High-Performance OctaBus™ Serial NOR Flash

Macronix OctaBus memory is a portfolio of extremely high-speed memory products built on serial peripheral interface (SPI) and command protocols. Moving from current quad I/O (four I/O) to octal (eight I/O) broadens the serial NOR Flash throughput. OctaBus memory also retains the user interface compatible with the industry-standard single I/O SPI NOR, ensuring the user experience remains unchanged with minimum changes.

The OctaBus memory is available in LM (3 V) and UM (1.8 V) series, and it enhances the performance to 250 MHz frequency, combined with the JEDEC JESD251 (xSPI) compliant DDR (8D-8D-8D) mode. The data transfer rate has therefore been increased from 100 MB/s to 500 MB/s, enabling instant-on capability. The improved performance provides code eXecute In Place (XIP) with more efficiency and shortens the access time in high-density offerings.

OctaBus LW and UW series have multi-bank architecture and provide concurrent operation that enhances the system performance and allows code updates in the background. This solution is ideal for OTA updates, which are becoming more prevalent in automotive, Edge, and IoT applications.