PIC18F6585 Datasheet, PDF (136/496 Pages) Microchip Technology – 64/68/80-Pin High-Performance, 64-Kbyte Enhanced Flash Microcontrollers with ECAN Module

PIC18F6585/8585/6680/8680
FIGURE 10-10: PORTD BLOCK DIAGRAM IN SYSTEM BUS MODE (PIC18F8X8X ONLY)
RD PORTD
QD
ENEN
RD LATD
Data Bus
WR LATD
or PORTD
WR TRISD
DQ
CK
Data Latch
DQ
CK
TRIS Latch
Port ₀
Data
1
RD TRISD
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
DS30491C-page 134
 2004 Microchip Technology Inc.