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TS80C58X2 Datasheet(PDF) 56 Page - ATMEL Corporation

Part # TS80C58X2
Description  Programmable Clock Out and Up/Down Timer/Counter 2
PDF  62 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TS80C58X2 Datasheet(HTML) 56 Page - ATMEL Corporation

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4431E–8051–04/06
AT/TS8xC54/8X2
19.5.13
AC Testing Input/Output Waveforms
Figure 19-12. AC Testing Input/Output Waveforms
AC inputs during testing are driven at VCC - 0.5 for a logic “1” and 0.45V for a logic “0”. Timing
measurement are made at VIH min for a logic “1” and VIL max for a logic “0”.
19.5.14
Float Waveforms
Figure 19-13. Float 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
≥ ± 20mA.
19.5.15
Clock Waveforms
Valid in normal clock mode. In X2 mode XTAL2 signal must be changed to XTAL2 divided by
two.
0.45 V
VCC-0.5 V
0.2VCC+0.9
0.2VCC-0.1
INPUT/OUTPUT
VOL+0.1 V
VOH-0.1 V
FLOAT
VLOAD
VLOAD+0.1 V
VLOAD-0.1 V



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