U8 NAND Flash Controller

Reliable NAND Flash Controller for Industrial Storage Solutions

U8 | USB 2.0 NAND Flash Controller

Reliable USB 2.0 NAND Flash Controller for Industrial grade USB Flash Drives, eUSB Modules, MCPs & DoB Storage Solutions

The Hyperstone U8 family of flash memory controllers together with provided application and flash specific firmware offers an easy-to-use turnkey platform for industrial, high endurance robust flash memory cards or modules compatible to host systems with USB 2.0 interface.

  • Designed to satisfy industrial requirements
  • hyReliability™ Flash Management 
  • hyMap® Flash Translation Layer and mapping 
  • Continuously updated Flash Memory chip support and long term availability
  • Flexible 96-Bit/1K BCH ECC engine supporting all Flash Memory requirements
  • Optimized 32-Bit RISC core, instruction set for Flash Memory handling
  • High performance on-the-fly AES 128 and 256 encryption engine
  • Custom features can be implemented with simple firmware upgrades
  • Turnkey solution including firmware, manufacturing kit, test and development hardware, as well as reference schematics

 Download U8 Product Flyer 

Hyperstone U8B NAND Flash Memory Controller

U8 Product Information

Target Application

  • Industrial USB Flash Drive
  • eUSB, embedded USB module
  • Ultra durable Flash Drive
  • Security Flash Drive
  • Multi-Chip-Package (MCP)
  • Disk-on-Board


  • Host transfer rate of up to 480 MBit/s
  • Sequential read and write up to 35 MB/s

Host Interface & Compliance

  • Fully compliant to USB 2.0 specifications
  • USB mass storage device class (MSC)
  • USB human interface device class (HID) support is possible
  • 4 configurable endpoints
  • Hi-speed and Full-speed mode possible
  • Bulk, isochronous, and interrupt transfer modes
  • S.M.A.R.T. and Secure Erase support using ATA pass through
  • Configurable Early-Acknowledge

Controller & CPU

  • High performance 32-Bit Hyperstone RISC microprocessor
  • Large internal RAM provides firmware flexibility
  • Unique ID for security applications
  • AES encryption engine 128 and 256-Bit
  • High performance on-the-fly encryption/decryption
  • Flexible clock frequency generation through internal oscillator and PLL
  • Automatic power down mode during wait periods for host data of Flash Memory operation completion, automatic sleep mode during host inactivity periods
  • Supply voltage 3.3V ± 5%
  • Application Programming Interface (API) and Software Development Kit (SDK)

Flash Memory & Interface Handling

  • Direct Flash Memory Access (DFA) co-processor including page buffers and interleaving capability
  • Synchronous DDR interface compliant with Toggle DDR and ONFI 2.3, compatible with all DDR Flash Memory devices
  • Asynchronous SDR interface, ONFI 1.0 compliant, compatible with all legacy interface Flashes
  • Data transfer rate to Flash up to 200 MB/s
  • Flexible 96-Bit/1K BCH ECC engine
  • CRC for additional reliability
  • Direct connection of up to 4 Flash Memory chip enables (CE) 
  • Flash memory power down logic and Flash Memory write protect control
  • Supporting all Flash technologies and all page sizes up to 16 KB
  • On-chip voltage regulator for 1.8V Flash Memory I/O power

Flash Memory Management

  • hyReliability™ Flash Memory Management optimizing reliability, power fail safety, endurance, data retention, and performance
  • Complete Flash Translation Layer (FTL) for random Flash data access including mapping of logical block addresses (LBA) to physical block addresses (PBA)
  • Bad Block Management
  • Static and Global Wear leveling to maximize write endurance
  • Inherent on-the-fly garbage collection
  • Read Disturb Management, dynamic data refresh to maximize data retention and refresh data subject to read disturbance
  • Management of sudden power-fails
  • Interleaving, cache, and multi-plane programming
  • Firmware is stored redundantly for recovery and refresh
  • In-Field Firmware update without user data loss

Block Diagram
Order Information

  • U8-RBQ03 (QFN 76, 9.0 x 9.0 x 0.9mm, 4 CEs, RoHS, -40 to +85 °C)
  • U8-RB1Q03  (QFN 76, 9.0 x 9.0 x 0.9mm, 4 CEs, RoHS, -40 to +85 °C)

Register with us to gain exclusive access to more product documents!

If you sign an NDA with us, we can give you access to exclusive documents and firmware downloads. Send us an email after you register and we will start the process. 


European Sales Team

Konstanz, Germany

American Sales Team

Mission Viejo, California

Asia Pacific Sales Team

Taipei City, Taiwan