GMS90C320 Datasheet, PDF (42/46 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS90C320
V_{C C} −0.5V
0.45V
0.2V_CC + 0.9
Test Points
0.2V_CC − 0.1
AC Inputs during testing are driven at V_CC−0.5V for a logic ‘1’ and 0.45V for a logic ‘0’.
Timing measurements are made a V_IHmin for a logic ‘1’ and V_ILmax for a logic ‘0’.
Figure 7 AC Testing: Input, Output Waveforms
V_{LO AD}
V_LOAD + 0.1
V_LOAD − 0.1
Timing Reference Points
0.2VCC − 0.1
V_OH − 0.1
V_OL + 0.1
For timing purposes a port pin is no longer floating when a 100mV change from load voltage
occurs and begins to float when a 100mV change from the loaded V_OH / V_OL level occurs.
I_OL / I_OH ≥ 20mA.
Figure 8 Float Waveforms
V_{C C} −0.5V
0.45V
0.7 VCC
0.2 V_CC −0.1
t_{C H C L}
t_{CLC X}
tC L C L
tC L C H
t_{C H C X}
Figure 9 External Clock Cycle
38
OCT. 2000 Ver 1.2