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STM32F050C4 bảng dữ liệu(PDF) 76 Page - STMicroelectronics

tên linh kiện STM32F050C4
Giải thích chi tiết về linh kiện  Low- and medium-density advanced ARM-based 32-bit MCU with up to 32 Kbytes Flash, timers, ADC and comm. interfaces
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STM32F050C4 bảng dữ liệu(HTML) 76 Page - STMicroelectronics

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Electrical characteristics
STM32F050xx
76/97
Doc ID 023683 Rev 1
tCOUNTER 16-bit counter clock period
1
65536
tTIMxCLK
fTIMxCLK = 48 MHz
0.0208
1365
µs
tMAX_COUNT
Maximum possible count
with 32-bit counter
-
65536 × 65536
tTIMxCLK
fTIMxCLK = 48 MHz
-
89.48
s
1.
TIMx is used as a general term to refer to the TIM1, TIM2, TIM3, TIM6, TIM14, TIM15, TIM16 and TIM17
timers.
Table 55.
IWDG min/max timeout period at 40 kHz (LSI) (1)
1.
These timings are given for a 40 kHz clock but the microcontroller’s internal RC frequency can vary from
30 to 60 kHz. Moreover, given an exact RC oscillator frequency, 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
/4
0
0.1
409.6
ms
/8
1
0.2
819.2
/16
2
0.4
1638.4
/32
3
0.8
3276.8
/64
4
1.6
6553.6
/128
5
3.2
13107.2
/256
6 or 7
6.4
26214.4
Table 56.
WWDG min-max timeout value @48 MHz (PCLK)
Prescaler
WDGTB
Min timeout value
Max timeout value
Unit
1
0
0.0853
5.4613
ms
2
1
0.1706
10.9226
4
2
0.3413
21.8453
8
3
0.6826
43.6906
Table 54.
TIMx(1) characteristics (continued)
Symbol
Parameter
Conditions
Min
Max
Unit



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