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TMS28F200AST Datasheet(PDF) 27 Page - Texas Instruments |
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TMS28F200AST Datasheet(HTML) 27 Page - Texas Instruments |
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27 / 79 page ![]() switching characteristics for TMS28F002ASy and TMS28F200ASy over recommended ranges of supply voltage (commercial and extended temperature ranges) (see Table 9 and Figure 7) read operations ALT ’28F002ASy 60 ’28F200ASy 60 ’28F002ASy 70 ’28F200ASy 70 ’28F002ASy 80 ’28F200ASy 80 PARAMETER ALT. SYMBOL 3.3-V VCC RANGE 5-V VCC RANGE 3.3-V VCC RANGE 5-V VCC RANGE 3.3-V VCC RANGE 5-V VCC RANGE UNIT MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX ta(A) Access time from A0 – A16 (see Note 15) tAVQV 110 60 130 70 150 80 ns ta(E) Access time from E tELQV 110 60 130 70 150 80 ns ta(G) Access time from G tGLQV 65 35 80 40 90 40 ns tc(R) Cycle time, read tAVAV 110 60 130 70 150 80 ns td(E) Delay time, E low to low-impedance output tELQX 0 0 0 0 0 0 ns td(G) Delay time, G low to low-impedance output tGLQX 0 0 0 0 0 0 ns tdis(E) Disable time, E to high-impedance output tEHQZ 55 25 70 30 80 30 ns tdis(G) Disable time, G to high-impedance output tGHQZ 45 25 55 30 60 30 ns th(D) Hold time, DQ valid from A0 – A16, E, or G, whichever occurs first (see Note 15) tAXQX 0 0 0 0 0 0 ns tsu(EB) Setup time, BYTE from E low tELFL tELFH 5 5 5 5 5 5 ns td(RP) Delay time, RP high to output tPHQV 800 450 800 450 800 450 ns tdis(BL) Disable time, BYTE low to DQ8 – DQ15 in high-impedance state tFLQZ 45 25 55 30 60 30 ns ta(BH) Access time from BYTE going high tFHQV 110 60 130 70 150 80 ns NOTE 15: A–1 – A16 for byte-wide |
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