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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMS29LF040 датащи(PDF) 14 Page - Texas Instruments |
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TMS29LF040 датащи(HTML) 14 Page - Texas Instruments |
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14 / 38 page  TMS29LF040, TMS29VF040 524288 BY 8-BIT FLASH MEMORIES SMJS825D – SEPTEMBER 1995 – REVISED JUNE 1998 14 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 switching characteristics over recommended ranges of supply voltage and ambient temperature, read-only operation† (see Figure 2, Figure 11, Figure 13, Figure 15, and Figure 17) PARAMETER ALTERNATE SYMBOL ’29LF040-80 ’29LF040-90 ’29LF040-10 ’29VF040-10 UNIT SYMBOL MIN MAX MIN MAX MIN MAX tAVQV Access time, address ta(A) 80 90 100 ns tELQV Access time, E ta(E) 80 90 100 ns tGLQV Access time, G ta(G) 35 40 45 ns tAVAV Cycle time, read tc(R) 80 90 100 ns tEHQZ Disable time, E to high impedance tdis(E) 20 20 30 ns tGHQZ Disable time, G to high impedance tdis(G) 20 20 30 ns tAXQX Hold time, output from address, E or G change th(D) 0 0 0 ns tWHGL1 Hold time, G read 0 0 0 ns tWHGL2 Hold time, G toggle and data polling 10 10 10 ns PARAMETER ALTERNATE SYMBOL ’29LF040-12 ’29VF040-12 ’29LF040-15 ’29VF040-15 UNIT SYMBOL MIN MAX MIN MAX tAVQV Access time, address ta(A) 120 150 ns tELQV Access time, E ta(E) 120 150 ns tGLQV Access time, G ta(G) 50 55 ns tAVAV Cycle time, read tc(R) 120 150 ns tEHQZ Disable time, E to high impedance tdis(E) 30 35 ns tGHQZ Disable time, G to high impedance tdis(G) 30 35 ns tAXQX Hold time, output from address, E or G change th(D) 0 0 ns tWHGL1 Hold time, G read 0 0 ns tWHGL2 Hold time, G toggle and data polling 10 10 ns † See Figure 1 for ac test output load circuit and voltage waveforms. |
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