Microchip PIC32MX170F512H Manual

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Side 1/64

Section 13. Parallel Master Port (PMP)

HIGHLIGHTS

This section of the manual contains the following major topics:

13.1 Introduction .................................................................................................................. 13-2

13.2 Control Registers ......................................................................................................... 13-3

13.3 Master Modes of Operation ....................................................................................... 13-18

13.4 Slave Modes of Operation ......................................................................................... 13-41

13.5 Interrupts.................................................................................................................... 13-48

13.6 Operation in Power-Saving and Debug Modes.......................................................... 13-50

13.7 Effects of Various Resets........................................................................................... 13-50

13.8 Parallel Master Port Applications............................................................................... 13-51

13.9 Parallel Slave Port Application...................................................................................13-56

13.10 Direct Memory Access Support ................................................................................. 13-56

13.11 I/O Pin Control ........................................................................................................... 13-57

13.12 Related Application Notes..........................................................................................13-60

13.13 Revision History......................................................................................................... 13-61

PIC32 Family Reference Manual

13.1 INTRODUCTION

The Parallel Master Port (PMP) is a parallel 8-bit/16-bit I/O module specifically designed to

communicate with a wide variety of parallel devices such as communications peripherals, LCDs,

external memory devices and microcontrollers. Because the interfaces to parallel peripherals

vary significantly, the PMP module is highly configurable. The key features of the PMP module

include:

• Up to 24 programmable address lines

• Up to two Chip Select lines with two alternate Chip Selects for extended addressing

• 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 bytes deep, auto-incrementing buffer

• Schmitt Trigger or TTL input buffers

• Programmable Wait states

• Freeze option for in-circuit debugging

• Separate configurable read/write registers or dual buffers for Master mode (not available on

all devices)

Figure 13-1: PMP Module Pinout and Connections to External Devices

Note: This family reference manual section is meant to serve as a complement to device

data sheets. Depending on the device variant, this manual section may not apply to

all PIC32 devices.

Please consult the note at the beginning of the “Parallel Master Port (PMP)”

chapter in the current device data sheet to check whether this document supports

the device you are using.

Device data sheets and family reference manual sections are available for

download from the Microchip Worldwide Web site at: http://www.microchip.com

PMA0

PMA14

PMA15

PMRD

PMWR

PMENB

PMRD/PMWR

PMCS1

PMA1

PMA<13:2>

(2)

PMALL

PMALH

PMCS2

EEPROM

Address Bus

Data Bus

Control Lines

LCD FIFO

Microcontroller

8-bit/16-bit data (with or without multiplexed addressing)

Up to 24-bit address

buffer

PMD<15:8>

(1)

PMA<7:0>

PMA<15:8>

PMD<7:0>

Parallel Master Port

PIC32

Note 1: The PMD<15:8> data pins are only available on PIC32 devices with 100 or more pins.

2: 24-bit addressing is available in Extended mode.

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Kategori:	Ikke kategoriseret
Model:	PIC32MX170F512H

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