PIC32MX440F256H-80I Datasheet, PDF (22/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
TABLE 1-4: PIC32MX3XX/4XX PINOUT DESCRIPTIONS – GENERAL PURPOSE (CONTINUED)
Function
Pin Number
I/O
64-pin 100-pin
Input
Buffer
Description
RA0
—
17
I/O
ST PORTA Digital I/O
RA1
RA2
RA3
RA4
RA5
RA6
RA7
RA9
RA10
RA14
RA15
—
38
I/O
ST
Notes: On 100-pin devices, JTAG program/debug port is multi-
—
58
I/O
ST
—
59
I/O
ST
plexed with port pins RA0, RA1, RA4 and RA5. At Reset,
these pins are controlled by the JTAG port. To use these
pins for general purpose I/O, the user’s application code
—
60
I/O
ST
must clear JTAGEN (DDPCON<3>) bit = 0. To use these
—
61
I/O
ST
pins for JTAG program/debug, the user’s application
—
91
I/O
ST
—
92
I/O
ST
—
28
I/O
ST
code must maintain JTAGEN bit = 1.
On specific 100-pin devices, the instruction TRACE port
is multiplexed with PORTA pins RA6, RA7; PORTG pins
RG12, RG13 and RG14. At Power-on Reset, these pins
—
29
I/O
ST
are general purpose I/O pins. To maintain these pins as
—
66
I/O
ST
—
67
I/O
ST
general purpose I/O pins, the user’s application code
must maintain TROEN (DDPCON<2>) bit = 0. To use
these pins as instruction TRACE pins, TROEN must be
set = 1.
RB0
16
25
I/O
ST PORTB Digital I/O
RB1
RB2
RB3
RB4
RB5
RB6
15
24
I/O
ST
Note: On 64-pin devices, JTAG program/debug port is multi-
14
23
I/O
ST
13
22
I/O
ST
plexed with port pins RB10, RB11, RB12 and RB13. At
Reset, these pins are controlled by the JTAG port. To use
these pins for general purpose I/O, the user’s application
12
21
I/O
ST
code must clear JTAGEN (DDPCON<3>) bit = 0. To use
11
20
I/O
ST
17
26
I/O
ST
these pins for JTAG program/debug, the user’s
application code must maintain JTAGEN bit = 1.
RB7
18
27
I/O
ST
RB8
21
32
I/O
ST
RB9
22
33
I/O
ST
RB10
23
34
I/O
ST
RB11
24
35
I/O
ST
RB12
27
41
I/O
ST
RB13
28
42
I/O
ST
RB14
29
43
I/O
ST
RB15
30
44
I/O
ST
RC1
—
6
I/O
ST PORTC Digital I/O
RC2
—
7
I/O
ST
RC3
—
8
I/O
ST
RC4
—
9
I/O
ST
RC12
39
63
I/O
ST
RC13
47
73
I/O
ST
RC14
48
74
I/O
ST
RC15
40
64
I/O
ST
Legend:
Note:
TTL = TTL input buffer
ANA = Analog level input/output
ST = Schmitt Trigger input buffer
I²C™ = I²C/SMBus input buffer
In some cases, I/O pins are multiplexed with more than one peripheral. In general, the dominant output control of a
multiplexed I/O pin can be determined by the order of the peripheral output names assigned to a pin (read from left to
right). Multiplexed peripheral inputs have no priority.
DS61143E-page 20
Preliminary
© 2008 Microchip Technology Inc.