PIC16LF873A-I/ML Microchip Technology, PIC16LF873A-I/ML Datasheet - Page 138
PIC16LF873A-I/ML
Manufacturer Part Number
PIC16LF873A-I/ML
Description
IC PIC MCU FLASH 4KX14 28QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF873A-I/ML
Core Processor
PIC
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PIC16LF873A-I/MLR
PIC16LF873A-I/MLR
PIC16LF873A-I/MLR
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PIC16F87XA
12.1
There are eight modes of operation for the compara-
tors. The CMCON register is used to select these
modes. Figure 12-1 shows the eight possible modes.
The TRISA register controls the data direction of the
comparator pins for each mode. If the Comparator
FIGURE 12-1:
DS39582B-page 136
Comparators Reset
CM2:CM0 = 000
Two Independent Comparators
CM2:CM0 = 010
Two Common Reference Comparators
CM2:CM0 = 100
One Independent Comparator with Output
CM2:CM0 = 001
A = Analog Input, port reads zeros always. D = Digital Input. CIS (CMCON<3>) is the Comparator Input Switch.
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
RA0/AN0
RA3/AN3
RA4/T0CKI/C1OUT
RA1/AN1
RA2/AN2
Comparator Configuration
A
A
A
A
A
A
A
A
A
A
A
D
A
A
D
D
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
COMPARATOR I/O OPERATING MODES
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
C1
C2
C1
C2
C1
C2
C1
C2
Off (Read as ‘0’)
Off (Read as ‘0’)
C1OUT
C2OUT
C1OUT
C2OUT
C1OUT
Off (Read as ‘0’)
Two Common Reference Comparators with Outputs
CM2:CM0 = 101
Two Independent Comparators with Outputs
CM2:CM0 = 011
RA4/T0CKI/C1OUT
Comparators Off (POR Default Value)
CM2:CM0 = 111
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
RA5/AN4/SS/C2OUT
Four Inputs Multiplexed to Two Comparators
CM2:CM0 = 110
RA0/AN0
RA3/AN3
RA4/T0CKI/C1OUT
RA1/AN1
RA2/AN2
RA5/AN4/SS/C2OUT
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
RA0/AN0
RA3/AN3
RA1/AN1
RA2/AN2
mode is changed, the comparator output level may not
be valid for the specified mode change delay shown in
Section 17.0 “Electrical Characteristics”.
Note:
A
A
A
D
A
A
A
A
D
D
D
D
A
A
A
A
Comparator interrupts should be disabled
during a Comparator mode change.
Otherwise, a false interrupt may occur.
V
V
V
V
V
V
V
V
V
V
V
V
CIS = 0
CIS = 1
CIS = 0
CIS = 1
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
-
+
-
+
-
+
-
+
C1
C2
2003 Microchip Technology Inc.
C1
C2
C1
C2
V
V
V
V
IN
IN
IN
IN
CV
-
+
-
+
REF
C1OUT
C2OUT
C1OUT
C2OUT
Off (Read as ‘0’)
Off (Read as ‘0’)
C1
C2
From Comparator
V
REF
Module
C1OUT
C2OUT
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