AS4C64M8SA-7TCNTR

The AS4C64M8SA-7TCNTR is a 512Mbit synchronous dynamic random access memory (SDRAM) featuring a 64M x 8 organization and parallel interface. Operating at clock frequencies up to 133MHz with a 5.4ns access time, this SDRAM delivers reliable memory performance for embedded systems and industrial applications requiring moderate speed and density. The 3V to 3.6V voltage supply range and standard 54-TSOP II package make it a versatile choice for legacy and existing designs.

Key Features

• Memory Core - 512Mbit SDRAM with 64M x 8 bit organization provides a balance of density and word width suitable for data buffering and program storage in embedded controllers.
• Clock Frequency - 133MHz operation with 5.4ns access time delivers sufficient bandwidth for moderate-speed applications without the complexity of higher-speed interfaces.
• Voltage Supply - 3V to 3.6V operating range aligns with standard 3.3V logic families, simplifying power supply design and integration.
• Parallel Interface - Traditional parallel SDRAM interface offers straightforward integration with processors and controllers featuring SDRAM memory controllers.
• Package - 54-pin TSOP II package in 10.16mm width provides a compact footprint while maintaining compatibility with standard PCB assembly processes.
• Temperature Range - 0°C to 70°C operating temperature suits commercial and indoor industrial environments.

Typical Applications

• Legacy Industrial Controls - This SDRAM serves as program and data memory in embedded controllers and PLCs where the parallel interface matches existing processor architectures and the commercial temperature range meets environmental requirements.
• Set-Top Boxes and Consumer Electronics - The 512Mbit density and 133MHz speed support menu systems, graphics buffering, and user interface functions in devices operating in controlled indoor environments.
• Office Equipment - Printers, copiers, and multifunction devices use this SDRAM for print buffering and image processing where moderate speed and density requirements align with the component's specifications.
• Embedded Computing Systems - Single-board computers and embedded modules leverage this parallel SDRAM for main system memory in applications where 133MHz bus speeds are adequate and compatibility with older processor families is required.

Unique Advantages

• Proven Technology: Standard SDRAM architecture offers well-understood timing characteristics and broad processor compatibility, reducing design risk and simplifying validation.
• Design Continuity: The TSOP II package and parallel interface enable component substitution in existing designs or support for legacy platforms requiring long-term availability.
• Simplified Power Management: Single 3V to 3.6V supply voltage eliminates the need for multiple power rails, reducing BOM cost and board complexity.
• Cost-Effective Density: 512Mbit capacity provides sufficient memory for many embedded applications without over-provisioning or the expense of higher-density components.
• Standard Form Factor: The 54-TSOP II package is compatible with existing PCB layouts and automated assembly equipment, facilitating drop-in replacement or design reuse.

Why Choose AS4C64M8SA-7TCNTR?

The AS4C64M8SA-7TCNTR is positioned for designs requiring traditional parallel SDRAM with moderate performance specifications. It is well-suited for embedded systems, industrial controls, and consumer electronics where 133MHz operation and 512Mbit density meet functional requirements, and where the commercial temperature range and standard TSOP II package align with application constraints. The component offers value for legacy system support, production continuity, and designs targeting cost-sensitive markets where newer high-speed memory technologies are unnecessary.

Note that this component has an obsolete lifecycle status. Designers should contact Alliance Memory to confirm availability for new designs and discuss long-term supply options or alternative components for future production.

Get a Quote

Contact our sales team to request pricing and availability for the AS4C64M8SA-7TCNTR. Our technical support staff can also assist with integration questions, timing specifications, and recommendations for your specific application requirements.