AS4C4M32S-7TCN

The AS4C4M32S-7TCN is a 128-megabit synchronous dynamic random access memory (SDRAM) device organized as 4M x 32 bits. This parallel interface SDRAM operates at clock frequencies up to 143MHz with a 5.5ns access time, providing reliable volatile memory for embedded systems and industrial computing applications. Designed for operation in the 0°C to 70°C commercial temperature range, this memory solution delivers dependable performance for systems requiring moderate-density parallel memory.

Key Features

• Memory Architecture - 128-megabit capacity with 4M x 32-bit organization provides flexible addressing for 32-bit data bus systems.
• SDRAM Technology - Synchronous operation at up to 143MHz clock frequency enables efficient data transfer synchronized with system clocks.
• Fast Access Time - 5.5ns access time and 2ns write cycle time support responsive read and write operations for time-sensitive applications.
• Power Supply - Operates on standard 3V to 3.6V supply voltage, compatible with common embedded system power rails.
• Package - Available in 86-pin TSOP II (10.16mm width) surface-mount package for space-efficient PCB layouts.
• Temperature Range - Commercial grade 0°C to 70°C operating range suits standard indoor and climate-controlled environments.

Typical Applications

• Embedded Computing - This SDRAM provides main system memory for microprocessors and microcontrollers in embedded designs where 32-bit parallel interfaces are preferred over serial memory buses.
• Industrial Control Systems - The commercial temperature range and parallel interface make this memory suitable for PLCs and industrial controllers operating in climate-controlled facilities.
• Test and Measurement Equipment - Fast access times support data buffering and temporary storage in instruments that require quick data capture and processing cycles.
• Legacy System Support - As an obsolete component, this SDRAM serves as a replacement part for maintaining and repairing existing systems designed with parallel SDRAM architecture.

Unique Advantages

• Parallel Interface Compatibility: Direct drop-in solution for designs requiring 32-bit parallel SDRAM, eliminating the need for interface conversion logic.
• Synchronized Operation: Clock-based synchronous design simplifies timing coordination with host processors and reduces timing margin complexity.
• Moderate Density: 128Mbit capacity balances memory size with cost for applications that don't require high-density memory solutions.
• Standard Voltage Operation: 3.3V supply compatibility integrates seamlessly with existing 3.3V logic systems without level shifting.
• Established Technology: Mature SDRAM architecture offers well-understood design characteristics and predictable behavior for system integration.

Why Choose AS4C4M32S-7TCN?

The AS4C4M32S-7TCN serves designers maintaining or extending the lifespan of systems built around parallel SDRAM architectures. With its 4M x 32 organization and 143MHz operation, this memory provides a balance of capacity and performance for commercial-grade applications. The 86-pin TSOP II package offers a compact footprint for space-constrained designs.

Note that this component is marked as obsolete. For new designs, engineers should evaluate current-generation memory technologies. For existing systems requiring this specific part, this SDRAM enables continued operation and field repairs of deployed equipment.

Get a Quote

Contact our sales team for pricing, availability, and technical support for the AS4C4M32S-7TCN. Our component specialists can help you source this obsolete part or recommend suitable alternatives for your application requirements.