STM32L151VD-X datasheet(39/119 Pages) STMICROELECTRONICS

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STM32L151VD-X STM32L152VD-X

Pin descriptions

PB4

I/O FT

NJTRST

TIM3_CH1/SPI1_MISO/

SPI3_MISO/

LCD_SEG8/NJTRST

COMP2_INP

PB5

I/O FT

PB5

TIM3_CH2/I2C1_SMBA/

SPI1_MOSI/

SPI3_MOSI/I2S3_SD/

LCD_SEG9

COMP2_INP

PB6

I/O FT

PB6

TIM4_CH1/I2C1_SCL/

USART1_TX

COMP2_INP

PB7

I/O FT

PB7

TIM4_CH2/I2C1_SDA/

USART1_RX

COMP2_INP/

PVD_IN

BOOT0

PB8

I/O FT

PB8

TIM4_CH3/TIM10_CH1/

I2C1_SCL/

LCD_SEG16

PB9

I/O FT

PB9

TIM4_CH4/

TIM11_CH1/I2C1_SDA/

LCD_COM3

PE0

I/O FT

PE0

TIM4_ETR/TIM10_CH1/

LCD_SEG36

PE1

I/O FT

PE1

TIM11_CH1/LCD_SEG37

VSS_3

S-

VSS_3

100

B8,

VDD_3

S-

VDD_3

1. I = input, O = output, S = supply.

2. Function availability depends on the chosen device.

3. Applicable to STM32L152xD-X devices only. In STM32L151xD-X devices, this pin should be connected to

VDD.

4. The PC14 and PC15 I/Os are only configured as OSC32_IN/OSC32_OUT when the LSE oscillator is ON

(by setting the LSEON bit in the RCC_CSR register). The LSE oscillator pins OSC32_IN/OSC32_OUT can

be used as general-purpose PH0/PH1 I/Os, respectively, when the LSE oscillator is off (after reset, the

LSE oscillator is off). The LSE has priority over the GPIO function. For more details, refer to Using the

OSC32_IN/OSC32_OUT pins as GPIO PC14/PC15 port pins section in the STM32L151xx, STM32L152xx

and STM32L162xx reference manual (RM0038).

5. The PH0 and PH1 I/Os are only configured as OSC_IN/OSC_OUT when the HSE oscillator is ON (by

setting the HSEON bit in the RCC_CR register). The HSE oscillator pins OSC_IN/OSC_OUT can be used

as general-purpose PH0/PH1 I/Os, respectively, when the HSE oscillator is off ( after reset, the HSE

oscillator is off). The HSE has priority over the GPIO function.

Table 7. STM32L151VD-X and STM32L152VD-X pin definitions (continued)

Pins

Pin name

Main

function(2)

(after

reset)

Pin functions

Alternate functions

Additional

functions

STM32L151VD-X Datasheet(PDF) 39 Page - STMicroelectronics

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