STM32F051C4 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STM32F051C4
STMicroelectronics
STM32F051C4 Datasheet PDF : 122 Pages
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Functional overview
STM32F051x4 STM32F051x6 STM32F051x8
hardware touch sensing controller and only requires few external components to operate.
For operation, one capacitive sensing GPIO in each group is connected to an external
capacitor and cannot be used as effective touch sensing channel.
The touch sensing controller is fully supported by the STMTouch touch sensing firmware
library, which is free to use and allows touch sensing functionality to be implemented reliably
in the end application.
Table 5. Capacitive sensing GPIOs available on STM32F051xx devices
Group
Capacitive sensing
signal name
Pin
name
Group
Capacitive sensing
signal name
Pin
name
TSC_G1_IO1
PA0
TSC_G4_IO1
PA9
TSC_G1_IO2
PA1
TSC_G4_IO2
PA10
1
4
TSC_G1_IO3
PA2
TSC_G4_IO3
PA11
TSC_G1_IO4
PA3
TSC_G4_IO4
PA12
TSC_G2_IO1
PA4
TSC_G5_IO1
PB3
TSC_G2_IO2
PA5
TSC_G5_IO2
PB4
2
5
TSC_G2_IO3
PA6
TSC_G5_IO3
PB6
TSC_G2_IO4
PA7
TSC_G5_IO4
PB7
TSC_G3_IO1
PC5
TSC_G6_IO1
PB11
TSC_G3_IO2
PB0
TSC_G6_IO2
PB12
3
6
TSC_G3_IO3
PB1
TSC_G6_IO3
PB13
TSC_G3_IO4
PB2
TSC_G6_IO4
PB14
Table 6. Effective number of capacitive sensing channels on STM32F051xx
Number of capacitive sensing channels
Analog I/O group
STM32F051Rx
STM32F051Cx
STM32F051Tx
STM32F051KxU STM32F051KxT
(UFQFPN32)
(LQFP32)
G1
3
3
3
3
3
G2
3
3
3
3
3
G3
3
2
2
2
1
G4
3
3
3
3
3
G5
3
3
3
3
3
G6
3
3
0
0
0
Number of capacitive
sensing channels
18
17
14
14
13
20/122
DocID022265 Rev 7
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