AS4C8M16S-7BCN

The AS4C8M16S-7BCN from Alliance Memory is a 128Mbit synchronous dynamic random access memory (SDRAM) configured as 8M x 16. Built on proven SDRAM technology, this memory device delivers reliable parallel interface access for embedded systems requiring volatile data storage. With a 143MHz clock frequency and 5.4ns access time, it provides responsive performance for applications demanding fast read/write cycles in commercial temperature environments.

Key Features

• Memory Organization - 8M x 16 architecture provides 128Mbit total capacity optimized for 16-bit data bus applications.
• Performance Specifications - 143MHz clock frequency with 5.4ns access time and 2ns write cycle time delivers fast data throughput for time-sensitive operations.
• Power Supply - Operates on 3V to 3.6V supply voltage, compatible with standard 3.3V systems and reducing power consumption compared to 5V alternatives.
• Parallel Interface - Direct parallel connection simplifies integration with microprocessors, microcontrollers, and FPGAs without requiring serial protocol overhead.
• Temperature Range - Commercial temperature rating of 0°C to 70°C supports standard indoor applications and consumer electronics.
• Package Format - 54-pin TFBGA (8mm x 8mm) offers compact footprint for space-constrained board designs.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main memory or buffer storage in single-board computers and embedded controllers where the parallel interface integrates directly with processor memory buses for efficient data access.
• Consumer Electronics - The device provides working memory for set-top boxes, digital cameras, and home automation hubs operating in controlled temperature environments where commercial-grade specifications are sufficient.
• Networking Equipment - Functions as packet buffer memory in routers and switches where the 128Mbit capacity handles temporary data storage during packet processing and routing operations.
• Data Acquisition Systems - Stores captured data from sensors and instruments before transfer to permanent storage, with fast access times enabling high-speed sampling applications.

Unique Advantages

• Proven SDRAM Architecture: Mature technology ensures stability and predictable performance for designs requiring reliable volatile memory without bleeding-edge complexity.
• Parallel Interface Simplicity: Direct memory bus connection eliminates protocol conversion overhead, reducing latency and simplifying firmware development compared to serial memory alternatives.
• Standard 3.3V Operation: Compatibility with ubiquitous 3.3V power rails avoids the need for additional voltage regulators or level shifters in most embedded designs.
• Compact TFBGA Packaging: Small 8mm x 8mm footprint conserves valuable PCB area while maintaining adequate pin count for the parallel interface.
• Fast Access Performance: 5.4ns access time supports applications requiring responsive memory reads without introducing wait states in many system architectures.

Why Choose AS4C8M16S-7BCN?

This SDRAM is positioned for embedded systems designers who need straightforward parallel memory integration with predictable performance characteristics. The 8M x 16 organization aligns well with 16-bit processor architectures, while the 143MHz clock support accommodates moderate-speed system buses. Alliance Memory's focus on mature memory technologies provides a stable supply source for designs prioritizing proven solutions over cutting-edge performance.

The device is well-suited for commercial applications where operating temperature requirements stay within 0°C to 70°C bounds. While the commercial temperature range limits use in extreme environments, it enables cost-effective memory solutions for consumer products, indoor equipment, and climate-controlled installations. Designers seeking extended temperature or automotive-qualified alternatives should evaluate other product families.

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