
PIC18C601/801
DS39541A-page 14
Advance Information
2001 Microchip Technology Inc.
PORTB is a bi-directional I/O port. PORTB
can be software programmed for internal
weak pull-ups on all inputs.
RB0/INT0
RB0
INT0
48
60
58
72
I/O
I
TTL
ST
Digital I/O.
External interrupt 0.
RB1/INT1
RB1
INT1
47
59
57
71
I/O
I
TTL
ST
Digital I/O.
External interrupt 1.
RB2/INT2
RB2
INT2
46
58
56
70
I/O
I
TTL
ST
Digital I/O.
External interrupt 2.
RB3/CCP2
RB3
CCP2
45
57
55
69
I/O
TTL
ST
Digital I/O.
Capture2 input, Compare2 output,
PWM2 output.
RB4
44
56
54
68
I/O
TTL
Digital I/O, Interrupt-on-change pin.
RB5
43
55
53
67
I/O
TTL
Digital I/O, Interrupt-on-change pin.
RB6
42
545266
I/O
I
TTL
ST
Digital I/O, Interrupt-on-change pin.
ICSP programming clock.
RB7
37
484760
I/O
TTL
ST
Digital I/O, Interrupt-on-change pin.
ICSP programming data.
TABLE 1-2:
PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
Type
Buffer
Type
PIC18C601
PIC18C801
TQFP
PLCC
TQFP
PLCC
Description
Legend:
TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
Analog = Analog input
I
= Input
O
= Output
P
= Power
OD
= Open Drain (no P diode to VDD)