STMicroelectronics STM32F050G6 Manual page 29

STM32F050xx
Table 8. Pin definitions (continued)
Pin number
46 - -
47 32 0
48 1 1
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 GPIO 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 a current sources (e.g. to drive an LED).
2. After the first backup domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the
content of the Backup registers which is not reset by the main reset. For details on how to manage these GPIOs, refer to
the Battery backup domain and BKP register description sections in the STM32F05xx reference manual.
3. PB2 and PB8 should be treated as unconnected pins on the LQFP32 package (even when they are not available on the
package, they are not forced to a defined level by hardware).
4. After reset, these pins are configured as SWDAT and SWCLK alternate functions, and the internal pull-up on SWDAT pin
and internal pull-down on SWCLK pin are activated.
Pin name
(function after
reset)
- - PB9
28 - VSS
1 - VDD
Doc ID 023079 Rev 3
Notes
I/O FTf
TIM17_CH1,
S
S
Pinouts and pin description
Pin functions
Alternate Additional
functions functions
I2C1_SDA,
IR_OUT,
EVENTOUT
Ground
Digital power supply
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