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RAMXEED MB85RQx Quad SPI-Compatible FeRAMs

RAMXEED MB85RQx Quad SPI-Compatible FeRAMs support 108MHz operating frequency, and can transfer data at a high speed of 54MB/s. These FeRAMs are available in configurations of 1048576 words x 8 bits (MB85RQ8MX and MB85RQ8MLX) and 524288 words x 8 bits (MB85RQ4ML). The MB85RQx quad SPI-compatible FeRAMs support the Quad Serial Peripheral Interface (QSPI), enabling high-bandwidth read and write at 54MB/s using four bi-directional pins (Quad I/O). These FeRAMs can retain data without a backup battery, unlike SRAM. The MB85RQx FeRAMs provide significant improvement over the number of read and write operations supported by flash memory and E2PROM. These FeRAMs are RoHS-compliant and are available in SOP-16 packages. Typical applications include networking, gaming, industrial computing, cameras, and RAID controllers.

Features

  • Transfer data at a high speed of 54MB/s
  • Retain data without a backup battery
  • Significant improvement over the number of read and write operations supported by flash memory and E2PROM
  • RoHS compliant

Applications

  • Networking
  • Gaming
  • Industrial computing
  • Cameras
  • RAID controllers

Specifications

  • Memory density:
    • 8Mbit (1048576 word x 8 bit) for MB85RQ8MX/MB85RQ8MLX
    • 4Mbit (524288 word x 8 bit) for MB85RQ4ML
  •  Serial Peripheral Interface (SPI):
    • SPI/dual SPI/quad SPI (MB85RQ8MX/MB85RQ8MLX)
    • SPI/quad SPI (MB85RQ4ML)
  • 108MHz operating frequency
  • Operating power supply voltage range:
    • 2.7V to 3.6V (MB85RQ8MX)
    • 1.7V to 1.95V (MB85RQ8MLX/MB85RQ4ML)
  • Operating temperature range:
    • -40°C to 105°C (MB85RQ8MX/MB85RQ8MLX)
    • -40°C to 85°C (MB85RQ4ML)
  • Data retention:
    • 50.4 years (85°C)
    • 13.7 years (105°C)
    • 4.2 years (125°C)
  • SOP-16 package

Block Diagram (MB85RQ8MX/MB85RQ8MLX)

Block Diagram - RAMXEED MB85RQx Quad SPI-Compatible FeRAMs

Block Diagram (MB85RQ4ML)

RAMXEED MB85RQx Quad SPI-Compatible FeRAMs

Datasheets

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Publicado: 2026-03-17 | Actualizado: 2026-03-18