Microchip DSPIC33FJ64GP708 Manual de Usario

Microchip No categorizado DSPIC33FJ64GP708

Lee a continuación 📖 el manual en español para Microchip DSPIC33FJ64GP708 (88 páginas) en la categoría No categorizado. Esta guía fue útil para 4 personas y fue valorada con 4.5 estrellas en promedio por 2 usuarios

Descargar PDF
Página 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
© 2006-2012 Microchip Technology Inc. DS70183D-page 16-3
Section 16. Analog-to-Digital Converter (ADC)
Analog-to-Digital
Converter (ADC)
16
For devices without DMA, the ADC module is connected to a 16-word result buffer. The ADC
result is available in four different numerical formats (see Figure 16-14).
Note 1: A ‘y’ is used with MUXA and MUXB control bits to specify the S&H channel numbers
(y = 0 or 123).
2: Depending on a particular device pinout, the ADC can have up to 32 analog input
pins, designated AN0 through AN31. In addition, there are two analog input pins for
external voltage reference connections (VREF+, VREF-). These voltage reference
inputs can be shared with other analog input pins. The actual number of analog
input pins and external voltage reference input configuration depends on the
specific device. For further details, refer to the specific device data sheet.

Especificaciones del producto

Marca: Microchip
Categoría: No categorizado
Modelo: DSPIC33FJ64GP708

¿Necesitas ayuda?

Si necesitas ayuda con Microchip DSPIC33FJ64GP708 haz una pregunta a continuación y otros usuarios te responderán


No categorizado Microchip Manuales

Microchip

Microchip dsPIC33EV256GM003 Manual de Usario

27 Octubre 2024
Microchip

Microchip SAMA5D2C-XULT Manual de Usario

27 Octubre 2024
Microchip

Microchip MCP2120 Manual de Usario

27 Octubre 2024
Microchip

Microchip AT89C51ED2 Manual de Usario

27 Octubre 2024
Microchip

Microchip PIC32MX450F256H Manual de Usario

27 Octubre 2024
Microchip

Microchip dsPIC33FJ64GP310 Manual de Usario

27 Octubre 2024
Microchip

Microchip ATSAMDA1G14B Manual de Usario

27 Octubre 2024
Microchip

Microchip ATSAMDA1E16B Manual de Usario

27 Octubre 2024
Microchip

Microchip USB3336 Manual de Usario

27 Octubre 2024
Microchip

Microchip PIC24EP64GP202 Manual de Usario

27 Octubre 2024

No categorizado Manuales

Últimos No categorizado Manuales

POLARIS

POLARIS RZR S 1000 EPS (2018) Manual de Usario

27 Octubre 2024
Workzone

Workzone 20V Li-Ion Reciprocating Saw PT160501 Manual de Usario

27 Octubre 2024
Philips

Philips 43PUL7672 Manual de Usario

27 Octubre 2024
Manhattan

Manhattan 461504 Manual de Usario

27 Octubre 2024
Sungrow

Sungrow SG125HV Manual de Usario

27 Octubre 2024
Schneider

Schneider CCT724319 Manual de Usario

27 Octubre 2024
Technoline

Technoline WS 250 Manual de Usario

27 Octubre 2024
Livarno

Livarno IAN 354423 Manual de Usario

27 Octubre 2024
Kupper

Kupper 12152 Manual de Usario

27 Octubre 2024
JennAir

JennAir CARBON24L Manual de Usario

27 Octubre 2024