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STM32F722IC 데이터시트(PDF) 31 Page - STMicroelectronics

부품명 STM32F722IC
상세설명  Arm Cortex-M7 32b MCUFPU, 462DMIPS, up to 512KB Flash
PDF  229 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM32F722IC 데이터시트(HTML) 31 Page - STMicroelectronics

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DS11853 Rev 6
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STM32F722xx STM32F723xx
Functional overview
49
Figure 10. Power supply supervisor interconnection with internal reset OFF
The VDD specified threshold, below which the device must be maintained under reset, is
1.7 V (see Figure 11).
A comprehensive set of power-saving mode allows to design low-power applications.
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, except for the LQFP100, allow to disable the internal reset through the
PDR_ON signal when connected to VSS.
Figure 11. PDR_ON control with internal reset OFF
MS31383V4
NRST
VDD
PDR_ON
External VDD power supply supervisor
Ext. reset controller active when
VDD < 1.7 V
VDD
Application reset
signal
VSS
MS19009V7
V DD
time
PDR = 1.7 V
time
NRST
PDR_ON
PDR_ON
Reset by other source than
power supply supervisor



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