STM32MP151AAB3 datasheet(40/253 Pages) STMICROELECTRONICS

40 / 253 page

Functional overview

STM32MP151A/D

40/253

DS12500 Rev 3

The DFSDM peripheral supports:

•

8 multiplexed input digital serial channels:

–

configurable SPI interface to connect various SD modulator(s)

–

configurable Manchester coded 1-wire interface support

–

PDM (pulse density modulation) microphone input support

–

maximum input clock frequency up to 20 MHz (10 MHz for Manchester coding)

–

clock output for SD modulator(s): 0…20 MHz

•

Alternative inputs from 8 internal digital parallel channels (up to 16-bit input resolution):

–

internal sources: ADC data or memory data streams (DMA)

•

6 digital filter modules with adjustable digital signal processing:

–Sincx filter: filter order/type (1…5), oversampling ratio (1…1024)

–

integrator: oversampling ratio (1…256)

•

Up to 24-bit output data resolution, signed output data format

•

Automatic data offset correction (offset stored in register by user)

•

Continuous or single conversion

•

Start-of-conversion triggered by:

–

software trigger

–

internal timers

–

external events

–

start-of-conversion synchronously with first digital filter module (DFSDM0)

•

Analog watchdog feature:

–

low value and high value data threshold registers

–

dedicated configurable Sincx digital filter (order = 1…3, oversampling ratio =

1…32)

–

input from final output data or from selected input digital serial channels

–

continuous monitoring independently from standard conversion

•

Short circuit detector to detect saturated analog input values (bottom and top range):

–

up to 8-bit counter to detect 1…256 consecutive 0’s or 1’s on serial data stream

–

monitoring continuously each input serial channel

•

Break signal generation on analog watchdog event or on short circuit detector event

•

Extremes detector:

–

storage of minimum and maximum values of final conversion data

–

refreshed by software

•

DMA capability to read the final conversion data

•

Interrupts: end of conversion, overrun, analog watchdog, short circuit, input serial

channel clock absence

•

“Regular” or “injected” conversions:

–

“regular” conversions can be requested at any time or even in continuous mode

without having any impact on the timing of “injected” conversions

–

“injected” conversions for precise timing and with high conversion priority

STM32MP151AAB3 Fiches technique(PDF) 40 Page - STMicroelectronics

STM32MP151AAB3 Fiches technique(HTML) 40 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

Fiches technique Télécharger

Lien URL