GMS90C3X Datasheet, PDF (48/59 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS90 Series
VCC−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_LOAD
V_LOAD + 0.1
V_LOAD − 0.1
Timing Reference Points
0.2V_CC − 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_CC−0.5V
0.45V
0.7 V_CC
0.2 V_CC −0.1
t_CLCL
t_CHCX
t_CLCX
t_CHCL
t_CLCH
Figure 9. External Clock Cycle
44
Oct. 2000 Ver 3.1a