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STM32L4P5CE Datasheet(PDF) 25 Page - STMicroelectronics

Part # STM32L4P5CE
Description  Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 150 DMIPS, up to 1-MB Flash memory, 320-KB SRAM, LCD-TFT, ext. SMPS
PDF  311 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L4P5CE Datasheet(HTML) 25 Page - STMicroelectronics

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DS12903 Rev 2
25/311
STM32L4P5xx
Functional overview
64
Figure 3. STM32L4P5xxxP with external SMPS power supply overview
During power-up and power-down phases, the following power sequence requirements
must be respected:
•
When VDD is below 1 V, other power supplies (VDDA, VDDIO2 and VDDUSB) must remain
below VDD +300 mV.
•
When VDD is above 1 V, all power supplies are independent.
•
During the power-down phase, VDD can temporarily become lower than other supplies
only if the energy provided to the MCU remains below 1 mJ; this allows external
decoupling capacitors to be discharged with different time constants during the power-
down transient phase.
MSv49333V1
VDDA domain
Backup domain
Standby circuitry
(Wakeup logic,
IWDG)
Voltage regulator
Low voltage detector
LSE crystal 32 K osc
BKP registers
RCC BDCR register
RTC
I/O ring
VCORE domain
Temp. sensor
Reset block
3 x PLL, HSI, MSI
Flash memory
USB transceivers
VDDUSB
VDDIO2
VDDIO1
I/O ring
PG[15:2]
VDDIO2
VDDA
VSSA
VSS
VSS
VDDIO2 domain
VDD domain
VCORE
VSS
VDD
VBAT
Core
SRAM1
SRAM2
SRAM3
Digital
peripherals
2 x D/A converters
1 x A/D converter
2 x comparators
2 x operational amplifiers
Voltage reference buffer
2x VDD12



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