SAB 80C515/80C535
AC inputs during testing are driven at VC C – 0.5 V for a logic '1' and 0.45 V for a logic '0'.
Timing measurements are made at VIH min for a logic '1' and VIL max for a logic '0'.
Data Memory Write Cycle
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs and
begins to float when a 100 mV deviation from the load voltage VO H/V O L occurs. IO L/I O H ≥ ± 20 mA.
Recommended Oscillator Circuits
Semiconductor Group
54