Datasheet

2009-2011 Microchip Technology Inc. DS41365E-page 11
PIC18(L)F1XK22
TABLE 1-2: PIC18(L)F1XK22 PIN SUMMARY
Pin Name
Pin
Number
Pin
Type
Buffer
Type
Description
DIL
QFN
RA0/AN0/CVREF/VREF-/C1IN+/INT0/PGD
RA0
AN0
CV
REF
VREF-
C1IN+
INT0
PGD
19 16
I/O
I
O
I
I
I
I/O
TTL
Analog
Analog
Analog
Analog
ST
ST
Digital I/O
ADC channel 0
DAC reference voltage output
ADC and DAC reference voltage (low) input
Comparator C1 non-inverting input
External interrupt 0
ICSP™ programming data pin
RA1/AN1/C12IN0-/V
REF+/INT1/PGC
RA1
AN1
C12IN0-
V
REF+
INT1
PGC
18 15
I/O
I
1
I
I
I/O
TTL
Analog
Analog
Analog
ST
ST
Digital I/O
ADC channel 1
Comparator C1 and C2 non-inverting input
ADC and DAC reference voltage (high) input
External interrupt 1
ICSP™ programming clock pin
RA2/AN2/C1OUT/T0CKI/INT2/SRQ
RA2
AN2
C1OUT
T0CKI
INT2
SRQ
17 14
I/O
I
I
I
O
ST
Analog
CMOS
ST
ST
CMOS
Digital I/O
ADC channel 2
Comparator C1 output
Timer0 external clock input
External interrupt 2
SR latch output
RA3/MCLR
/VPP
RA3
MCLR
VPP
41
I
I
P
ST
ST
Digital input
Active-low Master Clear with internal pull-up
High voltage programming input
RA4/AN3/OSC2/CLKOUT
RA4
AN3
OSC2
CLKOUT
320
I/O
I
O
O
TTL
Analog
XTAL
CMOS
Digital I/O
ADC channel 3
Oscillator crystal output. Connect to crystal or resonator
in Crystal Oscillator mode
In RC mode, OSC2 pin outputs CLKOUT which
has 1/4 the frequency of OSC1 and denotes
the instruction cycle rate
RA5/OSC1/CLKIN/T13CKI
RA5
OSC1
CLKIN
T13CKI
219
I/O
I
I
I
TTL
XTAL
CMOS
ST
Digital I/O
Oscillator crystal input or external clock input
ST buffer when configured in RC mode; analog other
wise
External clock source input. Always associated with the
pin function OSC1 (See related OSC1/CLKIN, OSC2,
CLKOUT pins
Timer0 and Timer3 external clock input
RB4/AN10/SDI/SDA
RB4
AN10
SDI
SDA
13 10
I/O
I
I
I/O
TTL
Analog
ST
ST
Digital I/O
ADC channel 10
SPI data in
I
2
C™ data I/O
RB5/AN11/RX/DT
RB5
AN11
RX
DT
12 9
I/O
I
I
I/O
TLL
Analog
ST
ST
Digital I/O
ADC channel 11
EUSART asynchronous receive
EUSART synchronous data (see related RX/TX)
Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output
ST = Schmitt Trigger input I = Input
O = Output P = Power
XTAL= Crystal Oscillator