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TMS27C040 Datasheet(PDF) 7 Page - Texas Instruments |
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TMS27C040 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 12 page TMS27C040 524288 BY 8BIT UV ERASABLE TMS27PC040 524288 BY 8BIT PROGRAMMABLE READONLY MEMORY SMLS040F − NOVEMBER 1990 − REVISED SEPTEMBER 1997 7 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 switching characteristics over recommended ranges of operating conditions (see Notes 3 and 4) PARAMETER TEST CONDITIONS ’27C040-10 ’27 PC040-10 ’27C040-12 ’27 PC040-12 ’27C040-15 ’27 PC040-15 UNIT PARAMETER TEST CONDITIONS MIN MAX MIN MAX MIN MAX UNIT ta(A) Access time from address 100 120 150 ns ta(E) Access time from chip enable CL = 100 pF, 100 120 150 ns ten(G) Output enable time from G CL = 100 pF, 1 Series 74 TTL load, 50 50 50 ns tdis Output disable time from G or E, whichever occurs first 1 Series 74 TTL load, Input tr ≤ 20 ns, Input tf ≤ 20 ns 0 50 0 50 0 50 ns tv(A) Output data valid time after change of address, E, or G, whichever occurs first† Input tf ≤ 20 ns 0 0 0 ns † Value calculated from 0.5-V delta to measured output level. NOTES: 3. For all switching characteristics the input pulse levels are 0.4 V to 2.4 V. Timing measurements are made at 2 V for logic high and 0.8 V for logic low. (See Figure 2) 4. Common test conditions apply for tdis except during programming. switching characteristics for programming: VCC = 6.5 V and VPP = 13 V (SNAP! Pulse), TA = 25°C (see Note 3) PARAMETER MIN MAX UNIT tdis(G) Output disable time from G 0 100 ns ten(G) Output enable time from G 150 ns NOTE 3: For all switching characteristics the input pulse levels are 0.4 V to 2.4 V. Timing measurements are made at 2 V for logic high and 0.8 V for logic low. (See Figure 2) timing requirements for programming MIN NOM MAX UNIT tw(PGM) Pulse duration, program SNAP! Pulse programming algorithm 95 100 105 µs tsu(A) Setup time, address 2 µs tsu(E) Setup time, E 2 µs tsu(G) Setup time, G 2 µs tsu(D) Setup time, data 2 µs tsu(VPP) Setup time, VPP 2 µs tsu(VCC) Setup time, VCC 2 µs th(A) Hold time, address 0 µs th(D) Hold time, data 2 µs |
Similar Part No. - TMS27C040_08 |
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Similar Description - TMS27C040_08 |
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