PIC18F87K90 Datasheet, PDF (22/566 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 (CONTINUED)
Pin Name
Pin Number _{Pin Buffer}
QFN/TQFP ^{Type Type}
Description
VSS
9, 25, 41, 56 P
— Ground reference for logic and I/O pins.
VDD
26, 38, 57 P
— Positive supply for logic and I/O pins.
AVSS
20
P
— Ground reference for analog modules.
AVDD
19
P
— Positive supply for analog modules.
ENVREG
18
I
ST Enable for on-chip voltage regulator.
VDDCORE/VCAP
VDDCORE
VCAP
10
Core logic power or external filter capacitor connection.
P
—
External filter capacitor connection (regulator
enabled/disabled).
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.
TABLE 1-4: PIC18F8XK90 PINOUT I/O DESCRIPTIONS
Pin Name
Pin Number _{Pin Buffer}
TQFP ^{Type Type}
Description
MCLR/RG5
RG5
9
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
49
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
50
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 = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
I = Input
P = Power
I²C™ = I²C/SMBus
CMOS
Analog
O
OD
= CMOS compatible input or output
= Analog input
= Output
= Open-Drain (no P diode to VDD)
Note 1:
2:
3:
4:
Default assignment for ECCP2 when the CCP2MX Configuration bit is set.
Alternate assignment for ECCP2 when the CCP2MX Configuration bit is cleared.
Not available on PIC18F65K90 and PIC18F85K90 devices.
The CCP6, CCP7, CCP8 and CCP9 pin placement depends on the ECCPMX Configuration bit setting.
DS39957B-page 22
Preliminary
 2010 Microchip Technology Inc.