AS4C4M32S-7TCNTR

The AS4C4M32S-7TCNTR from Alliance Memory is a 128Mbit synchronous DRAM organized as 4M x 32-bit, offering reliable parallel memory for embedded systems requiring moderate density and fast access times. With a 143MHz clock frequency and 5.5ns access time, this SDRAM provides the performance needed for data buffering, temporary storage, and processing applications in commercial temperature environments.

Key Features

• Memory Configuration - 128Mbit density organized as 4M x 32-bit words, providing flexible word-wide access for 32-bit processors and data paths.
• Performance - 143MHz clock frequency with 5.5ns access time delivers fast read/write operations, while 2ns write cycle time supports rapid data updates.
• Power Supply - Standard 3V to 3.6V voltage supply simplifies integration with common 3.3V logic families and reduces power management complexity.
• Package - 86-pin TSOP II package in 10.16mm width provides a space-efficient footprint for board layouts with established TSOP mounting processes.
• Temperature Range - 0°C to 70°C operating temperature supports commercial applications in controlled environments.

Typical Applications

• Embedded Computing - This SDRAM serves as main memory or cache for embedded processors in commercial equipment where 32-bit data width matches processor architectures and moderate density meets system requirements.
• Data Acquisition Systems - The parallel interface and fast access time enable buffering of sensor data streams, allowing systems to capture and temporarily store measurements before processing or transmission.
• Networking Equipment - Commercial routers and switches use this memory for packet buffering and routing table storage where the 128Mbit capacity and 143MHz speed support moderate throughput requirements.
• Test and Measurement Instruments - Benchtop equipment benefits from the SDRAM's ability to store waveforms, test patterns, and measurement results with quick read/write access for real-time display and analysis.

Unique Advantages

• Standard SDRAM Architecture: Industry-standard synchronous DRAM interface simplifies firmware development and allows reuse of existing memory controller designs.
• 32-bit Organization: Word-wide configuration reduces address complexity and improves efficiency when working with 32-bit processors or data buses.
• Established Package Type: TSOP II format leverages mature assembly processes and widely available socket options for prototyping and production.
• 3.3V Operation: Single supply voltage reduces power rail count and aligns with common logic levels in commercial embedded systems.
• Moderate Density Point: 128Mbit capacity fits applications requiring more than basic SRAM but less than high-density DDR solutions, optimizing cost for the application.

Why Choose AS4C4M32S-7TCNTR?

This SDRAM addresses commercial embedded applications where designers need proven synchronous memory technology with 32-bit organization. The 143MHz clock frequency and 5.5ns access provide adequate performance for data buffering, temporary storage, and processing tasks that don't require the complexity of DDR memory. The TSOP II package suits established PCB layouts and assembly processes.

Note that this component has an Obsolete lifecycle status. Engineers should verify availability with Alliance Memory and consider this factor in product planning. For new designs requiring long-term availability, consult with the manufacturer regarding current product recommendations and migration paths.

Get Started

Contact our sales team for pricing, availability information, and technical support for the AS4C4M32S-7TCNTR. Our engineers can assist with integration questions and help determine if this memory solution fits your application requirements.