PIC18F6585 Datasheet, PDF (139/496 Pages) Microchip Technology – 64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module

PIC18F6585/8585/6680/8680
FIGURE 10-11: PORTE BLOCK DIAGRAM IN I/O MODE
Peripheral Out Select
Peripheral Data Out
RD LATE
Data Bus
WR LATE
or WR PORTE
WR TRISE
DQ
CK Q
Data Latch
DQ
CK Q
TRIS Latch
0
1
TRIS
Override
VDD
P
N
VSS
RD TRISE
Peripheral Enable
Q
RD PORTE
Peripheral Data In
Note 1: I/O pins have diode protection to VDD and VSS.
Schmitt
Trigger
D
EN
I/O pin⁽¹⁾
TRIS OVERRIDE
Pin Override
RE0 Yes
RE1 Yes
RE2 Yes
RE3 Yes
RE4 Yes
RE5 Yes
RE6 Yes
RE7 Yes
Peripheral
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
External Bus
FIGURE 10-12: PORTE BLOCK DIAGRAM IN SYSTEM BUS MODE (PIC18F8X8X ONLY)
RD PORTE
QD
ENEN
RD LATE
Data Bus
WR LATE
or PORTE
WR TRISE
DQ
CK
Data Latch
DQ
CK
TRIS Latch
Port ₀
Data ₁
RD TRISE
System Bus
Control
Bus Enable
Data/TRIS Out
Drive Bus
Instruction Register
Instruction Read
Note 1: I/O pins have protection diodes to VDD and VSS.
I/O pin⁽¹⁾
TTL
Input
Buffer
 2004 Microchip Technology Inc.
DS30491C-page 137