STM32F373VC(2013) 查看數據表（PDF） - STMicroelectronics

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STM32F373VC
(Rev.:2013)

ARM Cortex-M4 32b MCU+FPU, up to 256KB Flash+32KB SRAM timers, 4 ADCs (12/16-bit), 3 DACs, 2 comp., 2.0-3.6 V operation

STMicroelectronics 

Electrical characteristics

STM32F37xxx

Table 69. IWDG min/max timeout period at 40 kHz (LSI) (continued)(1)(2)

Prescaler divider PR[2:0] bits

Min timeout (ms) RL[11:0]=

0x000

Max timeout (ms) RL[11:0]=

0xFFF

/32

3

0.8

/64

4

1.6

/128

5

3.2

/256

7

6.4

3276.8

6553.6

13107.2

26214.4

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.

2. Data based on characterization results, not tested in production.

Table 70. WWDG min-max timeout value @72 MHz (PCLK)

Prescaler

WDGTB

Min timeout value

Max timeout value

1

0

0.05687

3.6409

2

1

0.1137

7.2817

4

2

8

3

0.2275

0.4551

14.564

29.127

106/131

DocID022691 Rev 4

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