Техническая Спецификация для Microchip Technology MA330026

 2011-2014 Microchip Technology Inc.

DS70000652F-page 217

The dsPIC33FJ16(GP/MC)101/102 and
dsPIC33FJ32(GP/MC)101/102/104 devices have up to
14 ADC module input channels. 

The 10-bit ADC configuration has the following key
features:

• Successive Approximation (SAR) conversion

• Conversion speeds of up to 1.1 Msps

• Up to 14 analog input pins

• Four Sample-and-Hold (S&H) circuits for 

simultaneous sampling of up to four analog input 
pins

• Automatic Channel Scan mode

• Selectable conversion trigger source

• Selectable Buffer Fill modes

• Four result alignment options (signed/unsigned, 

fractional/integer)

• Operation during CPU Sleep and Idle modes

• 16-word conversion result buffer

Depending on the particular device pinout, the ADC
can have up to 14 analog input pins. 

Block diagrams of the ADC module are shown in

 through 

.

To configure the ADC module:

1.

Select port pins as analog inputs
(AD1PCFGL<15:0>).

2.

Select the analog conversion clock to match the
desired data rate with the processor clock
(ADxCON3<7:0>).

3.

Determine how many Sample-and-Hold
channels will be used (ADxCON2<9:8>).

4.

Select the appropriate sample and conver-
sion sequence (ADxCON1<7:5> and
ADxCON3<12:8>).

5.

Select the way conversion results are presented
in the buffer (ADxCON1<9:8>).

6.

Turn on the ADC module (ADxCON1<15>).

7.

Configure the ADC interrupt (if required):

a)

Clear the ADxIF bit.

b)

Select the ADC interrupt priority.

Note 1: This data sheet summarizes the features

of the dsPIC33FJ16(GP/MC)101/102 and
dsPIC33FJ32(GP/MC)101/102/104 family
devices. It is not intended to be a compre-
hensive reference source. To complement
the information in this data sheet, refer
to 

(ADC)” (DS70183) in the “dsPIC33/
PIC24 Family Reference Manual”, which
is available from the Microchip web site
(

www.microchip.com

).

2: Some registers and associated bits

described in this section may not be
available on all devices. Refer to

 in

this data sheet for device-specific register
and bit information.