STM32F302CBT6TR 데이터 시트보기 (PDF) - STMicroelectronics

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STM32F302CBT6TR

ARM®-based Cortex®-M4 32b MCU+FPU, up to 256KB Flash+ 40KB SRAM, 2 ADCs, 1 DAC ch., 4 comp, 2 PGA, timers, 2.0-3.6 V

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Electrical characteristics

STM32F302xB STM32F302xC

Table 59. IWDG min/max timeout period at 40 kHz (LSI) (1)

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

/16

2

0.4

/32

3

0.8

/64

4

1.6

/128

5

3.2

/256

7

6.4

819.2

1638.4

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.

Table 60. WWDG min-max timeout value @72 MHz (PCLK)(1)

Prescaler

WDGTB

Min timeout value

Max timeout value

1

0

0.05687

3.6409

2

1

4

2

8

3

0.1137

0.2275

0.4551

7.2817

14.564

29.127

1. Guaranteed by design.

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