ST STM32F410 User Manual

Debug support (DBG) RM0401
734/771 RM0401 Rev 3
Figure 274. SWJ debug port
Figure 274 shows that the asynchronous TRACE output (TRACESWO) is multiplexed with
TDO. This means that the asynchronous trace can only be used with SW-DP, not JTAG-DP.
26.3.1 Mechanism to select the JTAG-DP or the SW-DP
By default, the JTAG-Debug Port is active.
If the debugger host wants to switch to the SW-DP, it must provide a dedicated JTAG
sequence on TMS/TCK (respectively mapped to SWDIO and SWCLK) which disables the
JTAG-DP and enables the SW-DP. This way it is possible to activate the SWDP using only
the SWCLK and SWDIO pins.
This sequence is:
1. Send more than 50 TCK cycles with TMS (SWDIO) =1
2. Send the 16-bit sequence on TMS (SWDIO) = 0111100111100111 (MSB transmitted
first)
3. Send more than 50 TCK cycles with TMS (SWDIO) =1
26.4 Pinout and debug port pins
The STM32F410 MCUs are available in various packages with different numbers of
available pins. As a result, some functionality (ETM) related to pin availability may differ
between packages.
TRACESWO
JTDO
JTDI
NJTRST
nTRST
TDI
TDO
SWJ-DP
TDO
TDI
nTRST
TCK
TMS
nPOTRST
JTAG-DP
nPOTRST
From
power-on
reset
DBGRESETn
DBGDI
DBGDO
DBGDOEN
DBGCLK
SW-DP
SWCLKTCK
SWDOEN
SWDO
SWDITMS
SWD/JTAG
select
JTMS/SWDIO
JTCK/SWCLK
(asynchronous trace)
ai17139

ST STM32F410 Specifications

General

Series	STM32F4
Core	ARM Cortex-M4
Max Clock Speed	100 MHz
Maximum CPU frequency	100 MHz
Program memory size	Up to 128 KB
Program memory type	Flash
SRAM	32 KB
RAM size	32 KB
GPIO Pins	Up to 50
Number of I/Os	Up to 50
ADC Channels	Up to 10
ADC	12-bit
DAC Channels	1
Timers	6
Communication Interfaces	I2C, SPI, USART, USB
Operating voltage	1.7 V to 3.6 V
Operating Temperature	-40°C to 85°C
Package	LQFP64