STM32F722IC datasheet(38/229 Pages) STMICROELECTRONICS

部件名	STM32F722IC

功能描述	Arm Cortex-M7 32b MCUFPU, 462DMIPS, up to 512KB Flash

PDF	229 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

38 / 229 page

Functional overview

STM32F722xx STM32F723xx

38/229

DS11853 Rev 6

3.19

VBAT operation

The VBAT pin allows to power the device VBAT domain from an external battery, an external

supercapacitor, or from VDD when no external battery and an external supercapacitor are

present.

The VBAT operation is activated when VDD is not present.

The VBAT pin supplies the RTC, the backup registers and the backup SRAM.

Note:

When the microcontroller is supplied from VBAT, external interrupts and RTC alarm/events

do not exit it from VBAT operation.

When the PDR_ON pin is connected to VSS (Internal Reset OFF), the VBAT functionality is

no more available and the VBAT pin should be connected to VDD.

3.20

Timers and watchdogs

The devices include two advanced-control timers, eight general-purpose timers, two basic

timers and two watchdog timers.

All timer counters can be frozen in debug mode.

Table 6 compares the features of the advanced-control, general-purpose and basic timers.

STM32F722IC 数据表(PDF) 38 Page - STMicroelectronics