PIC18F6520-I Datasheet, PDF (129/380 Pages) Micrel Semiconductor – 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D

PIC18F6520/8520/6620/8620/6720/8720
TABLE 10-17: PORTJ FUNCTIONS
Name
Bit# Buffer Type
Function
RJ0/ALE
bit 0
ST
Input/output port pin or address latch enable control for external memory
interface.
RJ1/OE
bit 1
ST
Input/output port pin or output enable control for external memory interface.
RJ2/WRL bit 2
ST
Input/output port pin or write low byte control for external memory interface.
RJ3/WRH bit 3
RJ4/BA0
bit 4
ST
Input/output port pin or write high byte control for external memory interface.
ST
Input/output port pin or byte address 0 control for external memory interface.
RJ5/CE
bit 5
ST
Input/output port pin or chip enable control for external memory interface.
RJ6/LB
bit 6
ST
Input/output port pin or lower byte select control for external memory
interface.
RJ7/UB
bit 7
ST
Input/output port pin or upper byte select control for external memory
interface.
Legend: ST = Schmitt Trigger input
TABLE 10-18: SUMMARY OF REGISTERS ASSOCIATED WITH PORTJ
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
PORTJ Read PORTJ pin/Write PORTJ Data Latch
LATJ
LATJ Data Output Register
TRISJ
Data Direction Control Register for PORTJ
Legend: x = unknown, u = unchanged
Value on
POR, BOR
Value on
all other
Resets
xxxx xxxx
xxxx xxxx
1111 1111
uuuu uuuu
uuuu uuuu
1111 1111
 2004 Microchip Technology Inc.
DS39609B-page 127