STM32F722IC datasheet(31/229 Pages) STMICROELECTRONICS

No. de pieza	STM32F722IC

Descripción Electrónicos	Arm Cortex-M7 32b MCUFPU, 462DMIPS, up to 512KB Flash

PDF	229 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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31 / 229 page

DS11853 Rev 6

31/229

STM32F722xx STM32F723xx

Functional overview

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

Reset by other source than

power supply supervisor

STM32F722IC Datasheet(PDF) 31 Page - STMicroelectronics