STM32F732IE datasheet(36/226 Pages) STMICROELECTRONICS

部件名	STM32F732IE

功能描述	Arm® Cortex®-M7 32b MCUFPU, 462DMIPS, up to 512KB Flash 256164KB RAM, USB OTG HS/FS, 18 TIMs, 3 ADCs, 21 com IF

PDF	226 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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36 / 226 page

Functional overview

STM32F732xx STM32F733xx

36/226

DS11854 Rev 6

3.19

VBAT operation

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

super-capacitor, or from VDD when no external battery and an external super-capacitor

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 must 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.

Table 6. Timer feature comparison

Timer

type

Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Complem

entary

output

Max

interface

clock

(MHz)

Max

timer

clock

(MHz)(1)

Advanced

-control

TIM1,

TIM8

16-bit

Up,

Down,

Up/down

Any

integer

between 1

and 65536

Yes

108

216

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