PIC18F47J53 Datasheet, PDF (16/586 Pages) Microchip Technology – 28/44-Pin, High-Performance USB Microcontrollers with nanoWatt XLP Technology

PIC18F47J53 FAMILY
TABLE 1-3: PIC18F2XJ53 PINOUT I/O DESCRIPTIONS
Pin Number
Pin Name
28-SPDIP/
Pin Buffer
SSOP/ 28-QFN ^{Type Type}
SOIC
Description
MCLR
1⁽²⁾
26⁽²⁾
I
ST Master Clear (Reset) input. This pin is an
active-low Reset to the device.
OSC1/CLKI/RA7
OSC1
CLKI
RA7⁽¹⁾
9
6
Oscillator crystal or external clock input.
I
ST
Oscillator crystal input or external clock source
input. ST buffer when configured in RC mode;
CMOS otherwise. Main oscillator input
connection.
I CMOS External clock source input; always associated
with pin function OSC1 (see related OSC1/CLKI
pins).
I/O TTL/DIG Digital I/O.
OSC2/CLKO/RA6
OSC2
CLKO
RA6⁽¹⁾
10
7
Oscillator crystal or clock output.
O
— Oscillator crystal output. Connects to crystal or
resonator in Crystal Oscillator mode.
O DIG
Main oscillator feedback output connection.
In RC mode, OSC2 pin outputs CLKO, which
has 1/4 the frequency of OSC1 and denotes
the instruction cycle rate.
I/O TTL/DIG Digital I/O.
Legend:
Note 1:
2:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
I = Input
Analog = Analog input
O
= Output
P = Power
DIG = Digital output
OD
= Open-Drain (no P diode to VDD)
I²C™ = Open-Drain, I²C specific
RA7 and RA6 will be disabled if OSC1 and OSC2 are used for the clock function.
5.5V tolerant.
DS39964B-page 16
Preliminary
 2010 Microchip Technology Inc.