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AM29BDS640GTC9WSI Datasheet(PDF) 5 Page - SPANSION |
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AM29BDS640GTC9WSI Datasheet(HTML) 5 Page - SPANSION |
5 / 65 page October 1, 2003 25903C1 Am29BDS640G 3 Prelimin ary The sector erase architecture allows memory sectors to be erased and reprogrammed without affecting the data contents of other sectors. The device is fully erased when shipped from the factory. Hardware data protection measures include a low VCC detector that automatically in- hibits write operations during power transitions. The device also offers two types of data protection at the sector level. The sector lock/unlock command sequence disables or re-enables both program and erase operations in any sector. When at VIL, WP# locks sectors 0 and 1 (bottom boot device) or sectors 132 and 133 (top boot device). The device offers two power-saving features. When addresses have been stable for a specified amount of time, the device enters the automatic sleep mode. The system can also place the device into the standby mode. Power consumption is greatly reduced in both modes. Spansion flash technology combines years of flash memory manufacturing experience to produce the highest levels of quality, reliability and cost effectiveness. The device electri- cally erases all bits within a sector simultaneously via Fowler-Nordheim tunnelling. The data is programmed using hot electron injection. |
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