Board connectors UM2448
26/49 UM2448 Rev 6
8.2.5 CAN connector
The CN5 connector allows the connection to a CAN target without a CAN transceiver. The 
related pinout for this connector is listed in 
Table 10.
 
8.2.6 SWD connector
The CN6 connector allows the connection to an STM32 target in SWD mode through wires. 
It is not recommended for high performance. The related pinout for this connector is listed in 
Table 11.
 
8.2.7 UART/I
2
C/CAN bridge connector
Some bridge functions are provided on a 2x5-pin connector with 1.27 mm pitch CN7. The 
related pinout is listed in 
Table 12. This connector provides CAN logic signals (Rx/Tx), which 
can be used as input for an external CAN transceiver. Prefer using the MB1440 CN5 
connector for CAN connection otherwise.
3GND
4 T_NRST
1. Input for STLINK-V3SET.
Table 9. SWIM connector CN4 (continued)
Pin number Description
Table 10. CAN connector CN5 
Pin number Description
1T_CAN_VCC
(1)
1. Input for STLINK-V3SET.
2 T_CAN_TX
3T_CAN_RX
Table 11. SWD (wires) connector CN6 
Pin number Description
1T_VCC
(1)
1. Input for STLINK-V3SET.
2 T_SWCLK
3GND
4T_SWDIO
5 T_NRST
6T_SWO
(2)
2. Optional, required only for Serial Wire Viewer (SWV) trace.