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C511_1 Datasheet, PDF (126/128 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller | |||
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Device Specifications
AC Inputs during testing are driven at VCC - 0.5 V for a logic â1â and 0.45 V for a logic â0â.
Timing measurements are made at VIHmin for a logic â1â and VILmax for a logic â0â.
Figure 10-10
AC Testing: Input, Output Waveforms
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 change from the loaded VOH/VOL level occurs.
IOL/IOH ⥠± 20 mA
Figure 10-11
AC Testing: Float Waveforms
Figure 10-12
Recommended Oscillator Circuits for Crystal Oscillator
Semiconductor Group
10-14
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