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TMS28F004AEB60CDCDL датащи(PDF) 39 Page - Texas Instruments |
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TMS28F004AEB60CDCDL датащи(HTML) 39 Page - Texas Instruments |
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39 / 80 page ![]() TMS28F004Axy, TMS28F400Axy 524288 BY 8-BIT/262144 BY 16-BIT AUTO-SELECT BOOT-BLOCK FLASH MEMORIES SMJS829A – JANUARY 1996 – REVISED AUGUST 1997 39 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 switching characteristics for TMS28F004AEy and TMS28F400AEy over recommended ranges of supply voltage (commercial and extended temperature ranges) (continued) ALT ’28F004AEy 80 ’28F400AEy 80 PARAMETER ALT. SYMBOL 3-V VCC RANGE 5-V VCC RANGE UNIT MIN MAX MIN MAX ta(A) Access time from A0 – A17 (see Note 15) tAVQV 150 80 ns ta(E) Access time from E tELQV 150 80 ns ta(G) Access time from G tGLQV 90 40 ns tc(R) Cycle time, read tAVAV 150 80 ns td(E) Delay time, E low to low-impedance output tELQX 0 0 ns td(G) Delay time, G low to low-impedance output tGLQX 0 0 ns tdis(E) Disable time, E to high-impedance output tEHQZ 80 30 ns tdis(G) Disable time, G to high-impedance output tGHQZ 60 30 ns th(D) Hold time, DQ valid from A0 – A17, E, or G, whichever occurs first (see Note 15) tAXQX 0 0 ns tsu(EB) Setup time, BYTE from E low tELFL tELFH 5 5 ns td(RP) Output delay time from RP high tPHQV 800 450 ns tdis(BL) Disable time, BYTE low to DQ8 – DQ15 in the high-impedance state tFLQZ 60 30 ns ta(BH) Access time from BYTE going high tFHQV 150 80 ns NOTE 15: A–1 – A17 for byte-wide |
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