STM32F732ICK6 datasheet(43/122 Pages) STMICROELECTRONICS

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STM32F732xx STM32F733xx

Functional overview

To synchronize A/D conversion and timers, the ADCs could be triggered by any of TIM1,

TIM2, TIM3, TIM4, TIM5, or TIM8 timer.

2.35

Temperature sensor

The temperature sensor has to generate a voltage that varies linearly with the temperature.

The conversion range is between 1.7 V and 3.6 V. The temperature sensor is internally

connected to the same input channel as VBAT, ADC1_IN18, which is used to convert the

sensor output voltage into a digital value. When the temperature sensor and VBAT

conversion are enabled at the same time, only VBAT conversion is performed.

As the offset of the temperature sensor varies from chip to chip due to process variation, the

internal temperature sensor is mainly suitable for applications that detect temperature

changes instead of absolute temperatures. If an accurate temperature reading is needed,

then an external temperature sensor part should be used.

2.36

Digital-to-analog converter (DAC)

The two 12-bit buffered DAC channels can be used to convert two digital signals into two

analog voltage signal outputs.

This dual digital Interface supports the following features:

•

Two DAC converters: one for each 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

•

Dual DAC channel independent or simultaneous conversions

•

DMA capability for each channel

•

External triggers for conversion

•

Input voltage reference VREF+

Eight DAC trigger inputs are used in the device. The DAC channels are triggered through

the timer update outputs that are also connected to different DMA streams.

2.37

Serial wire JTAG debug port (SWJ-DP)

The ARM SWJ-DP interface is embedded, and is a combined JTAG and serial wire debug

port that enables either a serial wire debug or a JTAG probe to be connected to the target.

The debug is performed using 2 pins only instead of 5 required by the JTAG (JTAG pins

could be re-use as GPIO with alternate function): the JTAG TMS and TCK pins are shared

with SWDIO and SWCLK, respectively, and a specific sequence on the TMS pin is used to

switch between JTAG-DP and SW-DP.

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