PIC16LC642-04/SO Microchip Technology, PIC16LC642-04/SO Datasheet - Page 48

• Manufacturer Part Number: PIC16LC642-04/SO
• Description: IC MCU OTP 4KX14 COMP 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16LC642-04/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, WDT
• Number Of I /o: 22
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: PIC16LC
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 176 B
• Interface Type: RS- 232
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 8
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit
• Data Rom Size: 176 B
• Height: 2.31 mm
• Length: 17.87 mm
• Supply Voltage (max): 6 V
• Supply Voltage (min): 3 V
• Width: 7.49 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PIC16C64X & PIC16C66X
7.1
There are eight modes of operation for the
comparators. The CMCON register is used to select
the mode. Figure 7-2 shows the eight possible modes.
The TRISA register controls the data direction of the
comparator pins for each mode. If the comparator
FIGURE 7-2:
DS30559A-page 48
Comparators Reset (POR Default Value)
CM2:CM0 = 000
Two Independent Comparators
CM2:CM0 = 100
Two Common Reference Comparators
CM2:CM0 = 011
One Independent Comparator
CM2:CM0 = 101
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
RA1/AN1
RA2/AN2
Comparator Configuration
A
A
A
A
A
A
A
A
A
D
A
A
D
D
A
A
COMPARATOR I/O OPERATING MODES
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
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
C1
C2
C1
C2
C1
C2
C1
C2
Off
Off
C1OUT
C2OUT
C1OUT
C2OUT
Off
C2OUT
(Read as '0')
(Read as '0')
(Read as '0')
Preliminary
Two Common Reference Comparators with Outputs
CM2:CM0 = 110
Comparators Off
CM2:CM0 = 111
Four Inputs Multiplexed to Two Comparators
CM2:CM0 = 010
Three Inputs Multiplexed to Two Comparators
CM2:CM0 = 001
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
RA1/AN1
RA2/AN2
mode is changed, the comparator output level may not
be valid for the specified mode change delay shown
in Table 12-2.
Note:
RA4
A
D
A
A
D
D
D
D
A
A
A
A
A
A
A
A
Comparator interrupts should be disabled
during a comparator mode change other-
wise a false interrupt may occur.
Open Drain
V
V
V
V
V
V
V
V
CIS = 0
CIS = 1
CIS = 0
CIS = 1
CIS = 0
CIS = 1
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
-
+
-
+
C1
C2
C1
C2
1996 Microchip Technology Inc.
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
-
+
-
+
C1OUT
C2OUT
Off
Off
C1
C2
C1
C2
From V
(Read as '0')
(Read as '0')
REF
C1OUT
C2OUT
C1OUT
C2OUT
Module