NAND Controller
SST55VD031
SST55LD019A/B/CHigh-Performance ATA Flash Disk Controller
Data Sheet
FEATURES:
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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-5
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Programmable, Multitasking NAND Interface
Firmware Storage in Embedded SuperFlash
Pre-programmed Embedded Firmware
– Performs self-initialization on first system Power-on
– Executes industry standard ATA/IDE commands
– Implements advanced wear-leveling algorithms to
substantially increase the longevity of flash media
– Embedded Flash File System
Built-in Hardware ECC
– Corrects up to 8 random bits of error per
512-byte sector
Built-in Internal System Clock
Multi-tasking Technology enables Fast
Sustained Write Performance (Host to Flash)
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Interface for Standard NAND Flash Media
– Flash Media Interface: Single or Dual 8-bit access
- 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
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- 2 KByte and 4 KByte program page size
- 8 KByte program page size (SLC, single
channel only)
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Low Power, 3V Power Supply and NAND flash
interface
3V host interface
Low Power Operation:
– Active mode: 25 mA (3V) (typical)
– Sleep mode: 65 µA (3V) (typical)
– Supports up to 30 MByte/sec
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Fast Sustained Read Performance (Flash to Host)
– Up to 40 MByte/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
Packages Available
– 100-lead TQFP – 14mm x 14mm x 1.10mm
– 85-ball VFBGA – 6mm x 6mm x 0.86mm
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Power Management Unit
– Immediate disabling of unused circuitry without
host intervention
– Zero wake-up latency
Expanded Data Protection
– WP#/PD# pin configurable by firmware for
prevention of data overwrites
– Added data security through user-selectable
protection zones
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20-byte Unique ID for Enhanced Security
– User-Programmable 10-byte ID
All non-Pb (lead-free) devices are RoHS compliant
PRODUCT DESCRIPTION
The NAND Controller is the heart of a high-performance,
flash media-based data storage system. The NAND Con-
troller recognizes the control, address, and data signals on
the ATA/IDE bus and translates them into memory
accesses to the standard NAND-type flash media. The
SST55VD031 device supports Single-Level Cell (SLC)
and Multi-Level Cell (MLC) flash media. This technol-
ogy is ideal for solid-state mass storage applications offer-
ing, expanded functionality while enabling smaller, lighter
designs with lower power consumption.
systems, and set-top boxes. The SST NAND Controller
supports standard ATA/IDE protocol with up to PIO Mode-
6, Multi-word DMA Mode-4, and Ultra DMA Mode-5
interface.
The NAND Controller uses SST proprietary SuperFlash
memory technology and is factory pre-programmed with
an embedded flash file system. Upon initial power-on, the
NAND Controller recognizes attached flash media
devices, sets up a bad block table, executes all necessary
handshaking routines for flash media support, and per-
forms the low-level format.
The ATA/IDE interface is widely used in such products as
portable and desktop computers, digital cameras, multi-
media players, music players, handheld data collection
scanners, PDAs, handy terminals, personal communica-
tors, audio recorders, monitoring devices, global positioning
The entire set up process typically takes about 3 sec plus
0.5 sec for each GByte of drive capacity. A 16 GByte flash
drive is fully initialized in about 11 seconds.
©2009 Silicon Storage Technology, Inc.
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc. Some content is reproduced from the CompactFlash
Specification (2.0) by permission of the CompactFlash Association. Other content is reproduced from the ATA/ATAPI-6 (T13/1410D revision 3b) spec-
ification by permission of the National Committee for Information Technology Standards. These specifications are subject to change without notice.
S71397-03-000
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08/09