
SAB 80C515/80C535
Semiconductor Group
54
Data Memory Write Cycle
Recommended Oscillator Circuits
AC inputs during testing are driven at
V
C C
– 0.5 V for a logic '1' and 0.45 V for a logic '0'.
Timing measurements are made at
V
I H min
for a logic '1' and
V
I L max
for a logic '0'.
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
V
O H
/
V
O L
occurs.
I
O L
/
I
O H
≥ ±
20 mA.