Real Time Devices AD1200 User Manual page 106

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82C54
CLOCK AND GATE
z'3',t24-17
' Last byt€ ol count
b€ing wdtten
A.C. TESTING INPUT, OUTPUT WAVEFORM
A.C. TESTING LOAD CIRCUIT
INPUT/OUTPUT
2'3124/-18
A.C. Testing: InprrtB are d.iven et 2.4V lq a loglc ,,i " and O,4SV
for.a logic "0." Timing m€asurem€nle are made at 2,0V tor a loglc
"1" and 0.8V tor a logic .,0."
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23124-15
Cs - 150 pF
C1 Includee llg capacitance
3-99