Datasheet
Pinouts and pin descriptions STM32F091xB STM32F091xC
36/128 DocID026284 Rev 4
L4 31 G4 22 G5 16 PA6 I/O TTa
SPI1_MISO, I2S1_MCK,
TIM3_CH1, TIM1_BKIN,
TIM16_CH1,
COMP1_OUT,
TSC_G2_IO3,
EVENTOUT,
USART3_CTS
ADC_IN6
M4 32 H4 23 E4 17 PA7 I/O TTa
SPI1_MOSI, I2S1_SD,
TIM3_CH2, TIM14_CH1,
TIM1_CH1N, TIM17_CH1,
COMP2_OUT,
TSC_G2_IO4,
EVENTOUT
ADC_IN7
K5 33 H5 24 H5 - PC4 I/O TTa EVENTOUT, USART3_TX ADC_IN14
L5 34 H6 25 F4 - PC5 I/O TTa
TSC_G3_IO1,
USART3_RX
ADC_IN15,
WKUP5
M5 35 F5 26 G4 18 PB0 I/O TTa
TIM3_CH3, TIM1_CH2N,
TSC_G3_IO2,
EVENTOUT,
USART3_CK
ADC_IN8
M6 36 G5 27 F3 19 PB1 I/O TTa
TIM3_CH4,
USART3_RTS,
TIM14_CH1, TIM1_CH3N,
TSC_G3_IO3
ADC_IN9
L6 37 G6 28 H4 20 PB2 I/O FT TSC_G3_IO4 -
M738---- PE7 I/OFT
TIM1_ETR,
USART5_CK_RTS
-
L7 39 - - - - PE8 I/O FT
TIM1_CH1N,
USART4_TX
-
M8 40 - - - - PE9 I/O FT TIM1_CH1, USART4_RX -
L8 41 - - - - PE10 I/O FT
TIM1_CH2N,
USART5_TX
-
M9 42 - - - - PE11 I/O FT TIM1_CH2, USART5_RX -
L9 43 - - - - PE12 I/O FT
SPI1_NSS, I2S1_WS,
TIM1_CH3N
-
M10 44 - - - - PE13 I/O FT
SPI1_SCK, I2S1_CK,
TIM1_CH3
-
Table 13. STM32F091xB/xC pin definitions (continued)
Pin numbers
Pin name
(function upon
reset)
Pin type
I/O structure
Notes
Pin functions
UFBGA100
LQFP100
UFBGA64
LQFP64
WLCSP64
LQFP48/UFQFPN48
Alternate functions
Additional
functions
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