Board connectors UM2502
18/28 UM2502 Rev 2
RIGHT
17 Bridge I2C SDA I/O
18 Bridge GPIO0 I/O
19 Bridge GPIO1 I/O
20 Bridge GPIO2 I/O
21 Bridge GPIO3 I/O
22 5 V
(4)
O
23 Bridge SPI MISO I/O
24 GND S
25 Bridge SPI MOSI I/O
26 GND S
27 GND S
28 T_JTDI/NC
(5)
O
29 GND S
30 T_VCC
(6)
I
31 T_NRST O
32 T_SW_DIR O
1. RX signals are inputs for STLINK-V3MODS, outputs for the target.
2. SWO is optional, required only for Serial Wire Viewer (SWV) trace.
3. TX signals are outputs for STLINK-V3MODS, inputs for the target.
4. Can drive 5 V +/- 5% with a 200 mA maximum current.
5. NC means not required for SWD connection.
6. Input for STLINK-V3MODS.
5 V source output capability
Pin 22 of the right edge pin connector can drive a 5 V target with a maximum output current
of 200 mA. The 5 V is guaranteed to be in the +/- 5% range if the driven current does not
exceed 200 mA. Please notice that exceeding this maximum output current over 200 mA
may damage the device or cause communication issues with the host PC (A PC standard
USB connector cannot provide more than 500 mA by the USB port and STLINK-V3MODS
can request dynamic current surges during target devices programming).
Table 3. 32-pin edge connector for STLINK-V3MODS (continued)
Side Pin # Pin description Type
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