STM32L475VC datasheet(160/193 Pages) STMICROELECTRONICS

部件名	STM32L475VC

功能描述	Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio

PDF	193 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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160 / 193 page

Electrical characteristics

STM32L475xx

160/193

DocID027692 Rev 2

Table 79. TIMx(1) characteristics

1. TIMx, is used as a general term in which x stands for 1,2,3,4,5,6,7,8,15,16 or 17.

Symbol

Parameter

Conditions

Min

Max

Unit

tres(TIM)

Timer resolution time

-1

tTIMxCLK

fTIMxCLK = 80 MHz

12.5

fEXT

Timer external clock

frequency on CH1 to CH4

-0

fTIMxCLK/2

MHz

fTIMxCLK = 80 MHz

MHz

ResTIM

Timer resolution

TIMx (except TIM2

and TIM5)

-16

bit

TIM2 and TIM5

tCOUNTER

16-bit counter clock

period

65536

tTIMxCLK

fTIMxCLK = 80 MHz 0.0125

819.2

µs

tMAX_COUNT

Maximum possible count

with 32-bit counter

65536 × 65536

tTIMxCLK

fTIMxCLK = 80 MHz

53.68

Table 80. IWDG min/max timeout period at 32 kHz (LSI)(1)

1. The exact timings still depend on the phasing of the APB interface clock versus the LSI clock so that there

is always a full RC period of uncertainty.

Prescaler divider

PR[2:0] bits

Min timeout RL[11:0]=

0x000

Max timeout RL[11:0]=

0xFFF

Unit

0.125

512

0.250

1024

/16

0.500

2048

/32

1.0

4096

/64

2.0

8192

/128

4.0

16384

/256

6 or 7

8.0

32768

Table 81. WWDG min/max timeout value at 80 MHz (PCLK)

Prescaler

WDGTB

Min timeout value

Max timeout value

Unit

0.0512

3.2768

0.1024

6.5536

0.2048

13.1072

0.4096

26.2144

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