Connectors
UM1668
40/70
DocID025151 Rev 2
Note:
GPIOx are I/O expander (U16) signals.
3.16 Power
connector
CN18
The STM32439I-EVAL evaluation board can be powered from a DC 5 V power supply via
the external power supply jack (CN18) shown in
Figure 20
. The central pin of CN18 must be
positive.
Figure 20. Power supply connector CN18
3.17
ST-LINK/V2 programming connector CN19
The connector CN19 is used only for embedded ST-LINK/V2 programming during board
manufacture. It is not populated by default and not for end-user usage.
3.18
TFT LCD connector CN20
A TFT color LCD board is mounted on CN20. Refer to
Section 2.18
for detail.
Table 31. MicroSD connector CN17
Pin number
Description
Pin number
Description
1
SDIO_D2(PC10)
6
Vss/GND
2
SDIO_D3(PC11)
7
SDIO_D0(PC8)
3
SDIO_CMD(PD2)
8
SDIO_D1(PC9)
4
+3.3V
9
GND
5
SDIO_CLK(PC12)
10
MicroSDcard_detect (GPIO15)
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