Features: • Industry Standard ATA/IDE Bus Interface
Host Interface: 8- or 16-bit access
Supports up to PIO Mode-4
Supports up to Multi-word DMA Mode-2
• Interface for standard NAND Flash Media
Flash Media Interface: 8-bit or 16-bit access
- Supports up to 8 flash media devices directly
- Supports up to 255 flash media devices with external decoding logic
Supports Single-Level Cell (SLC) and Multi-Level Cell (MLC) flash media
• Low power, 3.3V core operation
• 5.0V or 3.3V host interface through VDDQ pins
• Low current operation:
Active mode: 25 mA/35 mA (3.3V/5.0V) (typical)
Sleep mode: 40 A/50 A (3.3V/5.0V) (typical)
• Power Management Unit
Immediate disabling of unused circuitry
• Expanded Data Protection
WP_PD# pin configurable by firmware for prevention of data overwrites
Added data security through user-selectable protection zones
• 20-byte Unique ID for Enhanced Security
Factory Pre-programmed 10-byte Unique ID
User-Programmable 10-byte ID
• 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 ECC corrects up to 3 random 12-bit symbols of error per 512-byte sector
• Internal or External System Clock Option
• Multi-tasking Technology enables Fast Sustained Write Performance (Host to Flash)
SST55LD019A supports up to 6 MB/sec
SST55LD019B/C support up to 10MB/sec
• Fast Sustained Read Performance (Flash to Host)
Up to 10 MB/sec
• Automatic Recognition and Initialization of Flash Media Devices
Seamless integration into a standard SMT manufacturing process
0.5 sec/MB (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
84-ball TFBGA
64-lead TQFP (reduced function)SpecificationsTemperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. -55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
D.C. Voltage on Pins1 I3, I4, O4, and O5 to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD+0.5V
Transient Voltage (<20 ns) on Pins1 I3, I4, O4, and O5 to Ground Potential . . . . . . . . . . . . . . . . -2.0V to VDD+2.0V
D.C. Voltage on Pins1 I1, I2, O1, O2, and O6 to Ground Potential. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDDQ+0.5V
Transient Voltage (<20 ns) on Pins1 I1, I2, O1, O2, and O6 to Ground Potential. . . . . . . . . . . . . -2.0V to VDDQ+2.0V
Package Power Dissipation Capability (Ta = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Through Hole Lead Soldering Temperature (10 Seconds). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Surface Mount Lead Soldering Temperature (3 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C
Output Short Circuit Current2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
1. Please refer to Table 3-1 for pin assignment information.
DescriptionSST55LD019B SST's ATA Flash Disk Controller is the heart of a highperformance, flash media-based data storage system. The ATA Flash Disk Controller recognizes the control, address, and data signals on the ATA/IDE bus and translates them into memory accesses to the standard NANDtype flash media. The SST55LD019A/B/C device supports both Single Level Cell (SLC) and Multi-Level Cell (MLC) flash media. This technology suits solid state mass storage applications offering new, expanded functionality while enabling smaller, lighter designs with lower power consumption.
The ATA/IDE interface is widely used in such products as portable and desktop computers, digital cameras, music players, handheld data collection scanners, PDAs, handy terminals, personal communicators, audio recorders, monitoring devices, and set-top boxes. SST's ATA Flash Disk Controller supports standard ATA/IDE protocol with up to PIO Mode-4 and Multi-word DMA Mode-2 interface.
Utilizing SST55LD019B SST's proprietary SuperFlash memory technology, the ATA Flash Disk Controller is factory pre-programmed with an embedded flash file system which, upon initial Power-on, recognizes the attached flash media devices, sets up a bad block table, executes all necessary handshaking routines for flash media support, and, finally, performs the low-level format. This process typically takes about 0.5 sec/MB of drive capacity, allowing a 640 MByte flash drive to be fully initialized in about 5 minutes. This technology enables a very fast, completely seamless integration of flash drives into an embedded design.
For added manufacturing flexibility, system debug, re-initialization, and user customization can be accomplished either through the ATA/IDE interface, for ATA Disk Module or flash drive products, or through the Serial Communication Interface (SCI), for fully embedded ATA Flash Disk Controller designs.
SST55LD019B Data Sheet
