Table 172. Sw Debug Port Pins - ST STM32L0x3 Reference Manual

RM0367
It also includes debug features dedicated to the STM32L0x3 microcontrollers:
•
Flexible debug pinout assignment
•
MCU debug box (support for low-power modes, control over peripheral clocks, etc.)
Note: For further information on debug functionality supported by the Arm
refer to the Cortex
documentation).
33.2 Reference Arm
•
Cortex
It is available from www.infocenter.arm.com
•
Arm
•
Arm
33.3 Pinout and debug port pins
The STM32L0x3 MCUs are available in various packages with different numbers of
available pins.
33.3.1 SWD port pins
Two pins are used as outputs for the SW-DP as alternate functions of general purpose I/Os.
These pins are available on all packages.
SW-DP pin name
SWDIO
SWCLK
33.3.2 SW-DP pin assignment
After reset (SYSRESETn or PORESETn), the pins used for the SW-DP are assigned as
dedicated pins which are immediately usable by the debugger host.
However, the MCU offers the possibility to disable the SWD port and can then release the
associated pins for general-purpose I/O (GPIO) usage. For more details on how to disable
SW-DP port pins, please refer to
mapping on page
®
-M0+ Technical Reference Manual (see
®
documentation
®
-M0+ Technical Reference Manual (TRM)
®
Debug Interface V5
®
CoreSight Design Kit revision r1p1 Technical Reference Manual

Table 172. SW debug port pins

240.
SW debug port
Type Debug assignment
IO Serial Wire Data Input/Output
I Serial Wire Clock
Section 9.3.2: I/O pin alternate function multiplexer and
RM0367 Rev 7
Debug support (DBG)
®
®
Cortex -M0+ core,
Section 33.2: Reference Arm®
assignment
PA13
PA14
Pin
957/1043
970