PIC18CXX2_13 Datasheet, PDF(82/304 Page) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

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PIC18CXX2_13 Datasheet, PDF (82/304 Pages) Microchip Technology – High Performance Microcontrollers with 10-bit A/D

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PIC18CXX2

TABLE 8-3: PORTB FUNCTIONS

Name

Bit#

Buffer

Function

RB0/INT0

bit0

RB1/INT1

bit1

RB2/INT2

bit2

RB3/CCP2(3) bit3

TTL/ST(1)

TTL/ST(1)

TTL/ST(1)

TTL/ST(4)

Input/output pin or external interrupt input1. Internal software

programmable weak pull-up.

Input/output pin or external interrupt input2. Internal software

programmable weak pull-up.

Input/output pin or external interrupt input3. Internal software

programmable weak pull-up.

Input/output pin. Capture2 input/Compare2 output/PWM output when

CCP2MX configuration bit is enabled. Internal software

programmable weak pull-up.

RB4

bit4

TTL

Input/output pin (with interrupt-on-change). Internal software

programmable weak pull-up.

RB5

bit5

TTL

Input/output pin (with interrupt-on-change). Internal software

programmable weak pull-up.

RB6

bit6 TTL/ST(2) Input/output pin (with interrupt-on-change). Internal software

programmable weak pull-up. Serial programming clock.

RB7

bit7 TTL/ST(2) Input/output pin (with interrupt-on-change). Internal software

programmable weak pull-up. Serial programming data.

Legend: TTL = TTL input, ST = Schmitt Trigger input

Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt.

2: This buffer is a Schmitt Trigger input when used in Serial Programming mode.

3: A device configuration bit selects which I/O pin the CCP2 pin is multiplexed on.

4: This buffer is a Schmitt Trigger input when configured as the CCP2 input.

TABLE 8-4: SUMMARY OF REGISTERS ASSOCIATED WITH PORTB

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3 Bit 2 Bit 1

PORTB

RB7

RB6

RB5

RB4

RB3

RB2

RB1

LATB

LATB Data Output Register

TRISB

PORTB Data Direction Register

INTCON

GIE/

GIEH

PEIE/

GIEL

TMR0IE INT0IE RBIE TMR0IF INT0IF

INTCON2 RBPU INTEDG0 INTEDG1 INTEDG2 â TMR0IP â

INTCON3 INT2IP INT1IP

â

INT2IE INT1IE

â

INT2IF

Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB.

Bit 0

RB0

RBIF

RBIP

INT1IF

Value on

POR,

BOR

xxxx xxxx

1111 1111

0000 000x

1111 -1-1

11-0 0-00

Value on all

other

RESETS

uuuu uuuu

1111 1111

0000 000u

1111 -1-1

11-0 0-00

DS39026D-page 82

ï£ 1999-2013 Microchip Technology Inc.

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