AS4C8M32S-7TCN

The AS4C8M32S-7TCN from Alliance Memory, Inc. is a 256-megabit synchronous DRAM (SDRAM) organized as 8M x 32 bits. This parallel interface memory device operates at clock frequencies up to 143MHz with a fast 5.5ns access time, making it well-suited for embedded systems, networking equipment, and industrial applications requiring high-bandwidth volatile memory. With a standard 3V to 3.6V supply voltage and commercial temperature range operation, this SDRAM provides reliable data storage and retrieval for performance-critical designs.

Key Features

• High-Density Memory Architecture - 256Mbit capacity organized as 8 million words by 32 bits wide, providing substantial volatile storage for buffering, caching, and real-time data processing applications.
• Fast Synchronous Performance - 143MHz clock frequency with 5.5ns access time enables high-throughput data transfers synchronized to system clocks for efficient memory operations.
• Standard Parallel Interface - Parallel memory interface simplifies integration with microprocessors, DSPs, and FPGAs using conventional memory bus architectures.
• Low-Voltage CMOS Design - Operates on 3V to 3.6V supply, compatible with standard 3.3V logic systems for reduced power consumption compared to legacy 5V memory devices.
• Compact 86-TSOP II Package - 86-pin TSOP II surface-mount package (0.400" width) offers a space-efficient footprint for board-level integration.
• Commercial Temperature Range - Operates from 0°C to 70°C, suitable for standard indoor and controlled-environment applications.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main memory or high-speed cache in embedded processors and single-board computers where the 32-bit wide data bus matches common processor architectures and the 256Mbit capacity supports moderate-complexity applications.
• Networking and Telecommunications - The fast access time and synchronous operation make this memory ideal for packet buffering in routers, switches, and network interface cards where data throughput and low latency are essential for maintaining network performance.
• Industrial Control Equipment - Commercial temperature range and parallel interface suit programmable logic controllers (PLCs), HMIs, and motion control systems that require reliable memory for real-time data acquisition and control algorithm execution.
• Test and Measurement Instruments - High-speed data capture applications benefit from the 143MHz clock capability and wide 32-bit bus for storing waveforms, samples, and measurement data before processing or display.
• Video and Graphics Processing - Frame buffering and display controllers utilize the high bandwidth and substantial capacity for storing image data in systems with moderate resolution requirements.

Unique Advantages

• Proven SDRAM Technology: Synchronous DRAM architecture is well-established and widely supported by development tools, controllers, and reference designs, reducing design risk and development time.
• Drop-In Memory Expansion: Standard parallel interface and common pinout facilitate straightforward memory upgrades or replacements in existing designs without extensive redesign effort.
• Cost-Effective Capacity: 256Mbit density provides ample memory for many embedded applications at a competitive price point compared to higher-density or specialized memory types.
• Alliance Memory Reliability: Alliance Memory specializes in legacy and standard memory solutions with long-term availability commitments, reducing supply chain concerns for industrial and long-lifecycle products.
• Simplified Power Management: Single 3.3V supply voltage eliminates the need for multiple supply rails, simplifying power distribution and reducing BOM complexity.
• Active Lifecycle Status: Currently active in production, ensuring ongoing availability for new designs and sustained support for long-term projects.

Why Choose AS4C8M32S-7TCN?

The AS4C8M32S-7TCN is positioned as a reliable, cost-effective memory solution for embedded and industrial applications that require moderate capacity and proven technology. This SDRAM is ideal for designs prioritizing long-term availability, standard interfaces, and straightforward integration over cutting-edge performance. Engineers working on industrial equipment, legacy system upgrades, or commercial embedded products will appreciate the balance of capacity, speed, and vendor support.

For long-lifecycle projects where component availability and stable supply chains matter, Alliance Memory's focus on sustained production of standard memory devices provides confidence in ongoing support beyond initial design-in.

Ready to Integrate AS4C8M32S-7TCN Into Your Design?

Contact our sales team for pricing, availability, and technical support. Our engineers can assist with memory controller configuration, timing analysis, and system integration questions to ensure successful implementation in your application.