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PIC18F258-E/SOSQTP 数据表(PDF) 101 Page - Microchip Technology |
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PIC18F258-E/SOSQTP 数据表(HTML) 101 Page - Microchip Technology |
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101 / 402 page ![]() © 2006 Microchip Technology Inc. DS41159E-page 99 PIC18FXX8 TABLE 9-3: PORTB FUNCTIONS TABLE 9-4: SUMMARY OF REGISTERS ASSOCIATED WITH PORTB Name Bit# Buffer Function RB0/INT0 bit 0 TTL/ST(1) Input/output pin or external interrupt 0 input. Internal software programmable weak pull-up. RB1/INT1 bit 1 TTL/ST(1) Input/output pin or external interrupt 1 input. Internal software programmable weak pull-up. RB2/CANTX/ INT2 bit 2 TTL/ST(1) Input/output pin, CAN bus transmit pin or external interrupt 2 input. Internal software programmable weak pull-up. RB3/CANRX bit 3 TTL Input/output pin or CAN bus receive pin. Internal software programmable weak pull-up. RB4 bit 4 TTL Input/output pin (with interrupt-on-change). Internal software programmable weak pull-up. RB5/PGM bit 5 TTL Input/output pin (with interrupt-on-change). Internal software programmable weak pull-up. Low-voltage serial programming enable. RB6/PGC bit 6 TTL/ST(2) Input/output pin (with interrupt-on-change). Internal software programmable weak pull-up. Serial programming clock. RB7/PGD bit 7 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. Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOR Value on all other Resets PORTB RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 xxxx xxxx uuuu uuuu LATB LATB Data Output Register xxxx xxxx uuuu uuuu TRISB PORTB Data Direction Register 1111 1111 1111 1111 INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 0000 000x 0000 000u INTCON2 RBPU INTEDG0 INTEDG1 — — TMR0IP —RBIP 111- -1-1 111- -1-1 INTCON3 INT2IP INT1IP — INT2IE INT1IE — INT2IF INT1IF 11-0 0-00 11-1 0-00 Legend: x = unknown, u = unchanged. Shaded cells are not used by PORTB. |
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