 kΩ, the STM32L562E-DK
V
BUS
protection is set to 6 V maximum.
Table 16 describes the I/O configuration for the UCPD feature.
Table 16. I/O configuration for the UCPD feature
I/O HW Setting
(1)
Configuration
PA15 R42
OFF PA15 used as USB_C.CC1
ON PA15 shared between USB_C.CC1 and JTAG JTDI
PB15 - - PB15 used as USB_C.CC2 (No other muxing)
PA4 R33
OFF PA4 not used as VBUS_SENSE
ON PA4 shared between VBUS_SENSE and ARD_ADC.A2
PB5 JP5 ON
PB5 shared between USB-C.DB1 (Dead battery mode supported),
ARD.D11 and STMod+
PB14 - - PB14 used as USB-C.FLT (over-voltage fault reporting to MCU)
1. The default configuration is shown in bold.
6.8.5 USB Type-C™ connector
Figure 19 shows the pinout of the CN15 USB Type-C
™
connector.
Figure 19. CN15 USB Type-C
™
connector pinout
GND TX1+ TX1- V
BUS
CC1 D+ D- SBU1 V
BUS
RX2- RX2+ GND
GND RX1+ RX1- V
BUS
SBU2 D- D+ CC2 V
BUS
TX2- TX2+ GND
B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12
Table 17 describes the pinout of the CN15 USB Type-C
™
connector.
Table 17. CN15 USB Type-C
™
connector pinout
STM32 pin Signal name Pin Pin Signal name STM32 pin
- GND A1 B12 GND -
- TX1+ A2 B11 RX1+ -
- TX1- A3 B10 RX1- -
UM2617
USB Type-C™ FS port
UM2617 - Rev 2
page 26/61