GMS90X5XC Series | HYUNDAI MicroElectronics |
VCC−0.5V 
0.2VCC + 0.9
Test Points
0.2VCC − 0.1
0.45V
AC Inputs during testing are driven at VCC−0.5V for a logic ‘1’ and 0.45V for a logic ‘0’. Timing measurements are made a VIHmin for a logic ‘1’ and VILmax for a logic ‘0’.
Figure 9. AC Testing: Input, Output Waveforms
| VLOAD + 0.1 |
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| VOH − 0.1 | |
VLOAD |
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| Timing Reference Points |
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| VLOAD − 0.1 |
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| 0.2VCC − 0.1 |
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| VOL + 0.1 | |
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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 VOH / VOL level occurs.
IOL / IOH ≥ 20mA.
Figure 10. Float Waveforms
VCC−0.5V
0.7 VCC
0.2 VCC −0.1
0.45V
tCLCL
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tCHCLtCLCH
Figure 11. External Clock Cycle
Jan. 2001 Ver 1.0 | 41 |
