Datasheet
DocID027114 Rev 2 29/88
STM32F070xB STM32F070x6 Pinouts and pin descriptions
30
50 38 - PA15 I/O FT
(4)
SPI1_NSS, USART2_RX,
USART4_RTS,
EVENTOUT
-
51 - - PC10 I/O FT
(4)
USART3_TX,
USART4_TX
-
52 - - PC11 I/O FT
(4)
USART3_RX,
USART4_RX
-
53 - - PC12 I/O FT
(4)
USART3_CK,
USART4_CK
-
54 - - PD2 I/O FT
(4)
TIM3_ETR,
USART3_RTS
-
55 39 - PB3 I/O FT SPI1_SCK, EVENTOUT -
56 40 - PB4 I/O FT
SPI1_MISO, TIM17_BKIN,
TIM3_CH1, EVENTOUT
-
57 41 - PB5 I/O FT
(4)
SPI1_MOSI, I2C1_SMBA,
TIM16_BKIN,
TIM3_CH2
WKUP6
58 42 - PB6 I/O FTf
I2C1_SCL, USART1_TX,
TIM16_CH1N
-
59 43 - PB7 I/O FTf
(4)
I2C1_SDA, USART1_RX,
USART4_CTS,
TIM17_CH1N
-
60 44 1 BOOT0 I B Boot memory selection
61 45 - PB8 I/O FTf I2C1_SCL, TIM16_CH1 -
62 46 - PB9 I/O FTf
(4)
SPI2_NSS, I2C1_SDA,
IR_OUT,
TIM17_CH1, EVENTOUT
-
63 47 - VSS S Ground
64 48 - VDD S Digital power supply
1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current
(3 mA), the use of GPIOs PC13 to PC15 in output mode is limited:
- The speed should not exceed 2 MHz with a maximum load of 30 pF.
- These GPIOs must not be used as current sources (e.g. to drive an LED).
2. After the first RTC domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the
content of the RTC registers which are not reset by the system reset. For details on how to manage these GPIOs, refer to
the RTC domain and RTC register descriptions in the reference manual.
3. Available on STM32F070x6 devices only.
4. TIM15, I2C2, WKUP4, WKUP5, WKUP6, WKUP7, SPI2, USART3 and USART4 are available on STM32F070xB devices
only.
5. On STM32F070x6 devices, pin pair PA11/12 can be remapped instead of pin pair PA9/10 using SYSCFG_CFGR1 register.
Table 11. STM32F070xB/6 pin definitions (continued)
Pin numbers
Pin name
(function after
reset)
Pin
type
I/O structure
Notes
Pin functions
LQFP64
LQFP48
TSSOP20
Alternate functions Additional functions
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