STM32F301C8T7(2014) 查看數據表（PDF） - STMicroelectronics

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STM32F301C8T7
(Rev.:2014)

ARM® Cortex®-M4 32-bit MCU+FPU, up to 64 KB Flash, 16 KB SRAM, ADC, DAC, COMP, Op-Amp, 2.0 – 3.6 V

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Pin Number

Table 13. STM32F301x6/8 pin definitions (continued)

Pin name

(function after reset)

Alternate

functions

Additional

functions

31 A5 44 60

BOOT0

I

B

Boot memory selection

- B5 45 61

PB8

- C5 46 62

PB9

I/O

FTf

I/O

FTf

TIM16_CH1, TSC_SYNC,

I2C1_SCL, USART3_RX,

TIM1_BKIN, EVENTOUT

TIM17_CH1, I2C1_SDA, IR-OUT,

USART3_TX, COMP2_OUT,

EVENTOUT

32 D3 47 63

VSS_1

S

-

Digital ground

"1" B7 48 64

VDD_1

S

-

Digital power supply

1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch sinks only a limited amount of current (3 mA), the use of GPIO PC13 to PC15 in output

mode is limited:

- The speed should not exceed 2 MHz with a maximum load of 30 pF

- These GPIOs must not be used as current sources (e.g. to drive an LED).

After the first backup domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the content of the Backup registers which is not reset by

the main reset. For details on how to manage these GPIOs, refer to the Battery backup domain and BKP register description sections in the RM0366 reference manual.

2. These GPIOs offer a reduced touch sensing sensitivity. It is thus recommended to use them as sampling capacitor I/O.

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