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STM32L4R9ZIT6 Datasheet(PDF) 24 Page - STMicroelectronics

Part # STM32L4R9ZIT6
Description  Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 150DMIPS, up to 2MB Flash, 640KB SRAM, LCD-TFT & MIPI DSI, ext. SMPS
PDF  306 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L4R9ZIT6 Datasheet(HTML) 24 Page - STMicroelectronics

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Functional overview
STM32L4R5xx, STM32L4R7xx and STM32L4R9xx
24/306
DocID030321 Rev 3
VREF- and VREF+ pins are not available on all packages. When not available, they are
bonded to VSSA and VDDA, respectively.
When the VREF+ is double-bonded with VDDA in a package, the internal voltage
reference buffer is not available and must be kept disable (refer to datasheet for
packages pinout description).
VREF- must always be equal to VSSA.
An embedded linear voltage-regulator is used to supply the internal digital power VCORE.
VCORE is the power supply for digital peripherals, SRAM1, SRAM2 and SRAM3. The Flash
is supplied by VCORE and VDD.
Figure 3. STM32L4R5xx and STM32L4R7xx power supply overview
MSv49328V1
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



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