AS4C4M32S-6TCN

The AS4C4M32S-6TCN from Alliance Memory is a 128-megabit synchronous dynamic RAM (SDRAM) device organized as 4M x 32, delivering high-speed parallel memory access for embedded systems and computing platforms. With a 166MHz clock frequency and 5.5ns access time, this SDRAM provides reliable data storage and retrieval for applications requiring fast, cost-effective volatile memory solutions.

Key Features

• Memory Architecture - 128Mbit capacity organized as 4M x 32, providing flexible word-width access for 32-bit data bus architectures commonly found in embedded processors and microcontrollers.
• Performance Specifications - 166MHz clock frequency with 5.5ns access time and 2ns write cycle time enable rapid data throughput for time-sensitive applications requiring consistent memory performance.
• Power Supply - Operates on standard 3V to 3.6V supply voltage, compatible with mainstream 3.3V logic systems and reducing power management complexity in mixed-voltage designs.
• Operating Temperature Range - Commercial grade 0°C to 70°C (TA) temperature range suits standard indoor operating environments and typical commercial electronic equipment.
• Package Configuration - 86-pin TSOP II package with 10.16mm (0.400") width provides a space-efficient footprint for PCB layouts while maintaining standard through-hole compatibility.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main system memory for embedded processors and microcontrollers in commercial equipment, where the 4M x 32 organization matches common 32-bit data bus widths and the commercial temperature range suits indoor installations.
• Telecommunications Equipment - Provides buffer memory for routers, switches, and communication devices operating in controlled environments, where the parallel interface and 166MHz clock support rapid packet processing and data buffering requirements.
• Consumer Electronics - Functions as working memory in set-top boxes, digital displays, and multimedia devices where cost-effective SDRAM with standard voltage operation simplifies design and reduces component costs.
• Test and Measurement Instruments - Supplies data acquisition memory for bench instruments and commercial test equipment, where the 128Mbit capacity and fast access times enable real-time signal capture and processing in laboratory conditions.

Unique Advantages

• Standard SDRAM Interface: Industry-standard synchronous DRAM protocol ensures broad compatibility with existing memory controllers and simplifies design reuse across multiple platforms.
• Established Technology Node: Mature SDRAM technology delivers proven reliability and cost-effectiveness for applications where DDR migration is unnecessary or cost-prohibitive.
• 32-Bit Word Width: Native 4M x 32 organization eliminates the need for multiple narrower devices, reducing PCB routing complexity and lowering BOM count in 32-bit architectures.
• Compact TSOP II Package: Space-efficient 86-pin package offers high pin density while maintaining manufacturability and serviceability compared to fine-pitch BGA alternatives.
• 3.3V Operation: Single-supply 3V to 3.6V operation integrates seamlessly with legacy 3.3V logic families and reduces power supply design complexity.

Why Choose AS4C4M32S-6TCN?

The AS4C4M32S-6TCN is positioned for commercial-grade embedded applications requiring proven SDRAM technology with parallel access and 32-bit word width. Design engineers working with established embedded platforms will appreciate the standard SDRAM interface and straightforward integration into existing memory subsystems without DDR-specific design considerations.

Please note that this product carries an Obsolete lifecycle status. For new designs, consult with Alliance Memory regarding current-generation alternatives or long-term availability programs that may support your product lifecycle requirements.

Request a Quote

Contact our sales team to discuss availability, pricing, and technical support for the AS4C4M32S-6TCN. Our engineers can help you evaluate whether this device meets your design requirements or recommend alternative memory solutions aligned with your project timeline and lifecycle needs.