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STM32H7 bảng dữ liệu(PDF) 190 Page - STMicroelectronics

tên linh kiện STM32H7
Giải thích chi tiết về linh kiện  32-bit Arm® Cortex®-M7 480MHz MCUs, up to 2MB flash, up to 1MB RAM, 46 com. and analog interfaces
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STM32H7 bảng dữ liệu(HTML) 190 Page - STMicroelectronics

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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
1-
tTIMxCLK
AHB/APBx
prescaler>4, fTIMxCLK =
140 MHz
1-
tTIMxCLK
fEXT
Timer external clock
frequency on CH1 to CH4 f
TIMxCLK = 240 MHz
0
fTIMxCLK/2
MHz
ResTIM
Timer resolution
-
16/32
bit
tMAX_COUNT
Maximum possible count
with 32-bit counter
--
65536 ×
65536
tTIMxCLK



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