STM32F302CBY7TR 데이터 시트보기 (PDF) - STMicroelectronics

부품명

상세내역

제조사

STM32F302CBY7TR

ARM®-based Cortex®-M4 32b MCU+FPU, up to 256KB Flash+ 40KB SRAM, 2 ADCs, 1 DAC ch., 4 comp, 2 PGA, timers, 2.0-3.6 V

STMicroelectronics 

STM32F302xB STM32F302xC

Functional overview

3.13.3

3.13.4

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.

OPAMP reference voltage (VREFOPAMP)

Every OPAMP reference voltage can be measured using a corresponding ADC internal

channel: VREFOPAMP1 connected to ADC1 channel 15, VREFOPAMP2 connected to

ADC2 channel 17.

3.14

Digital-to-analog converter (DAC)

A single 12-bit buffered DAC channel 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 10-bit monotonic output

• Left or right data alignment in 12-bit mode

• Noise-wave generation

• Triangular-wave generation

• DMA capability

• External triggers for conversion

3.15

Operational amplifier (OPAMP)

The STM32F302xB/STM32F302xC embeds two 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:

• 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.

3.16

Fast comparators (COMP)

The STM32F302xB/STM32F302xC devices embed four 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.

DocID025186 Rev 7

21/144

53

Share Link: