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PIC16F913-I/SS 数据表(PDF) 56 Page - Microchip Technology |
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PIC16F913-I/SS 数据表(HTML) 56 Page - Microchip Technology |
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56 / 330 page ![]() PIC16F913/914/916/917/946 DS41250F-page 54 © 2007 Microchip Technology Inc. REGISTER 3-4: PORTB: PORTB REGISTER R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 RB<7:0>: PORTB I/O Pin bits 1 = Port pin is >VIH min. 0 = Port pin is <VIL max. REGISTER 3-5: TRISB: PORTB TRI-STATE REGISTER R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-0 TRISB<7:0>: PORTB Tri-State Control bits 1 = PORTB pin configured as an input (tri-stated) 0 = PORTB pin configured as an output REGISTER 3-6: IOCB: PORTB INTERRUPT-ON-CHANGE REGISTER R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 U-0 IOCB7 IOCB6 IOCB5 IOCB4 — — — — bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-4 IOCB<7:4>: Interrupt-on-Change bits 1 = Interrupt-on-change enabled 0 = Interrupt-on-change disabled bit 3-0 Unimplemented: Read as ‘0’ |
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