PIC32MX795F512LT-80ISLASHPF datasheet(149/256 Pages) MICROCHIP

149 / 256 page

DS61156G-page 149

PIC32MX5XX/6XX/7XX

20.0 PARALLEL MASTER PORT

(PMP)

The PMP is a parallel 8-bit/16-bit input/output module

specifically designed to communicate with a wide

variety of parallel devices, such as communications

peripherals, LCDs, external memory devices and

microcontrollers. Because the interface to parallel

peripherals varies significantly, the PMP module is

highly configurable. Figure 20-1 shows the PMP

module pinout and its connections to external devices.

Key features of the PMP module include:

• 8-bit, 16-bit interface

• Up to 16 programmable address lines

• Up to two Chip Select lines

• 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

• Parallel Slave Port support

- Legacy addressable

- Address support

- 4-byte deep auto-incrementing buffer

• Programmable wait states

• Operates during CPU Sleep and Idle modes

• Fast bit manipulation using CLR, SET and INV

registers

• Freeze option for in-circuit debugging

FIGURE 20-1:

PMP MODULE PINOUT AND CONNECTIONS TO EXTERNAL DEVICES

Note 1:

This data sheet summarizes the features

of the PIC32MX5XX/6XX/7XX family of

devices. It is not intended to be a

comprehensive reference source. To

complement the information in this data

sheet, refer to Section 13. “Parallel

Master Port (PMP)”

(DS61128) in the

“PIC32 Family Reference Manual”

, which

is available from the Microchip web site

(www.microchip.com/PIC32).

Some registers and associated bits

described in this section may not be

available on all devices. Refer to

Section 4.0 “Memory Organization”

this data sheet for device-specific register

and bit information.

Note:

On 64-pin devices, the PMD<15:8> data

pins are not available.

PMA<0>

PMA<14>

PMA<15>

PMRD

PMWR

PMENB

PMRD/PMWR

PMCS1

PMA<1>

PMA<13:2>

PMALL

PMALH

PMCS2

Flash

Address Bus

Data Bus

Control Lines

PIC32MX5XX/6XX/7XX

LCD

FIFO

Microcontroller

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

Up to 16-bit Address

Parallel

Buffer

PMD<15:8>(1)

PMD<7:0>

Master Port

Note 1: On 64-pin devices, data pins, PMD<15:8>, are not available in 16-bit Master modes.

EEPROM

SRAM

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