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TMS29F040 Datasheet(PDF) 14 Page - Texas Instruments |
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TMS29F040 Datasheet(HTML) 14 Page - Texas Instruments |
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14 / 37 page ![]() TMS29F040 524288 BY 8BIT FLASH MEMORY SMJS820C − APRIL 1996 − 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 ’29F040-60 ’29F040-70 ’29F040-90 UNIT PARAMETER ALTERNATE SYMBOL MIN MAX MIN MAX MIN MAX UNIT tAVQV Access time, address ta(A) 60 70 90 ns tELQV Access time, E ta(E) 60 70 90 ns tGLQV Access time, G ta(G) 30 30 35 ns tAVAV Cycle time, read tc(R) 60 70 90 ns tEHQZ Disable time, E to high impedance tdis(E) 20 20 20 ns tGHQZ Disable time, G to high impedance tdis(G) 20 20 20 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 ’29F040-10 ’29F040-12 UNIT PARAMETER ALTERNATE SYMBOL MIN MAX MIN MAX UNIT tAVQV Access time, address ta(A) 100 120 ns tELQV Access time, E ta(E) 100 120 ns tGLQV Access time, G ta(G) 45 50 ns tAVAV Cycle time, read tc(R) 100 120 ns tEHQZ Disable time, E to high impedance tdis(E) 20 30 ns tGHQZ Disable time, G to high impedance tdis(G) 20 30 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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