Datasheet
DocID025936 Rev 8 31/143
STM32L052x6 STM32L052x8 Functional overview
36
3.17 Timers and watchdogs
The ultra-low-power STM32L052x6/8 devices include three general-purpose timers, one
low- power timer (LPTIM), one basic timer, two watchdog timers and the SysTick timer.
Table 10 compares the features of the general-purpose and basic timers.
Table 9. Capacitive sensing GPIOs available on STM32L052x6/8 devices
Group
Capacitive sensing
signal name
Pin
name
Group
Capacitive sensing
signal name
Pin
name
1
TSC_G1_IO1 PA0
5
TSC_G5_IO1 PB3
TSC_G1_IO2 PA1 TSC_G5_IO2 PB4
TSC_G1_IO3 PA2 TSC_G5_IO3 PB6
TSC_G1_IO4 PA3 TSC_G5_IO4 PB7
2
TSC_G2_IO1 PA4
(1)
1. This GPIO offers a reduced touch sensing sensitivity. It is thus recommended to use it as sampling
capacitor I/O.
6
TSC_G6_IO1 PB11
TSC_G2_IO2 PA5 TSC_G6_IO2 PB12
TSC_G2_IO3 PA6 TSC_G6_IO3 PB13
TSC_G2_IO4 PA7 TSC_G6_IO4 PB14
3
TSC_G3_IO1 PC5
7
TSC_G7_IO1 PC0
TSC_G3_IO2 PB0 TSC_G7_IO2 PC1
TSC_G3_IO3 PB1 TSC_G7_IO3 PC2
TSC_G3_IO4 PB2 TSC_G7_IO4 PC3
4
TSC_G4_IO1 PA9
8
TSC_G8_IO1 PC6
TSC_G4_IO2 PA10 TSC_G8_IO2 PC7
TSC_G4_IO3 PA11 TSC_G8_IO3 PC8
TSC_G4_IO4 PA12 TSC_G8_IO4 PC9
Table 10. Timer feature comparison
Timer
Counter
resolution
Counter type Prescaler factor
DMA
request
generation
Capture/compare
channels
Complementary
outputs
TIM2 16-bit
Up, down,
up/down
Any integer between
1 and 65536
Yes 4 No
TIM21,
TIM22
16-bit
Up, down,
up/down
Any integer between
1 and 65536
No 2 No
TIM6 16-bit Up
Any integer between
1 and 65536
Yes 0 No
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