6.2.1 SWJ-DP pins...........................................................30
6.2.2 Flexible SWJ-DP pin assignment ...........................................31
6.2.3 Internal pull-up and pull-down resistors on JTAG pins............................31
6.2.4 SWJ-DP connection with standard JTAG connector .............................32
6.3 Serial-wire debug (SWD) pin assignment .........................................32
6.3.1 Internal pull-up and pull-down on SWD pins ...................................32
6.3.2 SWD port connection with standard SWD connector.............................33
7 Recommendations................................................................34
7.1 PCB (printed circuit board)......................................................34
7.2 Component position ...........................................................34
7.3 Ground and power supply ......................................................34
7.4 Decoupling ...................................................................34
7.5 Other signals .................................................................35
7.6 Unused I/Os and features ......................................................35
8 Reference design .................................................................36
8.1 Description ...................................................................36
8.2 Design reference for a STM32U5 device (with and without SMPS) ....................37
Revision history .......................................................................42
List of tables ..........................................................................45
List of figures..........................................................................46
AN5373
Contents
AN5373 - Rev 6
page 44/47
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