PIC18F87K90 Datasheet, PDF (14/566 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC18F87K90 FAMILY
TABLE 1-3: PIC18F6XK90 PINOUT I/O DESCRIPTIONS
Pin Name
Pin Number _{Pin Buffer}
QFN/TQFP ^{Type Type}
Description
MCLR/RG5
MCLR
RG5
7
I
ST Master Clear (input) or programming voltage (input).
This pin is an active-low Reset to the device.
I
ST
General purpose, input only pin.
OSC1/CLKI/RA7
OSC1
CLKI
RA7
39
Oscillator crystal or external clock input.
I CMOS Oscillator crystal input.
I CMOS External clock source input. Always associated
with pin function, OSC1. (See related OSC1/CLKI,
OSC2/CLKO pins.)
I/O TTL
General purpose I/O pin.
OSC2/CLKO/RA6
OSC2
CLKO
RA6
40
Oscillator crystal or clock output.
O
—
Oscillator crystal output. Connects to crystal or
resonator in Crystal Oscillator mode.
O
—
In certain oscillator modes, OSC2 pin outputs CLKO,
which has 1/4 the frequency of OSC1 and denotes the
instruction cycle rate.
I/O TTL
General purpose I/O pin.
Legend:
TTL
ST
I
P
I²C™
= TTL compatible input
= Schmitt Trigger input with CMOS levels
= Input
= Power
= I²C/SMBus
CMOS = CMOS compatible input or output
Analog = Analog input
O
= Output
OD = Open-Drain (no P diode to VDD)
Note 1: Default assignment for ECCP2 when the CCP2MX Configuration bit is set.
2: Alternate assignment for ECCP2 when the CCP2MX Configuration bit is cleared.
3: Not available on PIC18F65K90 and PIC18F85K90 devices.
DS39957B-page 14
Preliminary
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