Datasheet

© 2007-2012 Microchip Technology Inc. DS70293G-page 265
PIC24HJ32GP302/304, PIC24HJ64GPX02/X04 AND PIC24HJ128GPX02/X04
24.0 PARALLEL MASTER PORT
(PMP)
The Parallel Master Port (PMP) module is a parallel
8-bit I/O module, specifically designed to communi-
cate with a wide variety of parallel devices, such as
communication peripherals, LCDs, external memory
devices and microcontrollers. Because the interface
to parallel peripherals varies significantly, the PMP is
highly configurable.
Key features of the PMP module include:
• Fully Multiplexed Address/Data Mode
• Demultiplexed or Partially Multiplexed Address/
Data Mode:
- Up to 11 address lines with single Chip Select
- Up to 12 address lines without Chip Select
• Single Chip Select Line
• Programmable Strobe Options:
- Individual Read and Write Strobes or;
- Read/Write
Strobe with Enable Strobe
• Address Auto-Increment/Auto-Decrement
• Programmable Address/Data Multiplexing
• Programmable Polarity on Control Signals
• Legacy Parallel Slave Port Support
• Enhanced Parallel Slave Support:
- Address Support
- 4-Byte Deep Auto-Incrementing Buffer
• Programmable Wait States
• Selectable Input Voltage Levels
FIGURE 24-1: PMP MODULE OVERVIEW
Note 1: This data sheet summarizes the features
of the PIC24HJ32GP302/304,
PIC24HJ64GPX02/X04 and
PIC24HJ128GPX02/X04 families of
devices. It is not intended to be a compre-
hensive reference source. To comple-
ment the information in this data sheet,
refer to Section 35. “Parallel Master
Port (PMP)” (DS70299) of the
“dsPIC33F/PIC24H Family Reference
Manual”, which is available from the
Microchip web site (www.microchip.com).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
PMA<0>
PMBE
PMRD
PMWR
PMD<7:0>
PMENB
PMRD/PMWR
PMCS1
PMA<1>
PMA<10:2>
(1)
PMALL
PMALH
PMA<7:0>
PMA<10:8>
EEPROM
Address Bus
Data Bus
Control Lines
PIC24H
LCD
FIFO
Microcontroller
8-Bit Data
Up to 11-Bit Address
Parallel Master Port
Buffer
Note 1: 28-pin devices do not have PMA<10:2>.
PMA<14>