PIC16LF1508 Datasheet, PDF (135/384 Pages) Microchip Technology – 20-Pin Flash, 8-Bit Microcontrollers with nanoWatt XLP Technology

PIC16(L)F1508/9
15.0 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 15-1 shows the block diagram of the ADC.
The ADC voltage reference is software selectable to be
either internally generated or externally supplied.
FIGURE 15-1:
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.
VDD
ADPREF = 00
VREF+ ADPREF = 10
AN0
VREF+/AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
Reserved
Reserved
Temp Indicator
DAC
FVR Buffer1
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
11100
11101
11110
11111
CHS<4:0>
VREF+ VREF- = VSS
GO/DONE
ADC
ADON
VSS
10
ADFM
0 = Left Justify
1 = Right Justify
16
ADRESH ADRESL
Note 1: When ADON = 0, all multiplexer inputs are disconnected.
 2011 Microchip Technology Inc.
Preliminary
DS41609A-page 135