
PIC18C601/801
DS39541A-page 66
Advance Information
2001 Microchip Technology Inc.
FIGURE 5-3:
8-BIT DE-MULTIPLEXED MODE EXAMPLE
TABLE 5-2:
8-BIT DE-MULTIPLEXED MODE CONTROL SIGNALS
FIGURE 5-4:
8-BIT DE-MULTIPLEXED MODE TIMING
Name
8-bit De-Mux Mode
Function
RG0/ALE
ALE
Address Latch Enable (ALE) control pin
RG1/OE
OE
Output Enable (OE) control pin
RG2/WRL
WRL
Write Low (WRL) control pin
RG4/BA0
BA0
Byte address bit 0
RF3/CSIO
CSIO
RF4/CS2
CS2
RF5/CS1
CS1
D<7:0>
PIC18C801
BA0
OE
WRL
ALE
A<19:16>, AD<15:0>
CS1
A<x:1>
D<7:0>
OE
WR(1)
CE
D<7:0>
A<20:0>
Note 1: This signal only applies to Table Writes. See
Section 6.0, Table Reads and Writes.
A0
A16, AD<15:8>
ALE
OE
AD<7:0>
BA0
Opcode Fetch
MOVLW 55h
from 007556h
Q1
Q2
Q3
Q4
03Ah
55h
0Eh