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~ National ~ Semiconductor - Al Kossow's Bitsavers

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4.0 Electrical Specifications (Continued)<br />

Interrupt Timing<br />

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

tW·NMI 1 NMI low Tx 2 ns<br />

tpD.IClK.BQ 2 iClK Rising to BiRQ (Output) Rising/Falling 31 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 />

T2<br />

(a) Interrupt Timing<br />

I<br />

I<br />

(of NOP inst)<br />

I<br />

ClK-OUT ~ \ I \ I<br />

IClK~ I<br />

'--<br />

NMI t=0<br />

BIRO<br />

\ I<br />

(input)<br />

*<br />

T1<br />

IA<br />

Next Instruction Address<br />

Interrupt Vector<br />

Address<br />

TL/F 19336-60<br />

(b) BIRQ Output Timing<br />

T2 T1 T1<br />

ClK-OUT<br />

\ I ~~<br />

IClK<br />

BIRO<br />

(output)<br />

\I<br />

r<br />

J r<br />

~~<br />

TL/F/9336-61<br />

2·74

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