Datasheet

PIC18(L)F1XK22
DS41365E-page 94  2009-2011 Microchip Technology Inc.
8.5 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 8-16: SLRCON: SLEW RATE CONTROL REGISTER
U-0 U-0 U-0 U-0 U-0 R/W-1 R/W-1 R/W-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 7-3 Unimplemented: Read as ‘0’
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
(1)
0 = All outputs on PORTA slew at the standard rate
Note 1: The slew rate of RA4 defaults to standard rate when the pin is used as CLKOUT.