PIC16F716-I-P Datasheet, PDF (39/136 Pages) Microchip Technology – 8-bit Flash-based Microcontroller with A/D Converter and Enhanced Capture/Compare/PWM

PIC16F716
7.0 ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
The Analog-to-Digital Converter (ADC) allows
conversion of an analog input signal to a 8-bit binary
representation of that signal. This device uses analog
inputs, which are multiplexed into a single sample and
hold circuit. The output of the sample and hold is
connected to the input of the converter. The converter
generates a 8-bit binary result via successive
approximation and stores the conversion result into the
ADC result register (ADRES).
FIGURE 7-1:
ADC BLOCK DIAGRAM
VDD
VREF
The ADC voltage reference is software selectable to
either VDD or a voltage applied to the external reference
pins.
The ADC can generate an interrupt upon completion of
a conversion. This interrupt can be used to wake-up the
device from Sleep.
Figure 7-1 shows the block diagram of the ADC.
PFCG<2:0>
(ADCON1 register)
RA0/AN0
RA1/AN1
RA2/AN2
RA3/VREF/AN3
000
001
010
011 GO/DONE
ADC
CHS
ADON
VSS
8
ADRES
© 2007 Microchip Technology Inc.
DS41206B-page 37