Toshiba Develops World’s First 16-die Stacked NAND Flash Memory with TSV Technology

  • August 6, 2015
  • Toshiba Corporation

TOKYO—Toshiba Corporation (TOKYO:6502) today announced the development of the world’s first*1 16-die (max.) stacked NAND flash memory utilizing Through Silicon Via (TSV) technology. The prototype will be shown at Flash Memory Summit 2015, to be held from August 11 to 13 in Santa Clara, USA.

The prior art of stacked NAND flash memories are connected together with wire bonding in a package. TSV technology instead utilizes the vertical electrodes and vias to pass through the silicon dies for the connection. This enables high speed data input and output, and reduces power consumption.

Toshiba’s TSV technology achieves an I/O data rate of over 1Gbps which is higher than any other NAND flash memories with a low voltage supply: 1.8V to the core circuits and 1.2V to the I/O circuits and approximately 50%*2 power reduction of write operations, read operations, and I/O data transfers.

product photo

This new NAND flash memory provides the ideal solution for low latency, high bandwidth and high IOPS/Watt in flash storage applications, including high-end enterprise SSD.
A part of this applied technology was developed by the New Energy and Industrial Technology Development Organization (NEDO).

The General Specification of Prototype

Package Type NAND Dual x8 BGA-152
Storage Capacity 128 GB 256 GB
Number of Stacks 8 16
External Dimension W 14 mm 14 mm
D 18 mm 18 mm
H 1.35 mm 1.90 mm
Interface Toggle DDR


  1. : As of August 6, 2015. Toshiba survey.
  2. : Compared with Toshiba’s current products.

Information in this document, including product prices and specifications, content of services and contact information, is correct on the date of the announcement but is subject to change without prior notice.