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STM32F479AI bảng dữ liệu(PDF) 31 Page - STMicroelectronics

tên linh kiện STM32F479AI
Giải thích chi tiết về linh kiện  ARMCortex-M4 32b MCUFPU, 225DMIPS, up to 2MB Flash/3844KB RAM, USB OTG HS/FS, Ethernet, FMC, dual Quad-SPI, Crypto, Graphical accelerator, Camera IF, LCD-TFT & MIPI DSI
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F479AI bảng dữ liệu(HTML) 31 Page - STMicroelectronics

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STM32F479xx
Functional overview
46
When the internal reset is OFF, the following integrated features are no more supported:
•
The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled
•
The brownout reset (BOR) circuitry must be disabled
•
The embedded programmable voltage detector (PVD) is disabled
•
VBAT functionality is no more available and VBAT pin should be connected to VDD.
All packages allow to disable the internal reset through the PDR_ON signal when connected
to VSS.
Figure 9. PDR_ON control with internal reset OFF
1. PDR_ON signal to be kept always low.
2.20
Voltage regulator
The regulator has four operating modes:
•
Regulator ON
–
Main regulator mode (MR)
–
Low power regulator (LPR)
–
Power-down
•
Regulator OFF
2.20.1
Regulator ON
On packages embedding the BYPASS_REG pin, the regulator is enabled by holding
BYPASS_REG low. On all other packages, the regulator is always enabled.



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