Microchip dsPIC33FJ128MC506A Manual

Microchip Ikke kategoriseret dsPIC33FJ128MC506A

Læs gratis den danske manual til Microchip dsPIC33FJ128MC506A (88 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 13 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 7 anmeldelser. Har du et spørgsmål om Microchip dsPIC33FJ128MC506A, eller vil du spørge andre brugere om produktet?

Download PDF
Side 1/88
© 2006-2012 Microchip Technology Inc. DS70183D-page 16-1
Analog-to-Digital
Converter (ADC)
16
Section 16. Analog-to-Digital Converter (ADC)
HIGHLIGHTS
This section of the manual contains the following major topics:
16.1 Introduction .................................................................................................................. 16-2
16.2 Control Registers ......................................................................................................... 16-6
16.3 Overview of Sample and Conversion Sequence ....................................................... 16-17
16.4 ADC Configuration..................................................................................................... 16-27
16.5 ADC Interrupt Generation .......................................................................................... 16-33
16.6 Analog Input Selection for Conversion....................................................................... 16-35
16.7 Specifying Conversion Results Buffering for Devices with DMA................................ 16-44
16.8 ADC Configuration Example ...................................................................................... 16-48
16.9 ADC Configuration for 1.1 Msps ................................................................................16-49
16.10 Sample and Conversion Sequence Examples for Devices without DMA .................. 16-51
16.11 Sample and Conversion Sequence Examples for Devices with DMA ....................... 16-63
16.12 Analog-to-Digital Sampling Requirements ................................................................. 16-73
16.13 Reading the ADC Result Buffer .................................................................................16-74
16.14 Transfer Functions ..................................................................................................... 16-76
16.15 ADC Accuracy/Error................................................................................................... 16-78
16.16 Connection Considerations........................................................................................ 16-78
16.17 Operation During Sleep and Idle Modes .................................................................... 16-79
16.18 Effects of a Reset....................................................................................................... 16-79
16.19 Special Function Registers ........................................................................................ 16-80
16.20 Design Tips ................................................................................................................ 16-81
16.21 Related Application Notes.......................................................................................... 16-82
16.22 Revision History ......................................................................................................... 16-83
dsPIC33F/PIC24H Family Reference Manual
DS70183D-page 16-2 © 2006-2012 Microchip Technology Inc.
16.1 INTRODUCTION
This document describes the features and associated operational modes of the Successive
Approximation (SAR) Analog-to-Digital Converter (ADC) available on the dsPIC33F/PIC24H
families of devices.
The ADC module can be configured by the user application to function as a 10-bit, 4-channel
ADC (for devices with 10-bit only ADC) or a 12-bit, single-channel ADC (for devices with
selectable 10-bit or 12-bit ADC).
Figure 16-1 illustrates a block diagram of the ADC module for devices with DMA. Figure 16-2
illustrates a block diagram of the ADC module for devices without DMA.
The dsPIC33F/PIC24H ADC module has the following key features:
• SAR conversion
• Up to 1.1 Msps conversion speed
• Up to 32 analog input pins
• External voltage reference input pins
• Four unipolar differential Sample and Hold (S&H) amplifiers
• Simultaneous sampling of up to four analog input pins
• Automatic Channel Scan mode
• Selectable conversion trigger source
• Up to 16-word conversion result buffer
• Selectable Buffer Fill modes (not available on all devices)
• DMA support, including Peripheral Indirect Addressing (not available on all devices)
• Operation during CPU Sleep and Idle modes
Depending on the device variant, the ADC module may have up to 32 analog input pins,
designated AN0-AN31. These analog inputs are connected by multiplexers to four S&H
amplifiers, designated CH0-CH3. The analog input multiplexers have two sets of control bits,
designated as MUXA (CHySA/CHyNA) and MUXB (CHySB/CHyNB). These control bits select a
particular analog input for conversion. The MUXA and MUXB control bits can alternatively select
the analog input for conversion. Unipolar differential conversions are possible on all channels
using certain input pins (see Figure 16-1 Figure 16-2 and ).
Channel Scan mode can be enabled for the CH0 S&H amplifier. Any subset of the analog inputs
(AN0 to AN31 based on availability) can be selected by the user application. The selected inputs
are converted in ascending order using CH0.
The ADC module supports simultaneous sampling using multiple S&H channels to sample the
inputs at the same time, and then performs the conversion for each channel sequentially. By
default, the multiple channels are sampled and converted sequentially.
For devices with DMA, the ADC module is connected to a single-word result buffer. However,
multiple conversion results can be stored in a DMA RAM buffer with no CPU overhead when
DMA is used with the ADC module. Each conversion result is converted to one of four 16-bit
output formats when it is read from the buffer.
Note: This family reference manual section is meant to serve as a complement to device
data sheets. Depending on the device variant, this manual section may not apply to
all dsPIC33F/PIC24H devices.
Please consult the note at the beginning of the “Analog-to-Digital Converter
(ADC)” chapter in the current device data sheet to check whether this document
supports the device you are using.
Device data sheets and family reference manual sections are available for
download from the Microchip Worldwide Web site at: http://www.microchip.com

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: dsPIC33FJ128MC506A

Har du brug for hjælp?

Hvis du har brug for hjælp til Microchip dsPIC33FJ128MC506A stil et spørgsmål nedenfor, og andre brugere vil svare dig


Ikke kategoriseret Microchip Manualer

Microchip

Microchip HS12-100D0/12DS2F Manual

18 Februar 2025
Microchip

Microchip HSA0-040SDA/A0SA10 Manual

18 Februar 2025
Microchip

Microchip HSA0-040SIA/A0S1F Manual

18 Februar 2025
Microchip

Microchip HT12-100S0s/12ST25 Manual

17 Februar 2025
Microchip

Microchip EMC2103-2 Manual

17 Februar 2025
Microchip

Microchip EMC1047 Manual

17 Februar 2025
Microchip

Microchip HCS201 Manual

17 Februar 2025
Microchip

Microchip LE9653 Manual

17 Februar 2025
Microchip

Microchip LAN7430 Manual

17 Februar 2025
Microchip

Microchip HCS500 Manual

17 Februar 2025

Ikke kategoriseret Manualer

Nyeste Ikke kategoriseret Manualer

XO

XO D1HPBF Manual

16 Juni 2025
Fantech

Fantech RS1 Manual

16 Juni 2025
Playtive

Playtive IAN 425414 Manual

16 Juni 2025
Playtive

Playtive IAN 321249 Manual

16 Juni 2025
Playtive

Playtive IAN 115930 Manual

16 Juni 2025
Aiphone

Aiphone GT-102HB Manual

16 Juni 2025
Playtive

Playtive HG05516 Manual

16 Juni 2025
Playtive

Playtive IAN 295154 Manual

16 Juni 2025
Playtive

Playtive IAN 324362 Manual

16 Juni 2025
Playtive

Playtive IAN 302521 Manual

16 Juni 2025