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PIC18F4539-E/MLSQTP Datasheet(PDF) 14 Page - Microchip Technology |
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PIC18F4539-E/MLSQTP Datasheet(HTML) 14 Page - Microchip Technology |
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14 / 322 page ![]() PIC18FXX39 DS30485A-page 12 Preliminary 2002 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 21 21 I/O I TTL ST Digital I/O. External interrupt 0. RB1/INT1 RB1 INT1 22 22 I/O I TTL ST Digital I/O. External interrupt 1. RB2/INT2 RB2 INT2 23 23 I/O I TTL ST Digital I/O. External interrupt 2. RB3 24 24 I/O TTL Digital I/O. RB4 25 25 I/O TTL Digital I/O. Interrupt-on-change pin. RB5/PGM RB5 PGM 26 26 I/O I/O TTL ST Digital I/O. Interrupt-on-change pin. Low Voltage ICSP programming enable pin. RB6/PGC RB6 PGC 27 27 I/O I/O TTL ST Digital I/O. Interrupt-on-change pin. In-Circuit Debugger and ICSP programming clock pin. RB7/PGD RB7 PGD 28 28 I/O I/O TTL ST Digital I/O. Interrupt-on-change pin. In-Circuit Debugger and ICSP programming data pin. TABLE 1-2: PIC18F2X39 PINOUT I/O DESCRIPTIONS (CONTINUED) Pin Name Pin Number Pin Type Buffer Type Description DIP SOIC Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input O = Output P = Power OD = Open Drain (no P diode to VDD) |
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