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PIC18F258-E/SOSQTP 数据表(PDF) 14 Page - Microchip Technology |
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PIC18F258-E/SOSQTP 数据表(HTML) 14 Page - Microchip Technology |
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14 / 402 page ![]() PIC18FXX8 DS41159E-page 12 © 2006 Microchip Technology Inc. PORTB is a bidirectional I/O port. PORTB can be software programmed for internal weak pull-ups on all inputs. RB0/INT0 RB0 INT0 21 33 8 36 I/O I TTL ST Digital I/O. External interrupt 0. RB1/INT1 RB1 INT1 22 34 9 37 I/O I TTL ST Digital I/O. External interrupt 1. RB2/CANTX/INT2 RB2 CANTX INT2 23 35 10 38 I/O O I TTL TTL ST Digital I/O. Transmit signal for CAN bus. External interrupt 2. RB3/CANRX RB3 CANRX 24 36 11 39 I/O I TTL TTL Digital I/O. Receive signal for CAN bus. RB4 25 371441 I/O TTL Digital I/O. Interrupt-on-change pin. RB5/PGM RB5 PGM 26 38 15 42 I/O I TTL ST Digital I/O. Interrupt-on-change pin. Low-voltage ICSP™ programming enable. RB6/PGC RB6 PGC 27 39 16 43 I/O I TTL ST Digital I/O. In-Circuit Debugger pin. Interrupt-on-change pin. ICSP programming clock. RB7/PGD RB7 PGD 28 40 17 44 I/O I/O TTL ST Digital I/O. In-Circuit Debugger pin. Interrupt-on-change pin. ICSP programming data. TABLE 1-2: PIC18FXX8 PINOUT I/O DESCRIPTIONS (CONTINUED) Pin Name Pin Number Pin Type Buffer Type Description PIC18F248/258 PIC18F448/458 SPDIP, SOIC PDIP TQFP PLCC 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) |
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