STM32H7 datasheet(190/357 Pages) STMICROELECTRONICS

Part #	STM32H7

Description	32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces

PDF	357 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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190 / 357 page

Electrical characteristics (rev Y)

STM32H742xI/G STM32H743xI/G

190/357

DS12110 Rev 10

6.3.31

Timer characteristics

The parameters given in Table 103 are guaranteed by design.

Refer to Section 6.3.15: I/O port characteristics for details on the input/output alternate

function characteristics (output compare, input capture, external clock, PWM output).

Table 103. TIMx characteristics(1)(2)

1. TIMx is used as a general term to refer to the TIM1 to TIM17 timers.

2. Guaranteed by design.

Symbol

Parameter

Conditions(3)

3. The maximum timer frequency on APB1 or APB2 is up to 240 MHz, by setting the TIMPRE bit in the

RCC_CFGR register, if APBx prescaler is 1 or 2 or 4, then TIMxCLK = rcc_hclk1, otherwise TIMxCLK = 4x

Frcc_pclkx_d2.

Min

Max

Unit

tres(TIM)

Timer resolution time

AHB/APBx prescaler=1

or 2 or 4, fTIMxCLK =

240 MHz

tTIMxCLK

AHB/APBx

prescaler>4, fTIMxCLK =

140 MHz

tTIMxCLK

fEXT

Timer external clock

frequency on CH1 to CH4 f

TIMxCLK = 240 MHz

fTIMxCLK/2

MHz

ResTIM

Timer resolution

16/32

bit

tMAX_COUNT

Maximum possible count

with 32-bit counter

65536 ×

65536

tTIMxCLK

STM32H7 Datasheet(PDF) 190 Page - STMicroelectronics

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