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18F8680 Datasheet(PDF) 153 Page - Microchip Technology

Part # 18F8680
Description  64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module
PDF  496 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

18F8680 Datasheet(HTML) 153 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS30491C-page 151
PIC18F6585/8585/6680/8680
TABLE 10-17: PORTJ FUNCTIONS
TABLE 10-18: SUMMARY OF REGISTERS ASSOCIATED WITH PORTJ
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
ST
Input/output port pin or write high byte control for external memory
interface.
RJ4/BA0
bit 4
ST
Input/output port pin or byte address 0 control for external memory
interface.
RJ5/CE
bit 5
ST
Input/output port pin or external memory chip enable.
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
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR, BOR
Value on
all other
Resets
PORTJ
Read PORTJ pin/Write PORTJ Data Latch
xxxx xxxx
uuuu uuuu
LATJ
LATJ Data Output Register
xxxx xxxx
uuuu uuuu
TRISJ
Data Direction Control Register for PORTJ
1111 1111
1111 1111
Legend: x = unknown, u = unchanged



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