PIC18F2331 MICROCHIP [Microchip Technology], PIC18F2331 Datasheet - Page 17

• Manufacturer Part Number: PIC18F2331
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 1-3:
 2003 Microchip Technology Inc.
MCLR/V
OSC1/CLKI/RA7
OSC2/CLKO/RA6
RA0/AN0
RA1/AN1
RA2/AN2/V
INDX
RA3/AN3/V
CAP2/QEA
RA4/AN4/CAP3/QEB
RA5/AN5/LVDIN
Legend: TTL
MCLR
V
RE3
OSC1
CLKI
RA7
OSC2
CLKO
RA6
RA0
AN0
RA1
AN1
RA2
AN2
V
CAP1
INDX
RA3
AN3
V
CAP2
QEA
RA4
AN4
CAP3
QEB
RA5
AN5
LVDIN
REF
REF
PP
Pin Name
PP
-
+
ST
O
OD
/RE3
REF
REF
-/CAP1/
+/
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Output
= Open-Drain (no diode to V
PIC18F4331/4431 PINOUT I/O DESCRIPTIONS
DIP
13
14
1
2
3
4
5
6
7
Pin Number
TQFP QFN
18
30
31
19
20
21
22
23
24
18
32
33
19
20
21
22
23
24
PIC18F2331/2431/4331/4431
Type
Pin
DD
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
P
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
)
Preliminary
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Buffer
CMOS
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
ST
ST
ST
ST
ST
ST
ST
—
—
Master Clear (input) or programming voltage (input).
Oscillator crystal or external clock input.
Oscillator crystal or clock output.
PORTA is a bidirectional I/O port.
Master Clear (Reset) input. This pin is an active-low.
Reset to the device.
Programming voltage input.
Digital input. Available only when MCLR is disabled.
Oscillator crystal input or external clock source input.
ST buffer when configured in RC mode, CMOS otherwise.
External clock source input. Always associated with pin
function OSC1. (See related OSC1/CLKI, OSC2/CLKO pins.)
General purpose I/O pin.
Oscillator crystal output. Connects to crystal or resonator
in Crystal Oscillator mode.
In RC mode, OSC2 pin outputs CLKO, which has 1/4 the
frequency of OSC1 and denotes the instruction cycle rate.
General purpose I/O pin.
Digital I/O.
Analog input 0.
Digital I/O.
Analog input 1.
Digital I/O.
Analog input 2.
A/D Reference Voltage (Low) input.
Input capture pin 1.
Quadrature Encoder Interface index input pin.
Digital I/O.
Analog input 3.
A/D Reference Voltage (High) input.
Input capture pin 2.
Quadrature Encoder Interface channel A input pin.
Digital I/O.
Analog input 4.
Input capture pin 3.
Quadrature Encoder Interface channel B input pin.
Digital I/O.
Analog input 5.
Low-voltage Detect input.
CMOS = CMOS compatible input or output
I
P
= Input
= Power
Description
DS39616B-page 15