Datasheet

 2010 Microchip Technology Inc. DS39635C-page 147
PIC18F6310/6410/8310/8410
TABLE 11-17: PORTJ FUNCTIONS
TABLE 11-18: SUMMARY OF REGISTERS ASSOCIATED WITH PORTJ
Pin Name Function
TRIS
Setting
I/O
I/O
Type
Description
RJ0/ALE RJ0 0 O DIG LATJ<0> data output.
1 I ST PORTJ<0> data input.
ALE
x O DIG External memory interface address latch enable control output; takes
priority over digital I/O.
RJ1/OE
RJ1 0 O DIG LATJ<1> data output.
1 I ST PORTJ<1> data input.
OE
x O DIG External memory interface output enable control output; takes priority
over digital I/O.
RJ2/WRL
RJ2 0 O DIG LATJ<2> data output.
1 I ST PORTJ<2> data input.
WRL
x O DIG External memory bus write low byte control; takes priority over
digital I/O.
RJ3/WRH
RJ3 0 O DIG LATJ<3> data output.
1 I ST PORTJ<3> data input.
WRH
x O DIG External memory interface write high byte control output; takes priority
over digital I/O.
RJ4/BA0 RJ4 0 O DIG LATJ<4> data output.
1 I ST PORTJ<4> data input.
BA0 x O DIG External Memory Interface Byte Address 0 control output; takes prior-
ity over digital I/O.
RJ5/CE
RJ5 0 O DIG LATJ<5> data output.
1 I ST PORTJ<5> data input.
CE
x O DIG External memory interface chip enable control output; takes priority
over digital I/O.
RJ6/LB
RJ6 0 O DIG LATJ<6> data output.
1 I ST PORTJ<6> data input.
LB
x O DIG External memory interface lower byte enable control output; takes
priority over digital I/O.
RJ7/UB
RJ7 0 O DIG LATJ<7> data output.
1 I ST PORTJ<7> data input.
UB
x O DIG External memory interface upper byte enable control output; takes
priority over digital I/O.
Legend: O = Output, I = Input, DIG = Digital Output, ST = Schmitt 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 RJ7 RJ6 RJ5 RJ4 RJ3 RJ2 RJ1 RJ0 66
LATJ LATJ Output Latch Register 66
TRISJ PORTJ Data Direction Register 65