Microchip Technology DV164136 Data Sheet
2007-2012 Microchip Technology Inc.
DS39778E-page 189
PIC18F87J11 FAMILY
12.4
Application Examples
This section introduces some potential applications for
the PMP module.
the PMP module.
12.4.1
MULTIPLEXED MEMORY OR
PERIPHERAL
PERIPHERAL
demonstrates the hookup of a memory or
other addressable peripheral in Full Multiplex mode.
Consequently, this mode achieves the best pin saving
from the microcontroller perspective. However, for this
configuration, there needs to be some external latches
to maintain the address.
Consequently, this mode achieves the best pin saving
from the microcontroller perspective. However, for this
configuration, there needs to be some external latches
to maintain the address.
FIGURE 12-27:
EXAMPLE OF A MULTIPLEXED ADDRESSING APPLICATION
PMD<7:0>
PMALH
D<7:0>
373
A<15:0>
D<7:0>
A<7:0>
373
PMRD
PMWR
OE
WR
CE
PIC18F
Address Bus
Data Bus
Control Lines
Data Bus
Control Lines
PMCS
PMALL
A<15:8>