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UM2179 bảng dữ liệu(PDF) 16 Page - STMicroelectronics

tên linh kiện UM2179
Giải thích chi tiết về linh kiện  STM32 Arm®-based microcontroller in LQFP144 package
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UM2179 bảng dữ liệu(HTML) 16 Page - STMicroelectronics

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Hardware layout and configuration
UM2179
16/48
UM2179 Rev 9
5.3
Cuttable PCB
The STM32 Nucleo-144 board is divided into two parts: ST-LINK and target STM32. The
ST-LINK part of the PCB can be cut out to reduce the board size. In this case the remaining
target STM32 part can only be powered by VIN, E5V and 3.3 V on the ST morpho connector
CN11, or by VIN and 3.3 V on the ST Zio connector CN8. It is still possible to use the ST-
LINK part to program the STM32, using wires between the CN5 and SWD available signals
on the ST morpho connector (SWCLK CN11 pin 15, SWDIO CN11 pin 13 and NRST CN11
pin 14, same I/O level as VDD_MCU).
5.4
Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated in the STM32 Nucleo-144
board.
The embedded ST-LINK/V2-1 supports only SWD for STM32 devices. For information about
debugging and programming features refer to the ST-LINK/V2 in-circuit
debugger/programmer for STM8 and STM32 user manual (UM1075), which describes in
details all the ST-LINK/V2 features.
The changes versus ST-LINK/V2 version are listed below. New features supported on ST-
LINK/V2-1:
•
USB software re-enumeration
•
Virtual COM port interface on USB
•
Mass storage interface on USB
•
USB power management request for more than 100 mA power on USB
Features not supported on ST-LINK/V2-1:
•
SWIM interface
•
Minimum supported application voltage limited to 3 V
There are two different ways to use the embedded ST-LINK/V2-1, depending on the jumper
state (see Table 4):
•
Program/debug the STM32 on board
•
Program/debug the STM32 in an external application board, using a cable connected to
SWD connector CN5
Table 4. CN4 states of the jumpers
Jumper state
Description
Both CN4 jumpers ON
ST-LINK/V2-1 functions enabled for on-board programming
(default). See Section 5.4.3.
Both CN4 jumpers OFF
ST-LINK/V2-1 functions enabled for external CN5 connector
(SWD supported). See Section 5.4.4.



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