STM32L433CB datasheet(73/225 Pages) STMICROELECTRONICS

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DS11449 Rev 5

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STM32L433xx

Pinouts and pin description

43 43 D4 A6 59 58 C3 93

PB7

I/O FT_fla -

LPTIM1_IN2,

I2C1_SDA,

USART1_RX,

TSC_G2_IO4,

LCD_SEG21,

EVENTOUT

COMP2_INM,

PVD_IN

44 44 A5 C5 60 59 B4 94

PH3-

BOOT0

I/O

EVENTOUT

45 45 B5 C6 61 60 B3 95

PB8

I/O

FT_fl

I2C1_SCL, CAN1_RX,

LCD_SEG16,

SDMMC1_D4,

SAI1_MCLK_A,

TIM16_CH1,

EVENTOUT

46 46 C5 B6 62 61 A3 96

PB9

I/O

FT_fl

IR_OUT, I2C1_SDA,

SPI2_NSS,

CAN1_TX,

LCD_COM3,

SDMMC1_D5,

SAI1_FS_A,

EVENTOUT

- 62

VDD12

PE0

I/O

FT_l

LCD_SEG36,

TIM16_CH1,

EVENTOUT

PE1

I/O

FT_l

LCD_SEG37,

EVENTOUT

47 47 A6 A7 63 63 D4 99

VSS

48 48 A7 A8 64 64 E4 100 C4

VDD

1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current

(3 mA), the use of GPIOs 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).

2. After a Backup domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the content of

the RTC registers which are not reset by the system reset. For details on how to manage these GPIOs, refer to the Backup

domain and RTC register descriptions in the RM0394 reference manual.

3. After reset, these pins are configured as JTAG/SW debug alternate functions, and the internal pull-up on PA15, PA13, PB4

pins and the internal pull-down on PA14 pin are activated.

Table 15. STM32L433xx pin definitions (continued)

Pin Number

Pin functions

Alternate functions

Additional

functions

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