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PIC18F258-E/SOSQTP 数据表(PDF) 100 Page - Microchip Technology |
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PIC18F258-E/SOSQTP 数据表(HTML) 100 Page - Microchip Technology |
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100 / 402 page ![]() PIC18FXX8 DS41159E-page 98 © 2006 Microchip Technology Inc. FIGURE 9-6: RB2/CANTX/INT2 PIN BLOCK DIAGRAM FIGURE 9-7: RB3/CANRX PIN BLOCK DIAGRAM Data Latch TRIS Latch RD TRISB P VSS Q D Q CK Q D Q CK QD EN N VDD 0 1 RD PORTB WR TRISB Data Bus RB2/CANTX/ CANTX ENDRHI OPMODE2:OPMODE0 = 000 Schmitt Trigger RD LATB WR PORTB or WR LATB Note 1: I/O pin has diode protection to VDD and VSS. INT2 pin(1) Data Latch RBPU(2) P VDD Q D CK Q D CK QD EN Data Bus WR LATB or PORTB WR TRISB RD TRISB RD PORTB Weak Pull-up RB3 or CANRX I/O pin(1) TTL Input Buffer Schmitt Trigger Buffer TRIS Latch RD LATB CANCON<7:5> . Note 1: I/O pins have diode protection to VDD and VSS. 2: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>). |
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