6 Hardware layout and configuration
The STM32L5 Nucleo-144 board is designed around an STM32L552 microcontroller in an LFQFP 144-pin
package. Figure 3 shows the connections between the STM32 and its peripherals (ST-LINK/V2-1, push-button,
LEDs, USB, ST Zio connectors and ST morpho headers). Figure 4 and Figure 5 show the location of these
features on the STM32L5 Nucleo-144 board. The mechanical dimensions of the board are shown in Figure 6.
Figure 3. Hardware block diagram
ST-LINK/V2.1 Part
STM32L552ZE-Q
OSC_32
SWD
32 KHz
Crystal
VCP
UART
GPIOs
GPIO
LED
GPIO
Embedded
ST-LINK/V2-1
SWD
SWD
VCP
UART
USB
Micro-B
connector
B1
User
B2
RST
ARDUINO®
MORPHO
GPIO
ARDUINO®
MORPHO
5V
PWR SEL
5V
LED
JUMPER
COM
T_NRST
VCP
STLK RST
LEDLED
IDD1V8 / 3V3
USB
Type-C™
connector
GND
GND
GNDGND
UM2581
Hardware layout and configuration
UM2581 - Rev 2
page 8/48
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