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PIC16LC554 数据表(PDF) 26 Page - Microchip Technology |
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PIC16LC554 数据表(HTML) 26 Page - Microchip Technology |
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26 / 96 page  PIC16C55X(A) DS40143B-page 26 Preliminary © 1997 Microchip Technology Inc. TABLE 5-3: PORTB FUNCTIONS TABLE 5-4: SUMMARY OF REGISTERS ASSOCIATED WITH PORTB Name Bit # Buffer Type Function RB0/INT bit0 TTL/ST(1) Input/output or external interrupt input. Internal software programmable weak pull-up. RB1 bit1 TTL Input/output pin. Internal software programmable weak pull-up. RB2 bit2 TTL Input/output pin. Internal software programmable weak pull-up. RB3 bit3 TTL Input/output pin. 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 pin. RB7 bit7 TTL/ST(2) Input/output pin (with interrupt on change). Internal software programmable weak pull-up. Serial programming data pin. Legend: ST = Schmitt Trigger, TTL = TTL input Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt. Note 2: This buffer is a Schmitt Trigger input when used in serial programming mode. Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR Value on All Other Rests 06h PORTB RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 uuuu uuuu xxxx xxxx 86h TRISB TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 1111 1111 1111 1111 81h OPTION RBPU INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111 Note: Shaded bits are not used by PORTB. |
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