AS4C32M16SA-7TCN

The AS4C32M16SA-7TCN from Alliance Memory, Inc. is a 512Mbit synchronous DRAM (SDRAM) organized as 32M x 16 with a parallel interface. This volatile memory solution operates at 143MHz clock frequency and provides 5.4ns access time, making it suitable for applications requiring moderate-speed buffering and data storage. The device operates from a 3V to 3.6V supply and is rated for commercial temperature range operation from 0°C to 70°C.

Key Features

• Memory Configuration: 512Mbit total capacity organized as 32M words x 16 bits, providing flexible data width for embedded systems and controllers.
• Performance: 143MHz maximum clock frequency with 5.4ns access time and 2ns write cycle time, enabling efficient data throughput for buffering applications.
• Power Supply: Single 3V to 3.6V supply voltage simplifies power design and reduces component count in memory subsystems.
• Package: 54-pin TSOP II package (0.400", 10.16mm width) offers a compact footprint for space-constrained PCB layouts.
• Operating Range: Commercial temperature range (0°C to 70°C) supports indoor and controlled-environment applications.

Typical Applications

• Embedded Controllers: This SDRAM serves as working memory in microcontroller-based systems where the 32M x 16 organization matches common 16-bit processor architectures and provides sufficient capacity for program execution and data buffering.
• Consumer Electronics: The device provides display buffering and data storage in set-top boxes, digital TVs, and media players where moderate memory bandwidth and commercial temperature rating align with typical operating conditions.
• Telecommunications Equipment: The parallel interface and moderate access speed make this SDRAM suitable for packet buffering and data queuing in network switches and routers operating in controlled environments.
• Test and Measurement Instruments: The 512Mbit capacity supports data acquisition and waveform storage in benchtop instrumentation where the commercial temperature range matches typical lab conditions.
• Legacy System Maintenance: As an obsolete part, this SDRAM provides replacement memory for existing designs requiring pin-compatible components to extend product lifecycles without redesign.

Unique Advantages

• Standard SDRAM Architecture: Industry-standard synchronous DRAM interface simplifies design integration and allows use of established controller IP and software drivers.
• Single Power Rail: 3V to 3.6V operation eliminates need for multiple memory power supplies, reducing BOM cost and board complexity.
• Compact TSOP II Package: The 10.16mm-wide package provides good density while maintaining ease of PCB assembly compared to finer-pitch alternatives.
• 16-bit Data Width: Native 16-bit organization efficiently interfaces with 16-bit processors and DSPs without requiring additional width conversion logic.
• Moderate Speed Grade: The 143MHz clock rating balances performance with power consumption and signal integrity requirements in cost-sensitive applications.
• Alliance Memory Support: Manufacturer provides technical documentation and application support for integration assistance.

Why Choose AS4C32M16SA-7TCN?

This SDRAM is positioned for embedded systems and consumer applications requiring moderate memory capacity and bandwidth in the 3.3V power domain. The 32M x 16 organization and parallel interface make it well-suited for 16-bit microcontroller and processor architectures, while the commercial temperature rating targets cost-optimized designs in controlled environments. The TSOP II package provides proven assembly reliability and good thermal performance for mainstream applications.

Note that this part has obsolete lifecycle status, indicating it may be in limited production or approaching end-of-life. Engineers should verify availability for new designs and consider migration paths to current-generation memory products for long-term production requirements.

Get a Quote

For pricing, availability, and technical specifications on the AS4C32M16SA-7TCN, please contact our sales team. We can provide volume quotes, lead time information, and application support to help you integrate this SDRAM into your design.