Cn18 Power Connector; Cn19 St-Link/V2-1 Programming Connector; Cn20 Tft Lcd Connector (Rgb); Cn21 St-Link/V2-1 Usb Micro-B Connector - ST STM32L4R9I-EVAL User Manual

UM2248
7.14

CN18 power connector

The STM32L4R9I-EVAL board is power-able with a DC 5 V power supply via the external
power supply jack (CN18) shown in
7.15

CN19 ST-LINK/V2-1 programming connector

The CN19 connector is used only for embedded ST-LINK/V2-1 programming during board
manufacturing. It is not populated by default and not for end-users.
7.16

CN20 TFT LCD connector (RGB)

A TFT-color LCD board is mounted on CN20. Refer to
7.17

CN21 ST-LINK/V2-1 USB Micro-B connector

The CN21 USB connector is used to connect on-board ST-LINK/V2-1 facility to a PC for
programming and debugging purposes.
Pin number
1
Figure

Figure 20. CN18 power-supply connector (front view)

DC +5V

Figure 21. CN21 USB Micro-B connector (front view)

Table 39. CN21 USB Micro-B connector (front view)

Description
V (power)
BUS
UM2248 Rev 4
20. The central pin of CN18 must be positive.
GND
Section 6.30
Pin number
4
Connectors
MS30721V1
for details.
Description
GND
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