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STM32F398VE 데이터시트(PDF) 120 Page - STMicroelectronics

부품명 STM32F398VE
상세설명  CRC calculation unit
PDF  151 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F398VE 데이터시트(HTML) 120 Page - STMicroelectronics

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Electrical characteristics
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DocID027227 Rev 2
Table 68. IWDG min/max timeout period at 40 kHz (LSI) (1)
1. These timings are given for a 40 kHz clock but the microcontroller 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 (ms) RL[11:0]=
0x000
Max timeout (ms) RL[11:0]=
0xFFF
/4
0
0.1
409.6
/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
7
6.4
26214.4
Table 69. WWDG min-max timeout value @72 MHz (PCLK)(1)
1. Guaranteed by design, not tested in production.
Prescaler
WDGTB
Min timeout value
Max timeout value
1
0
0.05687
3.6409
2
1
0.1137
7.2817
4
2
0.2275
14.564
8
3
0.4551
29.127



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