PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 99

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 9-3:
TABLE 9-4:
 2002 Microchip Technology Inc.
RB0/INT0
RB1/INT1
RB2/INT2/
CANTX
RB3/CANRX
RB4
RB5/PGM
RB6/PGC
RB7/PGD
Legend: TTL = TTL input, ST = Schmitt Trigger input
Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.
PORTB
LATB
TRISB
INTCON
INTCON2
INTCON3
Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB.
Name
Name
2: This buffer is a Schmitt Trigger input when used in Serial Programming mode.
LATB Data Output Register
PORTB Data Direction Register
GIE/GIEH PEIE/GIEL TMR0IE
INT2IP
RBPU
Bit 7
RB7
PORTB FUNCTIONS
Bit#
SUMMARY OF REGISTERS ASSOCIATED WITH PORTB
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
INTEDG0 INTEDG1 INTEDG2
INT1IP
Bit 6
RB6
TTL/ST
TTL/ST
TTL/ST
TTL/ST
TTL/ST
Buffer
TTL
TTL
TTL
(1)
(1)
(1)
(2)
(2)
Bit 5
RB5
—
Input/output pin or external interrupt 0 input.
Internal software programmable weak pull-up.
Input/output pin or external interrupt 1 input.
Internal software programmable weak pull-up.
Input/output pin, external interrupt 2 input or CAN bus transmit pin.
Internal software programmable weak pull-up.
Input/output pin or CAN bus receive pin.
Internal software programmable weak pull-up.
Input/output pin (with interrupt-on-change).
Internal software programmable weak pull-up.
Input/output pin (with interrupt-on-change). Internal software programmable
weak pull-up. Low voltage serial programming enable.
Input/output pin (with interrupt-on-change). Internal software programmable
weak pull-up. Serial programming clock.
Input/output pin (with interrupt-on-change). Internal software programmable
weak pull-up. Serial programming data.
INT0IE
INT2IE
Bit 4
RB4
Preliminary
INT1IE
RBIE
Bit 3
RB3
—
TMR0IF
TMR0IP
Bit 2
RB2
—
Function
INT0IF
INT2IF
Bit 1
RB1
—
INT1IF
RBIF
RBIP
Bit 0
RB0
PIC18FXX8
xxxx xxxx
xxxx xxxx
1111 1111
0000 000x
1111 -1-1
11-0 0-00
POR, BOR
Value on
DS41159B-page 97
uuuu uuuu
uuuu uuuu
1111 1111
0000 000u
1111 -1-1
11-0 0-00
Value on
RESETS
all other