Datasheet

Functional overview STM32F20xxx
30/178 DocID15818 Rev 11
3.20 Timers and watchdogs
The STM32F20x devices include two advanced-control timers, eight general-purpose
timers, two basic timers and two watchdog timers.
All timer counters can be frozen in debug mode.
Table 5 compares the features of the advanced-control, general-purpose and basic timers.
3.20.1 Advanced-control timers (TIM1, TIM8)
The advanced-control timers (TIM1, TIM8) can be seen as three-phase PWM generators
multiplexed on 6 channels. They have complementary PWM outputs with programmable
inserted dead times. They can also be considered as complete general-purpose timers.
Their 4 independent channels can be used for:
• Input capture
• Output compare
• PWM generation (edge- or center-aligned modes)
• One-pulse mode output
Table 5. Timer feature comparison
Timer type Timer
Counter
resolution
Counter
type
Prescaler
factor
DMA
request
generation
Capture/
compare
channels
Complementary
output
Max
interface
clock
Max
timer
clock
Advanced-
control
TIM1,
TIM8
16-bit
Up,
Down,
Up/down
Any integer
between 1
and 65536
Yes 4 Yes 60 MHz
120
MHz
General
purpose
TIM2,
TIM5
32-bit
Up,
Down,
Up/down
Any integer
between 1
and 65536
Yes 4 No 30 MHz
60
MHz
TIM3,
TIM4
16-bit
Up,
Down,
Up/down
Any integer
between 1
and 65536
Yes 4 No 30 MHz
60
MHz
Basic
TIM6,
TIM7
16-bit Up
Any integer
between 1
and 65536
Yes 0 No 30 MHz
60
MHz
General
purpose
TIM9 16-bit Up
Any integer
between 1
and 65536
No 2 No 60 MHz
120
MHz
TIM10,
TIM11
16-bit Up
Any integer
between 1
and 65536
No 1 No 60 MHz
120
MHz
TIM12 16-bit Up
Any integer
between 1
and 65536
No 2 No 30 MHz
60
MHz
TIM13,
TIM14
16-bit Up
Any integer
between 1
and 65536
No 1 No 30 MHz
60
MHz