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GM76C256CLLET 数据表(PDF) 8 Page - Hynix Semiconductor |
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GM76C256CLLET 数据表(HTML) 8 Page - Hynix Semiconductor |
8 / 11 page GM76C256C Series Rev 03 / Apr. 2000 7 Notes(WRITE CYCLE): 1. A write occurs during the overlap of a low /CS and a low /WE. A write begins at the latest transition among /CS going low and /WE going low: A write ends at the earliest transition among /CS going high and /WE going high. tWP is measured from the beginning of write to the end of write. 2. tCW is measured from the later of /CS going low to the end of write . 3. tAS is measured from the address valid to the beginning of write. 4. tWR is measured from the end of write to the address change. tWR is applied in case a write ends as /CS, or /WE going high. 5. If /OE and /WE are in the read mode during this period, and the I/O pins are in the output low-Z state, input of opposite phase of the output must not be applied because bus contention can occur. 6. If /CS goes low simultaneously with /WE going low, or after /WE going low, the outputs remain in high impedance state. 7. DOUT is the same phase of the latest written data in this write cycle. 8. DOUT is the read data of the new address. DATA RETENTION CHARACTERISTIC TA = 0 °C to 70°C (Normal) / -25°C to 85°C (Extended) unless otherwise specified. Symbol Parameter Test Condition Min Typ Max Unit VDR Vcc for Data Retention CS>Vcc-0.2V, 2.0 - - V VIN > Vcc - 0.2V or VIN < Vss + 0.2V ICCDR Data Retention Current Vcc=3.0V, L - 1 15 uA /CS>Vcc - 0.2V, LL - 0.5 7 uA VIN > Vcc - 0.2V or LE - 1 20 uA VIN < Vss + 0.2V LLE - 0.5 10 uA tCDR Chip Deselect to Data Retention Time See Data Retention 0 - - ns tR Operating Recovery Time Timing Diagram tRC(2) - - ns Notes 1. Typical values are under the condition of TA = 25 °C. 2. tRC is read cycle time. DATA RETENTION TIMING DIAGRAM CS VDR CS>VCC-0.2V tCDR tR VSS VCC 4.5V 2.2V DATA RETENTION MODE |
类似零件编号 - GM76C256CLLET |
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类似说明 - GM76C256CLLET |
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