PIC18LF8490-I/PT Microchip Technology, PIC18LF8490-I/PT Datasheet - Page 247

• 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

19.9
A simplified circuit for an analog input is shown in
Figure 19-4. Since the analog pins are connected to a
digital output, they have reverse biased diodes to V
and V
V
FIGURE 19-4:
TABLE 19-1:
© 2007 Microchip Technology Inc.
CMCON
CVRCON
INTCON
PIR2
PIE2
IPR2
PORTF
LATF
TRISF
Legend: — = unimplemented, read as ‘0’. Shaded cells are unused by the comparator module.
SS
Name
and V
SS
. The analog input, therefore, must be between
Analog Input Connection
Considerations
DD
. If the input voltage deviates from this
VA
Read PORTF pins, Write LATF Latch
LATF Data Output Register
PORTF Data Direction Register
GIE/GIEH PEIE/GIEL TMR0IE
Legend: C
OSCFIF
OSCFIE
OSCFIP
CVREN
C2OUT
Bit 7
REGISTERS ASSOCIATED WITH COMPARATOR MODULE
R
S
< 10k
COMPARATOR ANALOG INPUT MODEL
V
I
R
R
VA
LEAKAGE
A
T
PIN
IC
S
CVROE
C1OUT
IN
CMIE
CMIP
CMIF
Bit 6
C
5 pF
PIN
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to various junctions
= Interconnect Resistance
= Source Impedance
= Analog Voltage
C2INV
CVRR
Bit 5
—
—
—
PIC18F6390/6490/8390/8490
V
DD
CVRSS
INT0IE
C1INV
DD
Bit 4
—
—
—
V
V
T
T
= 0.6V
= 0.6V
range by more than 0.6V in either direction, one of the
diodes is forward biased and a latch-up condition may
occur. A maximum source impedance of 10 kΩ is
recommended for the analog sources. Any external
component connected to an analog input pin, such as
a capacitor or a Zener diode, should have very little
leakage current.
BCLIF
BCLIE
BCLIP
CVR3
RBIE
Bit 3
CIS
I
±500 nA
V
LEAKAGE
TMR0IF
HLVDIE
HLVDIP
SS
HLVDIF
CVR2
Bit 2
CM2
R
IC
TMR3IF
TMR3IE
TMR3IP
INT0IF
CVR1
Bit 1
CM1
CCP2IF
CCP2IE
CCP2IP
Comparator
Input
CVR0
DS39629C-page 245
RBIF
Bit 0
CM0
on Page
Values
Reset
61
61
59
61
61
61
62
62
62