512-Mbit NAND Flash Leverages Dual-Die Packaging

By packaging two single-level, 256-Mbyte NAND flash EEPROM die in TSOPs and SmartMedia cards, the company has achieved 512-Mbyte NAND flash densities. The 256-Mbyte NAND die on which these products are based uses 0.25-µm process technology and a shallow trench isolation cell, enabling greater storage capacity within a smaller area without sacrificing chip performance.The TC58512FT comes in TSOP Type I packaging, while the TC58512DC incorporates the firm’s SmartMedia packaging, providing 64 Mbytes of removable storage. Identical page and block specifications are used, making the SmartMedia devices fully backward-compatible with existing products. Both operate from a 3.3V supply.