AS4C8M16SA-7TCN

The AS4C8M16SA-7TCN is a 128-megabit synchronous dynamic random access memory (SDRAM) from Alliance Memory, Inc. Organized as 8M x 16, this parallel interface DRAM delivers reliable volatile memory storage with a 143MHz clock frequency and 5.4ns access time. Ideal for embedded systems, industrial equipment, and legacy system upgrades, this SDRAM provides cost-effective memory expansion with standard 3.3V operation in a compact 54-TSOP II package.

Key Features

• Memory Architecture - 128-megabit capacity organized as 8 million words by 16 bits, providing flexible data width for various system requirements.
• Performance - 143MHz clock frequency with 5.4ns access time and 14ns write cycle time enables responsive system performance for moderate-speed applications.
• Power Supply - Standard 3.3V operation (3V to 3.6V range) simplifies power delivery and ensures compatibility with common embedded system voltage rails.
• Interface - Parallel SDRAM interface provides straightforward integration with processors and controllers using traditional memory bus architectures.
• Package - 54-pin TSOP II package with 10.16mm width offers space-efficient surface mount design for compact board layouts.
• Temperature Range - Commercial operating range of 0°C to 70°C suits standard indoor environments and consumer electronics applications.

Typical Applications

• Embedded Computing - This SDRAM serves as main system memory in embedded controllers and single-board computers where moderate capacity and performance meet application requirements while maintaining cost efficiency.
• Industrial Equipment - Provides data buffering and program execution space for industrial control systems, HMIs, and automation equipment operating in controlled temperature environments.
• Legacy System Support - Enables maintenance and upgrades of existing designs originally built around parallel SDRAM technology, ensuring long-term availability for mature product lines.
• Consumer Electronics - Supplies working memory for set-top boxes, digital displays, and multimedia devices where the 128Mbit capacity and 3.3V operation align with system specifications.
• Networking Equipment - Functions as packet buffer or lookup table storage in network switches, routers, and communication devices requiring fast random access to moderate data volumes.

Unique Advantages

• Standard SDRAM Architecture: Eliminates custom interface development by using widely-supported parallel SDRAM protocols compatible with existing controller IP and processor memory interfaces.
• Single 3.3V Supply Operation: Reduces BOM cost and simplifies power distribution by operating from one common voltage rail without requiring separate I/O voltage supplies.
• Compact TSOP II Footprint: Minimizes board space consumption while maintaining surface mount manufacturability with standard pick-and-place equipment.
• Active Lifecycle Status: Provides supply chain confidence with current production availability, reducing obsolescence risk for new designs and ongoing production requirements.
• Commercial Temperature Grade: Delivers cost savings for applications operating in controlled environments where extended temperature qualification is unnecessary.
• 14ns Write Cycle Time: Supports efficient data storage operations in systems with moderate throughput requirements, balancing performance with power consumption.

Why Choose AS4C8M16SA-7TCN?

The AS4C8M16SA-7TCN addresses the needs of embedded system designers requiring reliable parallel SDRAM with proven technology and straightforward integration. Its 8M x 16 organization matches common memory interface widths while the 143MHz clock and 5.4ns access time provide adequate performance for control, buffering, and processing tasks in commercial temperature environments. The single 3.3V power supply and standard TSOP II package reduce design complexity and assembly costs.

This SDRAM is particularly well-suited for cost-sensitive applications, legacy system maintenance, and designs leveraging existing parallel memory controller infrastructure. With active production status from Alliance Memory, the AS4C8M16SA-7TCN delivers long-term availability confidence for both new designs and ongoing manufacturing requirements.

Get Started

Contact our sales team to request a quote for the AS4C8M16SA-7TCN or to discuss your memory requirements. Our technical support staff can assist with integration guidance, availability information, and volume pricing.