STMicroelectronics STM32L151CB Manual page 42

Ultra-low-power 32-bit mcu arm-based cortex-m3, 128kb flash, 16kb sram, 4kb eeprom, lcd, usb, adc, dac
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AFIO0
AFIO1
Port name
SYSTEM
TIM2
JTCK-
PA14
-
SWCLK
TIM2_CH1
PA15
JTDI
_ETR
PB0
-
-
TIM3_CH3
PB1
-
-
TIM3_CH4
PB2
BOOT1
-
PB3
JTDO
TIM2_CH2
PB4
JTRST
-
TIM3_CH1
PB5
-
-
TIM3_CH2
PB6
-
-
TIM4_CH1
PB7
-
-
TIM4_CH2
PB8
-
-
TIM4_CH3 TIM10_CH1*
PB9
-
-
TIM4_CH4 TIM11_CH1*
PB10
-
TIM2_CH3
PB11
-
TIM2_CH4
PB12
-
-
PB13
-
-
PB14
-
-
PB15
RTC_REFIN
-
Table 9. Alternate function input/output (continued)
AFIO2
AFIO3
AFIO4
AFIO5
TIM3/4
TIM9/10/11
I2C1/2
SPI1/2
-
-
-
-
-
-
SPI1_NSS
-
-
-
-
-
-
-
-
-
-
SPI1_SCK
-
-
SPI1_MISO
I2C1_
-
SPI1_MOSI
SMBA
-
I2C1_SCL
-
I2C1_SDA
I2C1_SCL
I2C1_SDA
-
-
I2C2_SCL
-
-
I2C2_SDA
I2C2_
-
TIM10_CH1
SPI2_NSS
SMBA
-
TIM9_CH1
-
SPI2_SCK
-
TIM9_CH2
-
SPI2_MISO
-
TIM11_CH1
-
SPI2_MOSI
Digital alternate function number
AFI
AFI
AFOI6
AFIO7
O8
O9
Alternate function
USART
N/A
N/A
N/A
1/2/3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART1_
-
-
-
-
TX
USART1_
-
-
-
-
RX
-
-
-
-
-
-
-
-
-
-
USART3_
-
-
-
-
TX
USART3_
-
-
-
-
RX
USART3_
-
-
-
CK
USART3_
-
-
-
CTS
USART3_
-
-
-
RTS
-
-
-
-
AFIO
AFIO
AFIO10
AFIO11
AFIO14
12
13
USB
LCD
N/A
N/A
RI
-
-
-
-
TIMx_IC3 EVENTOUT
-
SEG17
-
-
TIMx_IC4 EVENTOUT
-
[SEG5]
-
-
-
-
[SEG6]
-
-
-
-
-
-
-
-
-
[SEG7]
-
-
-
-
[SEG8]
-
-
-
-
[SEG9]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SEG16
-
-
-
-
[COM3]
-
-
-
-
SEG10
-
-
-
-
SEG11
-
-
-
-
SEG12
-
-
-
-
SEG13
-
-
-
-
SEG14
-
-
-
-
SEG15
-
-
-
AFIO15
SYSTEM
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT
EVENTOUT

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