STM32U545NET6QTR datasheet(58/283 Pages) STMICROELECTRONICS

58 / 283 page

Functional overview

STM32U545xx

58/283

DS14216 Rev 1

•

ADC features an external analog input channel:

–

Up to 17 channels from dedicated GPIO pads

•

Three additional internal dedicated channels:

–

One channel for internal reference voltage (VREFINT)

–

One channel for internal temperature sensor (VSENSE)

–

One channel for VBAT monitoring channel (VBAT/4)

•

Start-of-conversion can be initiated:

–

by software for both regular and injected conversions

–

by hardware triggers with configurable polarity (internal timers events or GPIO

input events) for both regular and injected conversions

•

Conversion modes

–

Single mode: the ADC converts a single channel. The conversion is triggered by

a special event.

–

Scan mode: the ADC scans and converts a sequence of channels.

–

Continuous mode: the ADC converts continuously selected inputs.

–

Discontinuous mode: the ADC converts a subset of the conversion sequence.

•

Interrupt generation when the ADC is ready, at end of sampling, end of conversion

(regular or injected), end of sequence conversion (regular or injected), analog

watchdog 1, 2 or 3 or when an overrun event occurs

•

Three analog watchdogs

–

Filtering to ignore out-of-range data

•

ADC input range: VSSA < VIN < VREF+

Note:

The ADC1 analog block clock frequency must be between 5 MHz and 55 MHz.

3.25.2

Analog-to-digital converter 4 (ADC4)

The 12-bit ADC4 is a successive approximation analog-to-digital converter. It has up to

21 multiplexed channels allowing it to measure signals from 15 external and six internal

sources. A/D conversion of the various channels can be performed in Single, Continuous,

Scan or Discontinuous mode. The result of the ADC is stored in a left-aligned or

right-aligned 16-bit data register.

The analog watchdog feature allows the application to detect if the input voltage goes

outside the user-defined higher or lower thresholds.

An efficient low-power mode is implemented to allow very low consumption at low

frequency. The ADC4 is autonomous in low-power modes down to Stop 2 mode.

A built-in hardware oversampler allows analog performances to be improved while

off-loading the related computational burden from the CPU.

The ADC4 main features are:

•

High performance

–

12-, 10-, 8- or 6-bit configurable resolution

–

A/D conversion time: 0.4 µs for 12-bit resolution (2.5 MHz), faster conversion

times obtained by lowering resolution

–

Self-calibration

–

Programmable sampling time

STM32U545NET6QTR 数据表(PDF) 58 Page - STMicroelectronics

STM32U545NET6QTR 数据表(HTML) 58 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载