Datasheet

 2012 Microchip Technology Inc. DS30684A-page 19
PIC18(L)F2X/45K50
TABLE 1-3: PIC18(L)F45K50 PINOUT I/O DESCRIPTIONS
Pin Number
Pin Name
Pin
Type
Buffer
Type
Description
PDIP TQFP UQFN
21917
RA0/C12IN0-/AN0
RA0 I/O TTL/DIG Digital I/O.
C12IN0- I Analog Comparators C1 and C2 inverting input.
AN0 I Analog Analog input 0.
32018
RA1/C12IN1-/AN1
RA1 I/O TTL/DIG Digital I/O.
C12IN1- I Analog Comparators C1 and C2 inverting input.
AN1 I Analog Analog input 1.
42119
RA2/C2IN+/AN2/DACOUT/VREF-
RA2 I/O TTL/DIG 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.
52220
RA3/C1IN+/AN3/VREF+
RA3 I/O TTL/DIG 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.
62321
RA4/C1OUT/SRQ/T0CKI
RA4 I/O ST/DIG Digital I/O.
C1OUT O DIG Comparator C1 output.
SRQ O TTL SR latch Q output.
T0CKI I ST Timer0 external clock input.
72422
RA5/C2OUT/SRNQ/SS/HLVDIN/AN4
RA5 I/O TTL/DIG Digital I/O.
C2OUT O DIG Comparator C2 output.
SRNQ O DIG SR latch Q output.
SS I TTL SPI slave select input (MSSP).
HLVDIN I Analog High/Low-Voltage Detect input.
AN4 I Analog Analog input 4.
14 31 29
RA6/CLKO/OSC2
RA6 I/O TTL/DIG Digital I/O.
CLKO O DIG Outputs 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.
13 30 28
RA7/CLKI/OSC1
RA7 I/O TTL/DIG Digital I/O.
CLKI I CMOS External clock source input. Always associated with pin
function OSC1.
OSC1 I ST Oscillator crystal input or external clock source input ST buffer
when configured in RC mode; CMOS otherwise.
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 SDO, T3CKI and CCP2 when Configuration bits SDOMX, T3CMX and CCP2MX are set.
2: Alternate pin assignment for SDO, T3CKI and CCP2 when Configuration bits SDOMX, T3CMX and CCP2MX are clear.
3: Pin is “No Connect”, except on PIC18(L)F45K50 TQFP devices with ICPRT Configuration bit set.