Datasheet

PIC18F6390/6490/8390/8490
DS39629C-page 130 © 2007 Microchip Technology Inc.
TABLE 9-18: PORTJ FUNCTIONS
TABLE 9-19: SUMMARY OF REGISTERS ASSOCIATED WITH PORTJ
Pin Name Function
TRIS
Setting
I/O Buffer Description
RJ0/SEG32 RJ0 0 O DIG LATJ<0> data output; disabled when LCD segment enabled.
1 I ST PORTJ<0> data input.
SEG32 x O ANA Segment 32 analog output for LCD.
RJ1/SEG33 RJ1 0 O DIG LATJ<1> data output; disabled when LCD segment enabled.
1 I ST PORTJ<1> data input.
SEG33 x O ANA Segment 33 analog output for LCD.
RJ2/SEG34 RJ2 0 O DIG LATJ<2> data output; disabled when LCD segment enabled.
1 I ST PORTJ<2> data input.
SEG34 x O ANA Segment 34 analog output for LCD.
RJ3/SEG35 RJ3 0 O DIG LATJ<3> data output; disabled when LCD segment enabled.
1 I ST PORTJ<3> data input.
SEG35 x O ANA Segment 35 analog output for LCD.
RJ4/SEG39 RJ4 0 O DIG LATJ<4> data output; disabled when LCD segment enabled.
1 I ST PORTJ<4> data input.
SEG39 x O ANA Segment 39 analog output for LCD.
RJ5/SEG38 RJ5 0 O DIG LATJ<5> data output; disabled when LCD segment enabled.
1 I ST PORTJ<5> data input.
SEG38 x O ANA Segment 38 analog output for LCD.
RJ6/SEG37 RJ6 0 O DIG LATJ<6> data output; disabled when LCD segment enabled.
1 I ST PORTJ<6> data input.
SEG37 x O ANA Segment 37 analog output for LCD.
RJ7/SEG36 RJ7 0 O DIG LATJ<7> data output; disabled when LCD segment enabled.
1 I ST PORTJ<7> data input.
SEG36 x O ANA Segment 36 analog output for LCD.
Legend: O = Output, I = 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).
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset Values
on Page
PORTJ Read PORTJ pin/Write PORTJ Data Latch 62
LATJ LATJ Data Output Register 62
TRISJ PORTJ Data Direction Register 62
LCDSE4 SE39 SE38 SE37 SE36 SE35 SE34 SE33 SE32 64