STM32F107VC datasheet(29/95 Pages) STMICROELECTRONICS

29 / 95 page

STM32F105xx, STM32F107xx

Pinouts and pin description

Doc ID 15274 Rev 4

29/95

PE0

I/O FT

PE0

TIM4_ETR

PE1

I/O FT

PE1

VSS_3

SVSS_3

100 64

VDD_3

SVDD_3

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

2. FT = 5 V tolerant. All I/Os are VDD capable.

3. Function availability depends on the chosen device.

4. If several peripherals share the same I/O pin, to avoid conflict between these alternate functions only one peripheral should

be enabled at a time through the peripheral clock enable bit (in the corresponding RCC peripheral clock enable register).

5. 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 and these IOs must not be used as a current source (e.g. to drive an LED).

6. Main function after the first backup domain power-up. Later on, it depends on the contents of the Backup registers even

after reset (because these registers are not reset by the main reset). For details on how to manage these IOs, refer to the

Battery backup domain and BKP register description sections in the STM32F10xxx reference manual, available from the

STMicroelectronics website: www.st.com.

7. This alternate function can be remapped by software to some other port pins (if available on the used package). For more

details, refer to the Alternate function I/O and debug configuration section in the STM32F10xxx reference manual,

available from the STMicroelectronics website: www.st.com.

8. For the LQFP64 package, the pins number 5 and 6 are configured as OSC_IN/OSC_OUT after reset, however the

functionality of PD0 and PD1 can be remapped by software on these pins. For the LQFP100 package, PD0 and PD1 are

available by default, so there is no need for remapping. For more details, refer to Alternate function I/O and debug

configuration section in the STM32F10xxx reference manual.

Table 5.

Pin definitions (continued)

Pins

Pin name

Main

function(3)

(after reset)

Alternate functions(4)

Default

Remap

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