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Everspin Technologies EMxxLX MRAM Memory Devices

Everspin EMxxLX MRAM Memory Devices are Expanded Serial Peripheral Interface (xSPI) based on a unique industrial STT MRAM technology. These memory devices are high-performance, multiple I/O, and SPI-compatible Magnetoresistive Random Access memory (MRAM) devices. The EMxxLX memory devices feature a high-speed, low pin count SPI-compatible bus interface with a clock frequency of up to 200MHz. These memory devices also feature a 1.65V to 2V voltage range, a dedicated 256-byte OTP area outside main memory, 3-byte and 4-byte address modes, and low power modes. Typical applications include industrial automation, datacenter, engineering emulation, automotive and transportation, and gaming.

Features

  • Expanded SPIbus interface supporting Octal, Quad, Dual, and single SPI protocol
  • Up to 200MHz Single- and Double Transfer Rate (STR/DTR) for Octal SPI
  • Up to 133MHz, SPI, DSPI, and QSPI
  • Unlimited read, write, and erase operations for the supported life of the product
  • 10 years minimum data retention across temperature
  • JEDEC compliant: JESD251 and JESD251-1
  • Byte-level writes and reads with no erase required as persistent memory
  • Data integrity with no external ECC required
  • Low power modes:
    • <350μA (64Mb) standby
    • Deep power down ∼50μA w/ exit time <100μs
  • SPI compatibility: NVSRAM, FRAM, NOR, and toggle MRAM
  • SPI, xSPI commands for program/erase emulated NOR compatible Execute-in-place (XIP)
  • Nonvolatile settings are not reflow-protected
  • Dedicated 256-byte OTP area outside main memory:
    • Readable and user-lockable
    • Permanent lock with WRITE OTP command
    • Not reflow protected
  • Erase capability:
    • Chip/bulk erase and sector erase
    • Subsector erase 4KB, 32KB granularity
  • Security and writing protection:
    • 16 configurable hardware write-protected regions plus top/bottom select
    • Program/erase protection during power-up
    • CRC command to detect accidental changes to user data
  • 1.65V to 2V (1.8V) voltage range
  • Density:
    • 8Mb, 16Mb, 32Mb, and 64Mb
    • 400MBps sustained throughput with OSPI at 200MHz, DTR, for reads and writes
  • Boot mode configurations in x1, x2, x4, and x8
  • Software reset and hardware reset pins available
  • 3-byte and 4-byte address modes
  • Sequential (burst) reads and writes
  • JEDEC-standard 3-byte signature
  • JEDEC standard, RoHS compliant packages:
    • 24-ball BGA, 6mm x 8mm (5 x 5 array)
    • 8-pin DFN, 6mm x 8mm
  • Operating temperature ranges:
    • Commercial from 0°C to +70°C
    • Industrial from -40°C to +85°C

Applications

  • Industrial automation
  • Data center
  • Engineering emulation
  • Automotive and transportation
  • Gaming

Block Diagram

Block Diagram - Everspin Technologies EMxxLX MRAM Memory Devices
Published: 2022-11-30 | Updated: 2025-09-15