STM32MP151A datasheet(42/253 Pages) STMICROELECTRONICS

42 / 253 page

Functional overview

STM32MP151A/D

42/253

DS12500 Rev 3

3.32

Boot and security and OTP control (BSEC)

The BSEC (boot and security and OTP control) is intended to control an OTP (one time

programmable) fuse box, used for embedded non-volatile storage for device configuration

and security parameters. Some part of BSEC should be configured as accessible by secure

software only.

3.33

Timers and watchdogs

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

timers, five low-power timers, three watchdogs, a SysTick timer in Cortex-M4 and 4 system

timers in Cortex-A7.

All timer counters can be frozen in debug mode.

Table 4 compares the features of the advanced-control, general-purpose, basic and low-

power timers.

Table 4. Timer feature comparison

Timer

type

Timer

Counter

resolution

Counter

type

Prescaler

factor

DMA

request

generation

Capture/

compare

channels

Comple-

mentary

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

104.5

209

General

purpose

TIM2,

TIM5

32-bit

Up,

down,

up/down

Any integer

between 1

and 65536

Yes

104.5

209

TIM3,

TIM4

16-bit

Up,

down,

up/down

Any integer

between 1

and 65536

Yes

104.5

209

TIM12

16-bit

Any integer

between 1

and 65536

104.5

209

TIM13,

TIM14

16-bit

Any integer

between 1

and 65536

104.5

209

TIM15

16-bit

Any integer

between 1

and 65536

Yes

104.5

209

TIM16,

TIM17

16-bit

Any integer

between 1

and 65536

Yes

104.5

209

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