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The internal voltage reference (VREFINT) provides a stable (bandgap) voltage output for the ADC. VREFINT is internally connected to the ADC_IN17 input channel. The precise voltage of VREFINT is individually measured for each part by ST during production test and stored in the system memory area. It is accessible in read-only mode.
The STM32F103xx family devices include up to six general-purpose timers, one basic timer and an advanced control timer.
The advanced-control timer (TIM1) can be seen as a three-phase PWM multiplexed on 6 channels. It has complementary PWM outputs with programmable inserted dead times to read out flash data from locked mcu stm32f105vb. It can also be seen as a complete general-purpose timer. The 4 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.
Many features are shared with those of the standard timers which have the same architecture by cloning stm32f103rct mcu software. The advanced control timer can therefore work together with the other timers via the Timer Link feature for synchronization or event chaining.