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U634H256D1C25 Datasheet(PDF) 2 Page - Zentrum Mikroelektronik Dresden AG |
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U634H256D1C25 Datasheet(HTML) 2 Page - Zentrum Mikroelektronik Dresden AG |
2 / 14 page 2 April 21, 2004 U634H256 Operating Mode E HSB W G DQ0 - DQ7 Standby/not selected H H ** High-Z Internal Read L H H H High-Z Read L H H L Data Outputs Low-Z Write L H L * Data Inputs High-Z Truth Table for SRAM Operations Block Diagram Absolute Maximum Ratingsa Symbol Min. Max. Unit Power Supply Voltage VCC -0.5 7 V Input Voltage VI -0.3 VCC+0.5 V Output Voltage VO -0.3 VCC+0.5 V Power Dissipation PD 1W Operating Temperature C-Type K-Type A-Type M-Type Ta 0 -40 -40 -55 70 85 125 125 °C °C °C °C Storage Temperature Tstg -65 150 °C Characteristics All voltages are referenced to VSS = 0 V (ground). All characteristics are valid in the power supply voltage range and in the operating temperature range specified. Dynamic measurements are based on a rise and fall time of ≤ 5 ns, measured between 10 % and 90 % of VI,as well as input levels of VIL = 0 V and VIH = 3 V. The timing reference level of all input and output signals is 1.5 V, with the exception of the tdis-times and ten-times, in which cases transition is measured ± 200 mV from steady-state voltage. *H or L a: Stresses greater than those listed under „Absolute Maximum Ratings“ may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at condition above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. EEPROM Array 512 x (64 x 8) STORE RECALL SRAM Array 512 Rows x 64 x 8 Columns A0 - A13 Store/ Recall Control HSB VCCX VSS VCAP G E W Software Detect Power Control VCCX VCAP A5 A6 A7 A8 A9 A11 A12 A13 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 Column I/O Column Decoder A0 A1 A2 A3 A4A10 A14 |
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