
2010-2012 Microchip Technology Inc.
DS39977F-page 21
PIC18F66K80 FAMILY
RB4/AN9/C2INA/ECCP1/
P1A/CTPLS/KBI0
22
25
RB4
I/O
ST/
CMOS
Digital I/O.
AN9
I
Analog Analog Input 9.
C2INA
I
Analog Comparator 2 Input A.
ECCP1
I/O
ST
Capture 1 input/Compare 1 output/PWM1 output.
P1A
O
CMOS Enhanced PWM1 Output A.
CTPLS
O
ST
CTMU pulse generator output.
KBI0
I
ST
Interrupt-on-change pin.
RB5/T0CKI/T3CKI/CCP5/
KBI1
23
26
RB5
I/O
ST/
CMOS
Digital I/O.
T0CKI
I
ST
Timer0 external clock input.
T3CKI
I
ST
Timer3 external clock input.
CCP5
I/O
ST/
CMOS
Capture 5 input/Compare 5 output/PWM5 output.
KBI1
I
ST
Interrupt-on-change pin.
RB6/PGC/TX2/CK2/KBI2
24
27
RB6
I/O
ST/
CMOS
Digital I/O.
PGC
I
ST
In-Circuit Debugger and ICSP programming clock input
pin.
TX2
O
CMOS EUSART asynchronous transmit.
CK2
I/O
ST
EUSART synchronous clock. (See related RX2/DT2.)
KBI2
I
ST
Interrupt-on-change pin.
RB7/PGD/T3G/RX2/DT2/
KBI3
25
28
RB7
I/O
ST/
CMOS
Digital I/O.
PGD
I/O
ST
In-Circuit Debugger and ICSP programming data pin.
T3G
I
ST
Timer3 external clock gate input.
RX2
I
ST
EUSART asynchronous receive.
DT2
I/O
ST
EUSART synchronous data. (See related TX2/CK2.)
KBI3
I
ST
Interrupt-on-change pin.
TABLE 1-4:
PIC18F2XK80 I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
Description
QFN
SSOP/
SPDIP
/SOIC
Legend:
CMOS = CMOS compatible input or output
I2C
= I2C/SMBus input buffer
ST
= Schmitt Trigger input with CMOS levels
Analog = Analog input
I
= Input
O
= Output
P= Power