PIC18F23K22 Datasheet, PDF (134/492 Pages) Microchip Technology – 28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology

PIC18(L)F2X/4XK22
TABLE 10-1: PORTA I/O SUMMARY
Pin Name
Function
TRIS ANSEL
Setting Setting
Pin
Type
Buffer
Type
Description
RA0/C12IN0-/AN0
RA0
0
1
O
DIG LATA<0> data output; not affected by analog input.
1
0
I
TTL PORTA<0> data input; disabled when analog input
enabled.
C12IN0-
1
1
I
AN Comparators C1 and C2 inverting input.
AN0
1
1
I
AN Analog input 0.
RA1/C12IN1-/AN1
RA1
0
1
O
DIG LATA<1> data output; not affected by analog input.
1
0
I
TTL PORTA<1> data input; disabled when analog input
enabled.
C12IN1-
1
1
I
AN Comparators C1 and C2 inverting input.
AN1
1
1
I
AN Analog input 1.
RA2/C2IN+/AN2/
RA2
0
1
O
DIG LATA<2> data output; not affected by analog input; disabled
DACOUT/VREF-
when DACOUT enabled.
1
0
I
TTL PORTA<2> data input; disabled when analog input
enabled; disabled when DACOUT enabled.
C2IN+
1
1
I
AN Comparator C2 non-inverting input.
AN2
1
1
I
AN Analog output 2.
DACOUT
x
1
O
AN DAC Reference output.
VREF-
1
1
I
AN A/D reference voltage (low) input.
RA3/C1IN+/AN3/
RA3
0
1
O
DIG LATA<3> data output; not affected by analog input.
VREF+
1
0
I
TTL PORTA<3> data input; disabled when analog input enabled.
C1IN+
1
1
I
AN Comparator C1 non-inverting input.
AN3
1
1
I
AN Analog input 3.
VREF+
1
1
I
AN A/D reference voltage (high) input.
RA4/CCP5/
C1OUT/SRQ/
T0CKI
RA4
0
1
CCP5
0
1
O
DIG LATA<4> data output.
0
I
TTL PORTA<4> data input; default configuration on POR.
1
O
DIG CCP5 Compare output/PWM output, takes priority over
RA4 output.
1
0
I
ST Capture 5 input/Compare 5 output/ PWM 5 output.
C1OUT
0
1
O
DIG Comparator C1 output.
SRQ
0
1
O
DIG SR Latch Q output; take priority over CCP 5 output.
T0CKI
1
0
I
ST Timer0 external clock input.
RA5/C2OUT/
SRNQ/SS1/
HLVDIN/AN4
RA5
0
1
C2OUT
0
1
O
DIG LATA<5> data output; not affected by analog input.
0
I
TTL PORTA<5> data input; disabled when analog input enabled.
1
O
DIG Comparator C2 output.
SRNQ
1
O
DIG SR Latch Q output.
SS1
1
0
I
TTL SPI slave select input (MSSP1).
HLVDIN
1
1
I
AN High/Low-Voltage Detect input.
AN4
1
1
I
AN A/D input 4.
Legend:
AN = Analog input or output; TTL = TTL compatible input; HV = High Voltage; OD = Open Drain; XTAL = Crystal; CMOS
= CMOS compatible input or output; ST = Schmitt Trigger input with CMOS levels; I²C^TM = Schmitt Trigger input with
I²C.
DS41412B-page 134
Preliminary
 2010 Microchip Technology Inc.