PIC16LF1824T39A_12 Datasheet, PDF (137/418 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with XLP Technology

PIC16LF1824T39A
16.0 ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
The Analog-to-Digital Converter (ADC) allows
conversion of an analog input signal to a 10-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 10-bit binary result via successive
approximation and stores the conversion result into the
ADC result registers (ADRESH:ADRESL register pair).
Figure 16-1 shows the block diagram of the ADC.
The ADC voltage reference is software selectable to be
either internally generated or externally supplied.
FIGURE 16-1:
ADC BLOCK DIAGRAM
The ADC can generate an interrupt upon completion of
a conversion. This interrupt can be used to wake-up the
device from Sleep.
VREF-
ADNREF = 1
ADNREF = 0
VDD ^VSS
ADPREF = 00
ADPREF = 11
VREF+ ADPREF = 10
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Temp Indicator
DAC_output
FVR Buffer1
00000
00001
00010
00011
00100
00101
00110
00111
11101
11110
11111
GO/DONE
ref+ ref-
ADC
ADON⁽¹⁾
VSS
10
ADFM
0 = Left Justify
1 = Right Justify
16
ADRESH ADRESL
CHS<4:0>
Note 1: When ADON = 0, all multiplexer inputs are disconnected.
 2012 Microchip Technology Inc.
Preliminary
DS41657A-page 137