STM32L151VD datasheet(48/154 Pages) STMICROELECTRONICS

48 / 154 page

Pin descriptions

STM32L151xD STM32L152xD

48/154

DocID022027 Rev 11

135 C5

91 57 A5

PB5

I/O

PB5

TIM3_CH2/I2C1_SMBA/

SPI1_MOSI/

SPI3_MOSI/

I2S3_SD/LCD_SEG9

COMP2_INP

136

92 58 B5

PB6

I/O

PB6

TIM4_CH1/I2C1_SCL/

USART1_TX/

COMP2_INP

137

93 59 C5

PB7

I/O

PB7

TIM4_CH2/I2C1_SDA/

USART1_RX/FSMC_NADV

COMP2_INP/

PVD_IN

138

94 60 A6

BOOT0

139

95 61 D5

PB8

I/O

PB8

TIM4_CH3/TIM10_CH1/

I2C1_SCL/

LCD_SEG16/SDIO_D4

140

96 62 B6

PB9

I/O

PB9

TIM4_CH4/

TIM11_CH1/I2C1_SDA/

LCD_COM3/ SDIO_D5

141 C3

PE0

I/O

PE0

TIM4_ETR/TIM10_CH1/

LCD_SEG36/FSMC_NBL0

142

PE1

I/O

PE1

TIM11_CH1/LCD_SEG37

/FSMC_NBL1

143 D3

99 63 A7

VSS_3

S-

VSS_3

144 C4 100 64 A8

VDD_3

S-

VDD_3

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

2. Function availability depends on the chosen device.

3. Applicable to STM32L152xD devices only. In STM32L151xD 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 8. STM32L151xD and STM32L152xD pin definitions (continued)

Pins

Pin name

Main

function(2)

(after reset)

Pin functions

Alternate functions

Additional

functions

STM32L151VD Datasheet(PDF) 48 Page - STMicroelectronics

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