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U634H256SK25 Datasheet(PDF) 3 Page - Zentrum Mikroelektronik Dresden AG |
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U634H256SK25 Datasheet(HTML) 3 Page - Zentrum Mikroelektronik Dresden AG |
3 / 14 page 3 April 21, 2004 U634H256 DC Characteristics Symbol Conditions C-Type K-Type A/M-Type Unit Min. Max. Min. Max. Min. Max. Operating Supply Currentc ICC1 VCC VIL VIH tc tc tc = 5.5 V = 0.8 V = 2.2 V = 25 ns = 35 ns = 45 ns 95 75 65 100 80 70 - 80 - mA mA mA Average Supply Current during STOREc ICC2 VCC E W VIL VIH = 5.5 V ≤ 0.2 V ≥ VCC-0.2 V ≤ 0.2 V ≥ VCC-0.2 V 677 mA Average Supply Current during PowerStore Cycle ICC4 VCC VIL VIH = 4.5 V = 0.2 V ≥ VCC-0.2 V 444 mA Standby Supply Currentd (Cycling TTL Input Levels) ICC(SB)1 VCC E tc tc tc = 5.5 V = VIH = 25 ns = 35 ns = 45 ns 40 36 33 42 38 35 - 38 - mA mA mA Operating Supply Current at tcR = 200 nsc (Cycling CMOS Input Levels) ICC3 VCC W VIL VIH = 5.5 V ≥ VCC-0.2 V ≤ 0.2 V ≥ VCC-0.2 V 20 20 20 mA Standby Supply Curentd (Stable CMOS Input Levels) ICC(SB) VCC E VIL VIH = 5.5 V ≥ VCC-0.2 V ≤ 0.2 V ≥ VCC-0.2 V 334 mA Recommended Operating Conditions Symbol Conditions Min. Max. Unit Power Supply Voltageb VCC 4.5 5.5 V Input Low Voltage VIL -2 V at Pulse Width 10 ns permitted -0.3 0.8 V Input High Voltage VIH 2.2 VCC+0.3 V b: VCC reference levels throughout this datasheet refer to VCCX if that is where the power supply connection is made, or VCAP if VCCX is con- nected to ground. c: ICC1 and ICC3 are depedent on output loading and cycle rate. The specified values are obtained with outputs unloaded. The current ICC1 is measured for WRITE/READ - ratio of 1/2. ICC2 is the average current required for the duration of the STORE cycle (STORE Cycle Time). d: Bringing E ≥ V IH will not produce standby current levels until any nonvolatile cycle in progress has timed out. See MODE SELECTION able. The current ICC(SB)1 is measured for WRITE/READ - ratio of 1/2. |
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