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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC18F23K20-E/SOSQTP датащи(PDF) 136 Page - Microchip Technology |
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PIC18F23K20-E/SOSQTP датащи(HTML) 136 Page - Microchip Technology |
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136 / 420 page  PIC18F2XK20/4XK20 DS41303B-page 134 Advance Information © 2007 Microchip Technology Inc. 10.8 Port Slew Rate Control The output slew rate of each port is programmable to select either the standard transition rate or a reduced transition rate of 0.1 times the standard to minimize EMI. The reduced transition time is the default slew rate for all ports. REGISTER 10-4: SLRCON: SLEW RATE CONTROL REGISTER U-0 U-0 U-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 — — —SLRE(1) SLRD(1) SLRC SLRB SLRA 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 7-5 Unimplemented: Read as ‘0’ bit 4 SLRE: PORTE Slew Rate Control bit(1) 1 = All outputs on PORTE slew at 0.1 times the standard rate 0 = All outputs on PORTE slew at the standard rate bit 3 SLRD: PORTD Slew Rate Control bit(1) 1 = All outputs on PORTD slew at 0.1 times the standard rate 0 = All outputs on PORTD slew at the standard rate bit 2 SLRC: PORTC Slew Rate Control bit 1 = All outputs on PORTC slew at 0.1 times the standard rate 0 = All outputs on PORTC slew at the standard rate bit 1 SLRB: PORTB Slew Rate Control bit 1 = All outputs on PORTB slew at 0.1 times the standard rate 0 = All outputs on PORTB slew at the standard rate bit 0 SLRA: PORTA Slew Rate Control bit 1 = All outputs on PORTA slew at 0.1 times the standard rate(2) 0 = All outputs on PORTA slew at the standard rate Note 1: These bits are not implemented on PIC18F2XK20 devices. 2: The slew rate of RA6 defaults to standard rate when the pin is used as CLKOUT. |
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