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AS7C251MNTF18A-75TQI Datasheet(PDF) 9 Page - Alliance Semiconductor Corporation |
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AS7C251MNTF18A-75TQI Datasheet(HTML) 9 Page - Alliance Semiconductor Corporation |
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9 / 18 page  ® AS7C251MNTF18A 12/23/04, v 1.1 Alliance Semiconductor P. 9 of 18 Timing characteristics over operating range Snooze Mode Electrical Characteristics Parameter Sym -75 -85 -10 Unit Notes1 1 See “Notes:” on page 15. Min Max Min Max Min Max Cycle time tCYC 8.5 – 10 – 12 – ns Clock access time tCD –7.5 –8.5 – 10 ns Output enable low to data valid tOE –3.5 –4.0–4.0 ns Clock high to output low Z tLZC 2.5 – 2.5 – 2.5 – ns 2,3,4 Data Output invalid from clock high tOH 3.0 – 3.0 – 3.0 – ns 2 Output enable low to output low Z tLZOE 0–0 –0– ns 2,3,4 Output enable high to output high Z tHZOE –3.5 –4.0–4.0 ns 2,3,4 Clock high to output high Z tHZC –3.5 –4.0–4.0 ns 2,3,4 Output enable high to invalid output tOHOE 0–0 –0– ns Clock high pulse width tCH 2.5 – 3.0 – 4.0 – ns 5 Clock low pulse width tCL 2.5 – 3.0 – 4.0 – ns 5 Address and Control setup to clock high tAS 2.0 – 2.0 – 2.0 – ns 6 Data setup to clock high tDS 2.0 – 2.0 – 2.0 – ns 6 Write setup to clock high tWS 2.0 – 2.0 – 2.0 – ns 6, 7 Chip select setup to clock high tCSS 2.0 – 2.0 – 2.0 – ns 6, 8 Address hold from clock high tAH 0.5 – 0.5 – 0.5 – ns 6 Data hold from clock high tDH 0.5 – 0.5 – 0.5 – ns 6 Write hold from clock high tWH 0.5 – 0.5 – 0.5 – ns 6, 7 Chip select hold from clock high tCSH 0.5 – 0.5 – 0.5 – ns 6, 8 Clock enable setup to clock high tCENS 2.0 – 2.0 – 2.0 – ns 6 Clock enable hold from clock high tCENH 0.5 – 0.5 – 0.5 – ns 6 ADV setup to clock high tADVS 2.0 – 2.0 – 2.0 – ns 6 ADV hold from clock high tADVH 0.5 – 0.5 – 0.5 – ns 6 Description Conditions Symbol Min Max Units Current during Snooze Mode ZZ > VIH ISB2 50 mA ZZ active to input ignored tPDS 2cycle ZZ inactive to input sampled tPUS 2cycle ZZ active to SNOOZE current tZZI 2cycle ZZ inactive to exit SNOOZE current tRZZI 0cycle |
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