Avalanche Technology has introduced Serial SPI P-SRAM (Persistent SRAM), a drop-in replacement for Everspin Toggle-MRAM products to provide supply chain continuity and flexibility to MRAM customers. The Serial SPI P-SRAM products have industry-standard architecture, interface, features and package options to enable a simple drop-in solution that eliminates costly re-designs of the system. These industrial grade products are based on Avalanche’s industry leading 40-nm Perpendicular Spin Transfer Torque MRAM (STT-MRAM) technology and are a reliable second source to the Everspin MR2xH40 and MR25H10 products. STT-MRAM lends itself to smaller, more-scalable and lower-power memory cells compared to Toggle-MRAM. Consequently STT-MRAM based products are lower-power and smaller in size compared to equivalent Toggle-MRAM products.
This new series of Serial P-SRAM devices is offered with a standard SPI interface operating at up to 50MHz clock rate in 1Mb and 4Mb density options, in two packages – 8-pin SOIC and 8-pin WSON. In addition to providing supply chain continuity, the Serial SPI P-SRAM products also offer customers an ability to future proof their designs. This series includes products with 8Mb and 16Mb density options which will be available to customers by the end of Q4 2020. Table 1 shows a comparison of features of Everspin SPI MRAM and Avalanche Serial SPI P-SRAM devices.
Notes: Everspin does not list actual endurance number. All MRAM devices have a finite number of write cycles. “Unlimited” is typically in reference to other non-volatile memories such as NOR or NAND Flash with endurances of 105 to 106 program/erase cycles.
Table 2 shows direct replacements for Everspin devices. Designers looking for more information can start with the device datasheet and migration application note. This collateral can be downloaded through the links in the table.
1Mb and 4Mb Serial SPI P-SRAM samples are available now, contact us HERE to get your qualification started.