PIC18F45J10 Datasheet, PDF (97/358 Pages) Microchip Technology – 28/40/44-Pin High-Performance RISC Microcontrollers with nanoWatt Technology

PIC18F45J10 FAMILY
TABLE 9-3: PORTA I/O SUMMARY
Pin
Function
TRIS
Setting
I/O
I/O
Type
Description
RA0/AN0
RA0
0
O DIG LATA<0> data output; not affected by analog input.
1
I
TTL PORTA<0> data input; disabled when analog input enabled.
AN0
1
I ANA A/D input channel 0 and Comparator C1- input. Default input
configuration on POR; does not affect digital output.
RA1/AN1
RA1
0
O DIG LATA<1> data output; not affected by analog input.
1
I
TTL PORTA<1> data input; disabled when analog input enabled.
AN1
1
I ANA A/D input channel 1 and Comparator C2- input. Default input
configuration on POR; does not affect digital output.
RA2/AN2/
VREF-/CVREF
RA2
0
O DIG LATA<2> data output; not affected by analog input. Disabled when
CVREF output enabled.
1
I
TTL PORTA<2> data input. Disabled when analog functions enabled;
disabled when CVREF output enabled.
AN2
1
I ANA A/D input channel 2 and Comparator C2+ input. Default input
configuration on POR; not affected by analog output.
VREF-
1
I ANA A/D and comparator voltage reference low input.
CVREF
x
O ANA Comparator voltage reference output. Enabling this feature disables
digital I/O.
RA3/AN3/VREF+
RA3
0
O DIG LATA<3> data output; not affected by analog input.
1
I
TTL PORTA<3> data input; disabled when analog input enabled.
AN3
1
I ANA A/D input channel 3 and Comparator C1+ input. Default input
configuration on POR.
VREF+
1
I ANA A/D and comparator voltage reference high input.
RA5/AN4/SS1/
C2OUT
RA5
0
O DIG LATA<5> data output; not affected by analog input.
1
I
TTL PORTA<5> data input; disabled when analog input enabled.
AN4
1
I ANA A/D input channel 4. Default configuration on POR.
SS1
1
I
TTL Slave select input for MSSP1 (MSSP1 module).
C2OUT
0
O DIG Comparator 2 output; takes priority over port data.
OSC2/CLKO
OSC2
x
O ANA Main oscillator feedback output connection (HS mode).
CLKO
x
O DIG System cycle clock output (FOSC/4) in RC and EC Oscillator modes.
OSC1/CLKI
OSC1
x
I ANA Main oscillator input connection.
CLKI
x
I ANA Main clock input connection.
Legend: DIG = Digital level output; TTL = TTL input buffer; ST = Schmitt Trigger input buffer; ANA = Analog level input/output;
x = Don’t care (TRIS bit does not affect port direction or is overridden for this option).
© 2007 Microchip Technology Inc.
Preliminary
DS39682C-page 95