NAND CONTROLLER

The GLS55VD020 is the heart of a high-performance, flash media-based data storage system. The NAND Controller recognizes the control, address, and data signals on the ATA/IDE bus and translates them into memory accesses for standard NAND-type flash media. Utilizing both Single-Level Cell (SLC) and Multi-Level Cell (MLC) flash media, this technology supports solid state mass storage applications by offering new, expanded functionality while enabling smaller, lighter designs with lower power consumption.The NAND Controller supports standard ATA/IDE protocol with up to PIO Mode-6, Multi-word DMA Mode-4, and Ultra DMA Mode-4 interface. The ATA/IDE interface is widely used in such products as portable and desktop computers, portable media player, music players, handheld data collection scanners, PDAs, handy terminals, personal communicators, audio recorders, monitoring devices, and set-top boxes.

• Industry Standard ATA/IDE Bus Interface
  • Host Interface: 16-bit access
  • Supports up to PIO Mode-6
  • Supports up to Multi-word DMA Mode-4
  • Supports up to Ultra DMA Mode-4
• Interface for Standard NAND Flash Media
  • Flash Media Interface: Single or Dual 8-bit access
  • Supports up to 4 flash media devices per channel
  • Supports up to 8 flash media devices directly
  • Supports up to 64 flash media devices with external decoding logic
  • Supports Single-Level Cell (SLC) or Multi-Level Cell (MLC) flash media
  • 2 KByte and 4 KByte program page size
• 3.0V Power Supply
• 5.0V or 3.0V Host Interface Through VDDQ Pins
• Low Current Operation:
  • Active mode: 25 mA/35 mA (3.0V/5.0V) (typical)
  • Sleep mode: 80 µA/100 µA (3.0V/5.0V) (typical)
• Power Management Unit
  • Immediate disabling of unused circuitry without host intervention
  • Zero wake-up latency
• Write Protection
  • WP#/PD# pin configurable by host for prevention of data overwrites
• 20-byte Unique ID for Enhanced Security
  • Factory Pre-programmed 10-byte Unique ID
  • User-Programmable 10-byte ID
• Programmable, Multitasking NAND Interface
• Firmware Storage in Embedded Super Flash®
• Pre-programmed Embedded Firmware
  • Performs self-initialization on first system Power-on
  • Executes industry standard ATA/IDE commands
  • Implements dynamic wear-leveling algorithms to substantially increase the longevity of flash media
  • Embedded Flash File System
• Built-in Hardware ECC
  • Corrects up to 8 random single-bit errors per 512-byte sector
• Built-in Internal System Clock
• Multi-tasking Technology Enables Fast Sustained Write Performance (Host to Flash)
  • Supports up to 30 MB/sec
• Fast Sustained Read Performance (Flash to Host)
  • Up to 30 MB/sec
• Automatic Recognition and Initialization of Flash Media Devices
  • Seamless integration into a standard SMT manufacturing process
  • 5 sec. (typical) for flash drive recognition and setup
• Commercial and Industrial Temperature Ranges
  • 0°C to 70°C for commercial operation
  • -40°C to +85°C for industrial operation