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V3021SO8A Datasheet(PDF) 5 Page - EM Microelectronic - MARIN SA |
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V3021SO8A Datasheet(HTML) 5 Page - EM Microelectronic - MARIN SA |
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5 / 15 page  R V3021 Copyright © 2005, EM Microelectronic-Marin SA 5 www.emmicroelectronic.com Timing Characteristics (standard temperature range) VSS= 0V and TA=-40 to +85°C, unless otherwise specified Parameter Symbol Test Conditions Min. Max. Min. Typ. Max. Unit VDD ≥ 2V VDD = 5.0V ±10% Chip select duration tCS Write cycle 200 50 ns RAM access time (note 1) tACC CLOAD = 50pF 180 50 60 ns Time between two transfers tW 500 100 ns Rise time (note 2) tR 10 200 10 200 ns Fall time (note 2) tF 10 200 10 200 ns Data valid to Hi-impedance (note 3) tDF 10 100 15 30 40 ns Write data settle time (note 4) tDW 60 50 ns Data hold time (note 5) tDH 80 25 ns Advance write time tADW 25 10 ns Write pulse time (note 6) tWC 200 50 ns Table 4 Timing Characteristics (standard temperature range) VSS= 0V and TA=-40 to +125°C, unless otherwise specified Parameter Symbol Test Conditions Min. Max. Min. Typ. Max. Unit VDD ≥ 2V VDD = 5.0V ±10% Chip select duration tCS Write cycle 200 60 ns RAM access time (note 1) tACC CLOAD = 50pF 180 50 60 ns Time between two transfers tW 500 120 ns Rise time (note 2) tR 10 100 10 100 ns Fall time (note 2) tF 10 100 10 100 ns Data valid to Hi-impedance (note 3) tDF 10 100 5 30 50 ns Write data settle time (note 4) tDW 60 50 ns Data hold time (note 5) tDH 80 25 ns Advance write time tADW 25 15 ns Write pulse time (note 6) tWC 200 60 ns Table 4 ex. Note 1 : tACC starts from RD or CS , whichever activates last Typically, tACC = 5 + 0.9 CEXT in ns; where CEXT (external parasitic capacitance) is in pF Note 2 : CS , RD , DS , WR and R/ W rise and fall times are specified by tR and tF Note 3 : tDF starts from RD or CS , whichever deactivates first Note 4 : tDW ends at WR or CS , whichever deactivates first Note 5 : tDH starts from WR or CS , whichever deactivates first Note 6 : tWC starts from WR or CS , whichever activates last and ends at WR or CS , whichever deactivates first |
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