PIC18LF8490-I/PT Microchip Technology, PIC18LF8490-I/PT Datasheet - Page 244

• Manufacturer Part Number: PIC18LF8490-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,80PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18LF8490-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, LCD, POR, PWM, WDT
• Number Of I /o: 66
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Processor Series: PIC18LF
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SPI, I2C, EUSART, AUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 66
• Number Of Timers: 1 x 8
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM163028
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC18F6390/6490/8390/8490
19.1
There are eight modes of operation for the compara-
tors, shown in Figure 19-1. Bits, CM2:CM0 of the
CMCON register, are used to select these modes. The
TRISF register controls the data direction of the
comparator pins for each mode. If the Comparator
FIGURE 19-1:
DS39629C-page 242
Comparators Reset (POR Default Value)
CM2:CM0 = 000
Two Independent Comparators
CM2:CM0 = 010
Two Common Reference Comparators
CM2:CM0 = 100
One Independent Comparator with Output
CM2:CM0 = 001
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
A = Analog Input, port reads zeros always
* Setting the TRISF<2:1> bits will disable the comparator outputs by configuring the pins as inputs.
RF2/AN7/C1OUT*/SEG20
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
REF
REF
REF
REF
/SEG23
/SEG23
Comparator Configuration
/SEG23
/SEG23
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’)
D = Digital Input
Two Common Reference Comparators with Outputs
CM2:CM0 = 101
Two Independent Comparators with Outputs
CM2:CM0 = 011
Comparators Off
CM2:CM0 = 111
RF6/AN11/
SEG24
RF5/AN10/
CV
RF2/AN7/C1OUT*/SEG20
RF4/AN9/
SEG22
RF3/AN8/
SEG21
RF1/AN6/C2OUT*/SEG19
Four Inputs Multiplexed to Two Comparators
CM2:CM0 = 110
RF6/AN11/
SEG24
RF5/AN10/
CV
RF2/AN7/C1OUT*/SEG20
RF4/AN9/
SEG22
RF3/AN8/
SEG21
RF1/AN6/C2OUT*/SEG19
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
RF6/AN11/
SEG24
RF5/AN10/
CV
RF4/AN9/
SEG22
RF3/AN8/
SEG21
mode is changed, the comparator output level may not
be valid for the specified mode change delay shown in
Section 26.0 “Electrical Characteristics”.
REF
REF
REF
REF
Note:
CIS (CMCON<3>) is the Comparator Input Switch
/SEG23
/SEG23
/SEG23
/SEG23
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.
A
A
A
D
V
V
V
V
V
V
V
V
CIS = 0
CIS = 1
CIS = 0
CIS = 1
IN
IN
IN
IN
IN
IN
IN
IN
-
+
-
+
-
+
-
+
V
V
V
V
© 2007 Microchip Technology Inc.
C1
C2
C1
C2
IN
IN
IN
IN
-
+
-
+
V
V
V
V
IN
IN
IN
IN
CV
-
+
-
+
C1
C2
REF
C1OUT
C2OUT
Off (Read as ‘0’)
Off (Read as ‘0’)
C1
C2
From V
C1OUT
C2OUT
REF
C1OUT
C2OUT
Module