AS4C4M32S-7BCNTR

The AS4C4M32S-7BCNTR from Alliance Memory is a 128-megabit synchronous dynamic RAM offering a 4M x 32-bit memory organization. Built on proven SDRAM technology, this memory component operates at 143MHz clock frequency with a 5.4ns access time, making it well-suited for embedded systems, industrial controls, and consumer electronics requiring reliable parallel memory with moderate speed requirements.

Key Features

• Memory Architecture: 128Mbit capacity organized as 4 million words by 32 bits, providing flexible data width for 32-bit processor systems and embedded applications.
• Performance: 143MHz clock frequency with 5.4ns access time and 2ns write cycle time delivers responsive memory operation for real-time control and data buffering tasks.
• Power Supply: Operates from 3V to 3.6V supply voltage, compatible with standard 3.3V logic families commonly used in industrial and embedded designs.
• Package: 90-pin TFBGA (Thin Fine-Pitch Ball Grid Array) measuring 8mm x 13mm provides a compact footprint ideal for space-constrained PCB layouts.
• Temperature Range: Rated for 0°C to 70°C commercial temperature range, suitable for indoor equipment and standard operating environments.
• Lifecycle: Active production status ensures ongoing availability for new designs and long-term product support.

Typical Applications

• Industrial Control Systems: This SDRAM serves as working memory in programmable logic controllers (PLCs), human-machine interfaces (HMIs), and process control equipment where the 0°C to 70°C operating range matches typical industrial cabinet environments.
• Consumer Electronics: The compact 90-TFBGA package and parallel interface make this memory suitable for set-top boxes, digital video recorders, and multimedia devices requiring cost-effective memory buffering.
• Embedded Computing: 32-bit data width aligns naturally with embedded processors in point-of-sale terminals, kiosks, and information displays where moderate memory capacity meets system requirements.
• Networking Equipment: Parallel SDRAM provides packet buffering and routing table storage in switches, routers, and gateway devices operating in climate-controlled network closets.
• Test and Measurement: Reliable memory operation supports data acquisition systems and benchtop instruments where the commercial temperature rating matches laboratory conditions.

Unique Advantages

• Simplified BOM Management: Active production status from Alliance Memory reduces supply chain risk compared to obsolete or end-of-life memory components.
• Proven SDRAM Technology: Mature synchronous DRAM architecture offers predictable performance characteristics and extensive design resources for rapid integration.
• Space-Efficient Design: The 8mm x 13mm TFBGA footprint conserves PCB area compared to larger packages, enabling more compact product form factors.
• Parallel Interface Compatibility: Direct memory interface eliminates the need for serial-to-parallel conversion logic, simplifying hardware design and reducing component count.
• Standard Voltage Operation: 3.3V supply voltage matches widely-used logic levels, avoiding the need for additional voltage regulators or level shifters.
• Commercial Temperature Rating: 0°C to 70°C range covers the vast majority of indoor applications without the cost premium of extended or automotive temperature grades.

Why Choose AS4C4M32S-7BCNTR?

The AS4C4M32S-7BCNTR represents a practical memory solution for designs requiring moderate capacity, proven technology, and reliable availability. Its 4M x 32 organization matches common embedded processor architectures, while the compact TFBGA package supports modern miniaturization trends. Alliance Memory's active production commitment provides supply continuity for both new designs and ongoing production.

For applications where commercial temperature range suffices and parallel memory interface simplifies system architecture, this SDRAM delivers dependable performance without unnecessary feature overhead or qualification costs.

Get a Quote

Contact our sales team to discuss pricing, lead times, and volume availability for the AS4C4M32S-7BCNTR. Our applications engineers can assist with integration questions and provide technical resources to accelerate your design process.