
PIC18CXX8
DS30475A-page 14
Advanced Information
2000 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/INT3
RB3
INT3
45
57
55
69
I/O
TTL
ST
Digital I/O
External interrupt 3
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
54
52
66
I/O
I
TTL
ST
Digital I/O
Interrupt-on-change pin
ICSP programming clock
RB7
37
48
47
60
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
PIC18C658
PIC18C858
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)