Toshiba 24-nm 8 Gb BENAND SLC NAND flash now in distribution
BENAND removes the burden of ECC from the host processor and enables designers to access leading edge process NAND flash technology. To ensure easy migration, BENAND’s features such as Page/Block size, spare area size, Commands, Interface and Package are kept the same as legacy 4x-nm SLC NAND.
The smaller cells of the new NAND flash memory are more vulnerable to program/erase stresses, which requires more complex ECC to maintain the desired levels of reliability. For example, small density 4x-nm SLC NAND requires 1-bit ECC, 3x-nm SLC NAND requires 4-bit ECC and 2x-nm SLC NAND requires 8-bit ECC. ECC is usually built into the host controllers, often making switching to newer NAND difficult as the host processor must be changed to enable required level of error correction. BENAND eliminates this change by moving the ECC onto the NAND chip and enabling legacy controllers to be used with the latest NAND technology. This reduces BOM and system design costs while maintaining the high reliability of SLC NAND.
The line-up of BENAND ranges from 1 Gb to 8 Gb, available in TSOP and BGA packages as well as in industrial and consumer operating temperature ranges.