PIC18F2450/4450
DS39760A-page 102
Advance Information
2006 Microchip Technology Inc.
TABLE 9-3:
PORTB I/O SUMMARY
Pin
Function
TRIS
Setting
I/O
I/O Type
Description
RB0/AN12/
INT0
RB0
0
OUT
DIG
LATB<0> data output; not affected by analog input.
1
IN
TTL
PORTB<0> data input; weak pull-up when RBPU bit is cleared.
Disabled when analog input enabled.(1)
AN12
1
IN
ANA
A/D input channel 12.(1)
INT0
1
IN
ST
External interrupt 0 input.
RB1/AN10/
INT1
RB1
0
OUT
DIG
LATB<1> data output; not affected by analog input.
1
IN
TTL
PORTB<1> data input; weak pull-up when RBPU bit is cleared.
Disabled when analog input enabled.(1)
AN10
1
IN
ANA
A/D input channel 10.(1)
INT1
1
IN
ST
External interrupt 1 input.
RB2/AN8/
INT2/VMO
RB2
0
OUT
DIG
LATB<2> data output; not affected by analog input.
1
IN
TTL
PORTB<2> data input; weak pull-up when RBPU bit is cleared.
Disabled when analog input enabled.(1)
AN8
1
IN
ANA
A/D input channel 8.(1)
INT2
1
IN
ST
External interrupt 2 input.
VMO
0
OUT
DIG
External USB transceiver VMO data output.
RB3/AN9/VPO
RB3
0
OUT
DIG
LATB<3> data output; not affected by analog input.
1
IN
TTL
PORTB<3> data input; weak pull-up when RBPU bit is cleared.
Disabled when analog input enabled.(1)
AN9
1
IN
ANA
A/D input channel 9.(1)
VPO
0
OUT
DIG
External USB transceiver VPO data output.
RB4/AN11/
KBI0
RB4
0
OUT
DIG
LATB<4> data output; not affected by analog input.
1
IN
TTL
PORTB<4> data input; weak pull-up when RBPU bit is cleared.
Disabled when analog input enabled.(1)
AN11
1
IN
ANA
A/D input channel 11.(1)
KBI0
1
IN
TTL
Interrupt-on-pin change.
RB5/KBI1/
PGM
RB5
0
OUT
DIG
LATB<5> data output.
1
IN
TTL
PORTB<5> data input; weak pull-up when RBPU bit is cleared.
KBI1
1
IN
TTL
Interrupt-on-pin change.
PGM
x
IN
ST
Single-Supply Programming mode entry (ICSP). Enabled by LVP
Configuration bit; all other pin functions disabled.
RB6/KBI2/
PGC
RB6
0
OUT
DIG
LATB<6> data output.
1
IN
TTL
PORTB<6> data input; weak pull-up when RBPU bit is cleared.
KBI2
1
IN
TTL
Interrupt-on-pin change.
PGC
x
IN
ST
Serial execution (ICSP) clock input for ICSP and ICD operation.(2)
RB7/KBI3/
PGD
RB7
0
OUT
DIG
LATB<7> data output.
1
IN
TTL
PORTB<7> data input; weak pull-up when RBPU bit is cleared.
KBI3
1
IN
TTL
Interrupt-on-pin change.
PGD
x
OUT
DIG
Serial execution data output for ICSP and ICD operation.(2)
x
IN
ST
Serial execution data input for ICSP and ICD operation.(2)
Legend:
OUT = Output, IN = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Buffer Input,
TTL = TTL Buffer Input, x = Don’t care (TRIS bit does not affect port direction or is overridden for this option)
Note
1:
Configuration on POR is determined by PBADEN Configuration bit. Pins are configured as analog inputs when
PBADEN is set and digital inputs when PBADEN is cleared.
2:
All other pin functions are disabled when ICSP or ICD operation is enabled.
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