Datasheet

Functional overview STM32F334x4 STM32F334x6 STM32F334x8
30/121 DocID025409 Rev 8
3.19 Development support
3.19.1 Serial-wire JTAG debug port (SWJ-DP)
The Arm SWJ-DP Interface is embedded, and is a combined JTAG and serial wire debug
port that enables either a serial wire debug or a JTAG probe to be connected to the target.
The JTAG TMS and TCK pins are shared respectively with SWDIO and SWCLK and a
specific sequence on the TMS pin is used to switch between JTAG-DP and SW-DP.
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