STM32L100RB datasheet(35/103 Pages) STMICROELECTRONICS

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STM32L100C6 STM32L100R8/RB

Pin descriptions

PB6

I/O

PB6

I2C1_SCL/TIM4_CH1/USART1_TX

PB7

I/O

PB7

I2C1_SDA/TIM4_CH2/

USART1_RX

PVD_IN

BOOT0

PB8

I/O

PB8

TIM4_CH3/I2C1_SCL/

LCD_SEG16/TIM10_CH1

PB9

I/O

PB9

TIM4_CH4/I2C1_SDA/

LCD_COM3/TIM11_CH1

VSS_3

SVSS_3

VDD_3

SVDD_3

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

2. Function availability depends on the chosen device. For devices having reduced peripheral counts, it is always the lower

number of peripheral that is included. For example, if a device has only one SPI and two USARTs, they will be called SPI1

and USART1 & USART2, respectively. Refer to Table 1 on page 10.

3. 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

PC14/PC15 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 STM32Lxx reference manual (RM0038).

4. 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. STM32L100C6 and STM32L100R8/RB pin definitions (continued)

Pins

Pin name

Main

function(2)

(after reset)

Pin functions

Alternate functions

Additional

functions

STM32L100RB Datasheet(PDF) 35 Page - STMicroelectronics

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