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STM32L552CEU6PTR 数据表(PDF) 141 Page - STMicroelectronics

部件名 STM32L552CEU6PTR
功能描述  Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 165 DMIPS, up to 512 KB Flash memory, 256 KB SRAM, SMPS
PDF  340 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32L552CEU6PTR 数据表(HTML) 141 Page - STMicroelectronics

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DS12737 Rev 6
141/340
STM32L552xx
Electrical characteristics
307
Figure 29. STM32L552xxxQ and STM32L562xxxQ power supply overview
1. Refer to Figure 3 for SMPS step down converter power supply scheme.
Note:
If the selected package has the SMPS step down converter option but the application does
not ever use the SMPS, it is recommended to set the SMPS power supply pins as follows:
VDDSMPS and VLXSMPS connected to VSS
V15SMPSconnected to VDD.
Caution:
Each power supply pair (VDD/VSS, VDDA/VSSA etc.) must be decoupled with filtering ceramic
capacitors as shown above. These capacitors must be placed as close as possible to, or
below, the appropriate pins on the underside of the PCB to ensure the good functionality of
the device.
MSv62919V1
VDDIO2
VDD
IO
logic
Kernel logic
(CPU, Digital
& Memories)
Backup circuitry
(LSE, RTC,
Backup registers)
IN
OUT
Regulator
GPIOs
1.55 – 3.6 V
IN
OUT
GPIOs
n x 100 nF
+1 x 4.7 μF
m x100 nF
IO
logic
+4.7 μF
m x VDDIO2
m x VSS
n x VSS
n x VDD
VBAT
VCORE
Power switch
VDDIO2
VDDIO1
ADCs/
DACs/
OPAMPs/
COMPs/
VREFBUF
VREF+
VREF-
VDDA
10 nF
+1 μF
VDDA
VSSA
VREF
100 nF
+1 μF
VSSSMPS
SMPS
2 x V15SMPS
VLXSMPS
VDDSMPS
VDD



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