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STM32L552CC bảng dữ liệu(PDF) 32 Page - STMicroelectronics

tên linh kiện STM32L552CC
Giải thích chi tiết về linh kiện  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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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32L552CC bảng dữ liệu(HTML) 32 Page - STMicroelectronics

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Functional overview
STM32L552xx
32/340
DS12737 Rev 6
3.9
Power supply management
The power controller (PWR) main features are:
•
Power supplies and supply domains
–
Core domains (VCORE)
–
VDD domain
–
Backup domain (VBAT)
–
Analog domain (VDDA)
–
VDDIO2 domain
–
VDDUSB for USB transceiver
•
System supply voltage regulation
–
SMPS step down converter
–
Voltage regulator (LDO)
•
Power supply supervision
–
POR/PDR monitor
–
BOR monitor
–PVD monitor
–
PVM monitor (VDDA, VDDUSB, VDDIO2)
–
Temperature thresholds monitor
–
Upper VDD voltage threshold monitor
•
Power management
–
Operating modes
–
Voltage scaling control
–
Low-power modes
•
VBAT battery charging
•
TrustZone security
3.9.1
Power supply schemes
The devices require a 1.71 V to 3.6 V VDD operating voltage supply. Several independent
supplies can be provided for specific peripherals:
•
VDD = 1.71 V to 3.6 V
VDD is the external power supply for the I/Os, the internal regulator and the system
analog such as reset, power management and internal clocks. It is provided externally
through the VDD pins.
•
VDDA = 1.62 V (ADCs/COMPs) / 1.8 V (DACs/OPAMPs) to 2.4 V (VREFBUF) to 3.6 V
VDDA is the external analog power supply for A/D converters, D/A converters, voltage
reference buffer, operational amplifiers and comparators. The VDDA voltage level is
independent from the VDD voltage and should preferably be connected to VDD when
these peripherals are not used.



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