Vbat; Timers And Watchdogs; Advanced-Control Timer (Tim1); Table 5. Timer Feature Comparison - STMicroelectronics STM32F031F4 Manual

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Functional overview
3.10.3 V battery voltage monitoring
BAT
This embedded hardware feature allows the application to measure the V
using the internal ADC channel ADC_IN18. As the V
and thus outside the ADC input range, the V
divider by 2. As a consequence, the converted digital value is half the V
3.11

Timers and watchdogs

The STM32F031x4/x6 devices include up to five general-purpose timers and an advanced
control timer.
Table 5 compares the features of the different timers.
Timer Counter
Timer
type resolution
Advanced
TIM1
control
TIM2
TIM3
General
purpose
TIM14
TIM16,
TIM17
3.11.1

Advanced-control timer (TIM1)

The advanced-control timer (TIM1) can be seen as a three-phase PWM multiplexed on six
channels. It has complementary PWM outputs with programmable inserted dead times. It
can also be seen as a complete general-purpose timer. The four independent channels can
be used for:

Input capture

Output compare

PWM generation (edge or center-aligned modes)

One-pulse mode output
If configured as a standard 16-bit timer, it has the same features as the TIMx timer. If
configured as the 16-bit PWM generator, it has full modulation capability (0-100%).
The counter can be frozen in debug mode.
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Table 5. Timer feature comparison

Counter Prescaler
type
Up, Any integer
16-bit down, between 1
up/down and 65536
Up, Any integer
32-bit down, between 1
up/down and 65536
Up, Any integer
16-bit down, between 1
up/down and 65536
Any integer
16-bit Up between 1
and 65536
Any integer
16-bit Up between 1
and 65536
DocID025743 Rev 3
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BAT
pin is internally connected to a bridge
BAT
DMA request
factor generation
Yes
Yes
Yes
No
Yes
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STM32F031x4 STM32F031x6
battery voltage
BAT
voltage may be higher than V
voltage.
BAT
Capture/compare Complementary
channels
4
4
4
1
1
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,
DDA
outputs
3
No
No
No
1