PIC32MX440F256H-80I Datasheet, PDF (468/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
20.5.1 I/O PIN CONFIGURATION
The following table provides a summary of settings
required to enable the I/O pin resources used with this
module. The PMAEN register controls the functionality
of pins PMA<15:0>. Setting any PMAEN bit = 1 config-
ures the corresponding PMA pin as an address line.
Those bits set = 0 remain as general purpose I/O pins.
TABLE 20-13: I/O PIN CONFIGURATION
Required Settings for Module
Pin Control
I/O Pin
Name
Required⁽¹⁾
Module
Control
Bit Field
TRIS
Pin
Type
Buffer
Type⁽²⁾
Description
PMPCS2 /
Yes
PMA15
ON CSF<1:0>, CS2, —
PTEN15
O ST/TTL PMP Chip Select 2 /
Address A15
PMPCS1 /
Yes
PMA14
ON
CSF<1:0>,
— O ST/TTL PMP Chip Select 1 /
CS1
Address A14
PTEN14
PMA<13:2>
Yes
ON
PTEN<13:2> — O ST/TTL PMP Address A13..A2
PMA1 /
PMALH
Yes
ON
PTEN<1>
— I,O ST/TTL PMP Address A1 /
Address Latch Hi
PMA0 /
PMALL
Yes
ON
PTEN<0>
— I,O ST/TTL PMP Address A0 /
Address Latch Lo
PMRD /
PMWR
Yes
ON
PTRDEN
— O ST/TTL PMP Read / Write Control
PMWR /
PMENB
Yes
ON
PTWREN
— O ST/TTL PMP Write / Enable Control
PMD<15:0>
Yes
ON
MODE16,
— I,O ST/TTL PMP Bidirectional Data Bus
ADRMUX<1:0>
D15..D0
Legend: TTL = TTL compatible input or output, ST = Schmitt Trigger input with CMOS levels, I = Input, O = Output
Note: 1. Depending on the PMP mode and the user’s application, these pins may not be required. If not enabled, these
pins can be used as general purpose I/O.
2. Default buffer type is ST.
DS61143E-page 466
Preliminary
© 2008 Microchip Technology Inc.