Datasheet

STM32F313xx Functional overview
Doc ID 023636 Rev 1 17/58
This digital interface supports the following features:
● Up to two DAC output channels on STM32F313xx devices
● 8-bit or 12-bit monotonic output
● Left or right data alignment in 12-bit mode
● Synchronized update capability on STM32F313xx devices
● Noise-wave generation
● Triangular-wave generation
● Dual DAC channel independent or simultaneous conversions on STM32F313xx
devices
● DMA capability (for each channel on STM32F313xx devices)
● External triggers for conversion
3.14 Operational amplifier
The STM32F313xx embeds up to four operational amplifiers with external or internal
follower routing and PGA capability (or even amplifier and filter capability with external
components). When an operational amplifier is selected, an external ADC channel is used
to enable output measurement.
The operational amplifier features:
● 8MHz GBP
● 0.5 mA output capability
● Rail-to-rail input/output
● In PGA mode, the gain can be programmed to be 2, 4, 8 or 16.
3.15 Fast comparators
The STM32F313xx devices embed seven fast rail-to-rail comparators with programmable
reference voltage (internal or external), hysteresis and speed (low speed for low power) and
with selectable output polarity.
The reference voltage can be one of the following:
● External I/O
● DAC output pin
● Internal reference voltage or submultiple (1/4, 1/2, 3/4). Refer to Table 27: Embedded
internal reference voltage on page 58 for the value and precision of the internal
reference voltage.
All comparators can wake up from STOP mode, generate interrupts and breaks for the
timers and can be also combined per pair into a window comparator
3.16 Timers and watchdogs
The STM32F313xx includes up to two advanced control timers, up to 6 general-purpose
timers, two basic timers, two watchdog timers and a SysTick timer. The table below
compares the features of the advanced control, general purpose and basic timers.