Datasheet

 2010-2012 Microchip Technology Inc. DS41412F-page 17
PIC18(L)F2X/4XK22
TABLE 1-2: PIC18(L)F2XK22 PINOUT I/O DESCRIPTIONS
Pin Number
Pin Name
Pin
Type
Buffer
Type
Description
PDIP,
SOIC
QFN,
UQFN
227
RA0/C12IN0-/AN0
RA0 I/O TTL Digital I/O.
C12IN0- I Analog Comparators C1 and C2 inverting input.
AN0 I Analog Analog input 0.
328
RA1/C12IN1-/AN1
RA1 I/O TTL Digital I/O.
C12IN1- I Analog Comparators C1 and C2 inverting input.
AN1 I Analog Analog input 1.
41
RA2/C2IN+/AN2/DACOUT/VREF-
RA2 I/O TTL Digital I/O.
C2IN+ I Analog Comparator C2 non-inverting input.
AN2 I Analog Analog input 2.
DACOUT O Analog DAC Reference output.
V
REF- I Analog A/D reference voltage (low) input.
52
RA3/C1IN+/AN3/VREF+
RA3 I/O TTL Digital I/O.
C1IN+ I Analog Comparator C1 non-inverting input.
AN3 I Analog Analog input 3.
V
REF+ I Analog A/D reference voltage (high) input.
63
RA4/CCP5/C1OUT/SRQ/T0CKI
RA4 I/O ST Digital I/O.
CCP5 I/O ST Capture 5 input/Compare 5 output/PWM 5 output.
C1OUT O CMOS Comparator C1 output.
SRQ O TTL SR latch Q output.
T0CKI I ST Timer0 external clock input.
74
RA5/C2OUT/SRNQ/SS1/HLVDIN/AN4
RA5 I/O TTL Digital I/O.
C2OUT O CMOS Comparator C2 output.
SRNQ O TTL SR latch Q
output.
S
S1 I TTL SPI slave select input (MSSP).
HLVDIN I Analog High/Low-Voltage Detect input.
AN4 I Analog Analog input 4.
10 7
RA6/CLKO/OSC2
RA6 I/O TTL Digital I/O.
CLKO O In RC mode, OSC2 pin outputs CLKOUT which has
1/4 the frequency of OSC1 and denotes the instruction
cycle rate.
OSC2 O Oscillator crystal output. Connects to crystal or resonator
in Crystal Oscillator mode.
Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output; ST = Schmitt Trigger input with CMOS levels;
I = Input; O = Output; P = Power.
Note 1: Default pin assignment for P2B, T3CKI, CCP3 and CCP2 when Configuration bits PB2MX, T3CMX, CCP3MX and
CCP2MX are set.
2: Alternate pin assignment for P2B, T3CKI, CCP3 and CCP2 when Configuration bits PB2MX, T3CMX, CCP3MX and
CCP2MX are clear.