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~ National ~ Semiconductor - Al Kossow's Bitsavers

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4.0 Electrical Specifications (Continued)<br />

Latched Write of PC, RIC<br />

Symbol 10# Parameter Formula Min Max Units<br />

tSU-RW-CO 1 RAE, REM-WR Falling before ClK-OUT Rising 14 ns<br />

tH-RW-CO 2 RAE, REM-WR Rising after ClK-OUT Rising 20 ns<br />

tH-RW-X 3 RAE, REM-WR Rising after XACK Rising 0 ns<br />

tSU-CMD-CO 4 CMD Valid before ClK-OUT Falling 0 ns<br />

tH-CMD-CO 5 CMD Invalid after ClK-OUT Falling 35 ns<br />

tpD-RW-X 6 RAE, REM-WR Falling to XACK Falling 40 ns<br />

tZA-LCL-AAD 7 A, AD Disabled before lCl Rising 2 ns<br />

tAZ-LCL-AAD 8 A, AD Enabled before lCl Falling 17 ns<br />

tPD-CO-WPND 9 ClK-OUT Rising to WR-PEND Falling/Rising 10 57 ns<br />

Note 1: <strong>Al</strong>l parameters are individually tested and guaranteed. Interpreting this data by numerically adding two or more parameters to create a new timing<br />

specification may lead to invalid results.<br />

CLK-OUT<br />

Latched Write of PC, RIC<br />

~~~'---I'--<br />

_ CD{~f:.® Qr ~<br />

RAE ~_ ,I:: "L-<br />

0--- t- ~I f-0 - K5)<br />

CMD // I: F/~ 11', ///<br />

CD-{ ~f-®'- Qr 1-:--<br />

REM-WR<br />

of-<br />

~®.:I<br />

XACK -\;<br />

LCL "L- ~<br />

WRITE<br />

AD,A<br />

WR-PEND<br />

I<br />

,-®<br />

_---t 1-0 -I I..-®<br />

®---<br />

f<br />

TLlF/9336-77<br />

2-88

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