Datasheet

 2011 Microchip Technology Inc. Preliminary DS41585A-page 91
PIC10(L)F320/322
15.0 ANALOG-TO-DIGITAL
CONVERTER (ADC) MODULE
The Analog-to-Digital Converter (ADC) converts an
analog input signal to an 8-bit binary representation of
that signal. This device uses three analog input
channels, 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 an 8-bit binary result via successive
approximation and stores the conversion result into the
ADC result register (ADRES). 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.
The ADC can generate an interrupt upon completion of
a conversion. This interrupt can be used to wake-up the
device from Sleep.
FIGURE 15-1: ADC SIMPLIFIED BLOCK DIAGRAM
FVR
V
REF- = Vss
Note 1: When ADON = 0, all multiplexer inputs are disconnected.
2: See ADCON register (Register 15-1) for detailed analog channel selection per device.
ADON
(1)
GO/DONE
VSS
ADC
000
001
010
111
CHS<2:0>
(2)
AN0
AN1
AN2
ADRES
8
Temp Indicator
110
VREF+ = VDD
011
100
101
Reserved
Reserved
Reserved