PIC16F1503T-I View Datasheet(PDF) - Microchip Technology
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PIC16F1503T-I Datasheet PDF : 352 Pages
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PIC16(L)F1503
17.0 COMPARATOR MODULE
Comparators are used to interface analog circuits to a
digital circuit by comparing two analog voltages and
providing a digital indication of their relative magnitudes.
Comparators are very useful mixed signal building
blocks because they provide analog functionality
independent of program execution. The analog
comparator module includes the following features:
• Independent comparator control
• Programmable input selection
• Comparator output is available internally/externally
• Programmable output polarity
• Interrupt-on-change
• Wake-up from Sleep
• Programmable Speed/Power optimization
• PWM shutdown
• Programmable and fixed voltage reference
17.1 Comparator Overview
A single comparator is shown in Figure 17-2 along with
the relationship between the analog input levels and
the digital output. When the analog voltage at VIN+ is
less than the analog voltage at VIN-, the output of the
comparator is a digital low level. When the analog
voltage at VIN+ is greater than the analog voltage at
VIN-, the output of the comparator is a digital high level.
The comparators available for this device are listed in
Table 17-1.
TABLE 17-1: AVAILABLE COMPARATORS
Device
C1
C2
PIC16(L)F1503
●
●
FIGURE 17-1:
COMPARATOR MODULE SIMPLIFIED BLOCK DIAGRAM
CxNCH<2:0> 3
CxON(1)
CxIN0-
000
CxIN1-
001
CxIN2-
010
CxIN3-
011
FVR_buffer2 100
CxIN+
00
DAC_out 01
FVR_buffer2 10
CxON(1)
CxVN -
Cx
CxVP +
CxSP CxHYS CxPOL
11
CxPCH<1:0> 2
CxON(1)
Interrupt
Rising
Edge
CxINTP
Interrupt
Falling
Edge
CxINTN
DQ
Rev. 10-000027A
8/5/2013
set bit
CxIF
CxOUT
MCxOUT
Q1
CxSYNC
0
DQ
1
CxOUT_async
to
peripherals
CxOUT_sync
to
peripherals
CxOE
TRIS bit
CxOUT
(From Timer1 Module) T1CLK
DS40001607D-page 130
2011-2015 Microchip Technology Inc.
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