AS4C64M8SD-7TCN

The AS4C64M8SD-7TCN is a 512Mbit synchronous DRAM from Alliance Memory, Inc., built with SDRAM technology and organized as 64M x 8. This LVTTL-compatible memory device operates at up to 133MHz clock frequency with 5.4ns access time, making it suitable for embedded systems, consumer electronics, and industrial applications requiring reliable volatile memory storage in a compact 54-TSOP II package.

Key Features

• Memory Architecture - 512Mbit density with 64M x 8 organization provides flexible memory configuration for systems requiring byte-wide data access with substantial storage capacity.
• SDRAM Performance - 133MHz clock frequency with 5.4ns access time delivers responsive read/write operations for applications with moderate bandwidth requirements. Write cycle time of 15ns enables efficient data updates.
• Interface Compatibility - LVTTL interface simplifies integration with standard logic families and reduces voltage translation requirements in mixed-signal designs.
• Power Supply - 3V to 3.6V supply voltage range accommodates common power rails in embedded systems and supports straightforward power management.
• Package and Mounting - 54-TSOP II package (0.400", 10.16mm width) offers a proven form factor with good pin accessibility for PCB layout and manufacturing.
• Temperature Range - 0°C to 70°C operating temperature covers commercial-grade applications in controlled environments.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main memory or buffer storage in single-board computers, embedded controllers, and data acquisition systems where 512Mbit capacity provides adequate working memory without over-provisioning.
• Consumer Electronics - The device fits set-top boxes, digital media players, and home automation controllers where LVTTL compatibility and commercial temperature range align with indoor operating conditions and cost-sensitive designs.
• Network Equipment - Small office routers, switches, and communication modules leverage this memory for packet buffering and routing tables where synchronous operation at 133MHz supports network processing requirements.
• Industrial Control and Monitoring - PLCs, HMI terminals, and data loggers deployed in climate-controlled facilities utilize this SDRAM for program execution and temporary data storage within the 0°C to 70°C operating envelope.
• Test and Measurement Instruments - Bench-top equipment and laboratory instruments incorporate this memory for waveform capture, measurement data buffering, and user interface operation where compact packaging and reliable performance are essential.

Unique Advantages

• Simplified BOM Management: Active lifecycle status ensures ongoing availability, reducing long-term supply chain concerns and simplifying component sourcing for production runs and field service inventory.
• Standard Interface Compatibility: LVTTL logic levels eliminate the need for level shifters when interfacing with common microcontrollers and FPGAs operating at 3.3V, reducing component count and board complexity.
• Proven SDRAM Technology: Mature synchronous DRAM architecture offers predictable timing characteristics and extensive controller IP availability, accelerating time-to-market for new designs.
• Balanced Density and Cost: 512Mbit capacity provides sufficient memory for many embedded applications without the cost premium of higher-density parts, optimizing system economics for moderate memory requirements.
• Compact Footprint: 54-TSOP II package delivers high pin count in a space-efficient format, supporting dense PCB layouts in size-constrained products.
• Documented Performance: Specified 5.4ns access time and 133MHz clock frequency enable accurate timing analysis and margin calculations during system design verification.

Why Choose AS4C64M8SD-7TCN?

The AS4C64M8SD-7TCN offers a dependable memory solution for commercial-grade embedded systems where 512Mbit density, LVTTL compatibility, and synchronous operation at 133MHz align with application requirements. This SDRAM is particularly well-suited for designs that need byte-wide memory access in a standard TSOP package, benefit from voltage compatibility with 3.3V logic families, and operate in controlled temperature environments. Alliance Memory's active support for this device helps ensure component availability throughout product lifecycles.

Engineers developing cost-conscious embedded products, replacing legacy memory components, or designing new systems with moderate memory bandwidth needs will find this SDRAM provides reliable performance with straightforward integration into existing SDRAM controller architectures.

Get a Quote

Contact our sales team to discuss your memory requirements, receive pricing for your volume needs, and learn about availability for the AS4C64M8SD-7TCN. Our technical support staff can assist with integration questions and provide additional documentation to support your design efforts.