PIC16F883 Microchip Technology Inc., PIC16F883 Datasheet - Page 101

• Manufacturer Part Number: PIC16F883
• Description: 28/40/44-pin Flash-based, 8-bit Cmos Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

9.0
The
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 (ADRESL and ADRESH).
The ADC voltage reference is software selectable to
either V
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 9-1 shows the block diagram of the ADC.
FIGURE 9-1:
© 2007 Microchip Technology Inc.
Analog-to-Digital
DD
ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
or a voltage applied to the external reference
Fixed Ref
CV
AN10
AN12
AN13
AN11
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
REF
ADC BLOCK DIAGRAM
Converter
CHS<3:0>
V
REF
V
REF
-
+
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
(ADC)
AV
SS
AV
GO/DONE
DD
PIC16F882/883/884/886/887
VCFG0 = 0
VCFG0 = 1
VCFG1 = 0
VCFG1 = 1
allows
ADON
Preliminary
V
SS
ADC
ADFM
ADRESH ADRESL
0 = Left Justify
1 = Right Justify
10
10
DS41291D-page 99