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32 Gb ReRAM chip

23.02.2013

Back in early January, the preliminary program of the ISSCC 2013 conference announced an interesting joint report by SanDisk and Toshiba on the development of the industry's first ReRAM chip (resistive memory) with a capacity of 32 Gbps. And now some detailed information about the new product has become available.

The chip was released using a 24nm process technology. The area of one cell is 24 x 24 nm, and the area of the entire crystal is 130,7 mm2. The memory page size is 2 kilobytes. The read and write latencies are 40 and 230 µs, respectively.

The traditional cross-point ReRAM architecture uses conductive metal oxides. Selective devices are located at the intersection of horizontal lines and vertical bit lines, and cells are formed in the same plane with other circuits. The new chip forms a two-layer array of memory cells on shared page registers and readout amplifiers. This made it possible to increase the density of the components. According to the source, this approach is similar to the technology of Matrix Semiconductor, which was bought by SanDisk.

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