I/o ports – Philips P89LPC903 User Manual
Page 43

Philips Semiconductors
User’s Manual - Preliminary -
P89LPC901/902/903
I/O PORTS
2003 Dec 8
43
All ports pins that can function as an output have slew rate controlled outputs to limit noise generated by quickly switching output
signals. The slew rate is factory-set to approximately 10 ns rise and fall times.