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EG87C196MH Datasheet(PDF) 11 Page - Intel Corporation |
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EG87C196MH Datasheet(HTML) 11 Page - Intel Corporation |
11 / 22 page 8XC196MC EXPLANATION OF AC SYMBOLS Each symbol is two pairs of letters prefixed by ‘‘T’’ for time The characters in a pair indicate a signal and its condition respectively Symbols represent the time between the two signalcondition points Conditions Signals H High L Low V Valid X No Longer Valid Z Floating A Address B BHE C CLKOUT D DATA G Buswidth H HOLD HA HLDA L ALEADV BR BREQ R RD W WR WRH WRL X XTAL1 Y READY Q Data Out AC ELECTRICAL CHARACTERISTICS (Over Specified Operating Conditions) Test Conditions Capacitive load on all pins e 100 pF Rise and fall times e 10 ns FOSC e 16 MHz The system must meet the following specifications to work with the 87C196MC Symbol Parameter Min Max Units Notes FXTAL Frequency on XTAL1 8 16 MHz 3 TOSC 1FXTAL 625 125 ns TAVYV Address Valid to READY Setup 2 TOSC b 75 ns TLLYV ALE Low to READY Setup TOSC b 70 ns 4 TYLYH Not READY Time No Upper Limit ns TCLYX READY Hold after CLKOUT Low 0 TOSC b 30 ns 1 TLLYX READY Hold after ALE Low TOSC b 15 2 TOSC b 40 ns 1 TAVGV Address Valid to BUSWIDTH Setup 2 TOSC b 75 ns TLLGV ALE Low to BUSWIDTH Setup TOSC b 60 ns 4 TCLGX Buswidth Hold after CLKOUT Low 0 ns TAVDV Address Valid to Input Data Valid 3 TOSC b 55 ns 2 TRLDV RD Active to Input Data Valid TOSC b 22 ns 2 TCLDV CLKOUT Low to Input Data Valid TOSC b 50 ns TRHDZ End of RD to Input Data Float TOSC ns TRXDX Data Hold after RD Inactive 0 ns NOTES 1 If Max is exceeded additional wait states will occur 2 If wait states are used add 2 TOSC N where N e number of wait states 3 Testing performed at 8 MHz However the device is static by design and will typically operate below 1 Hz 4 These timings are included for compatibility with older b90 and BH products They should not be used for newer high- speed designs 11 |
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