STM32F301C6T6 查看數據表（PDF） - STMicroelectronics

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STM32F301C6T6

ARM® Cortex®-M4 32-bit MCU+FPU, up to 64 KB Flash, 16 KB SRAM, ADC, DAC, COMP, Op-Amp, 2.0 – 3.6 V

STMicroelectronics 

STM32F301x6 STM32F301x8

Functional overview

3.11.3

VBAT battery voltage monitoring

This embedded hardware feature allows the application to measure the VBAT battery voltage

using the internal ADC channel ADC1_IN17. As the VBAT voltage may be higher than VDDA,

and thus outside the ADC input range, the VBAT pin is internally connected to a bridge

divider by 2. As a consequence, the converted digital value is half the VBAT voltage.

3.12

Digital-to-analog converter (DAC)

One 12-bit buffered DAC channel (DAC1_OUT1) can be used to convert digital signals into

analog voltage signal outputs. The chosen design structure is composed of integrated

resistor strings and an amplifier in inverting configuration.

This digital interface supports the following features:

• One DAC output channel

• 8-bit or 12-bit monotonic output

• Left or right data alignment in 12-bit mode

• Synchronized update capability

• Noise-wave generation

• Triangular-wave generation

• DMA capability

• External triggers for conversion

3.13

Operational amplifier (OPAMP)

The STM32F301x6/8 devices embed one operational amplifier with external or internal

follower routing and PGA capability (or even amplifier and filter capability with external

components). When the operational amplifier is selected, an external ADC channel is used

to enable output measurement.

The operational amplifier features:

• 8.2 MHz bandwidth

• 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.

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