AS4C8M32S-6TIN

IC DRAM 256MBIT PAR 86TSOP II
Part Description

IC DRAM 256MBIT PAR 86TSOP II

Quantity 91 Available (as of May 4, 2026)
Product CategoryMemory
ManufacturerAlliance Memory, Inc.
Manufacturing StatusActive
Manufacturer Standard Lead Time20 Weeks
Datasheet

Specifications & Environmental

Device Package86-TSOP IIMemory FormatDRAMTechnologySDRAM
Memory Size256 MbitAccess Time5.5 nsGradeIndustrial
Clock Frequency166 MHzVoltage3V ~ 3.6VMemory TypeVolatile
Operating Temperature-40°C ~ 85°C (TA)Write Cycle Time Word PageN/APackaging86-TFSOP (0.400", 10.16mm Width)
Mounting MethodVolatileMemory InterfaceParallelMemory Organization8M x 32
Moisture Sensitivity Level3 (168 Hours)RoHS ComplianceROHS3 CompliantREACH ComplianceREACH Unaffected
QualificationN/AECCNEAR99HTS Code8542.32.0024

Overview of AS4C8M32S-6TIN - 256Mbit Synchronous DRAM

The AS4C8M32S-6TIN from Alliance Memory is a 256Mbit synchronous DRAM organized as 8M x 32, designed for applications requiring reliable parallel memory interfaces. This SDRAM operates at 166MHz clock frequency with 5.5ns access time, making it suitable for embedded systems, industrial controllers, and networking equipment. Built on proven SDRAM technology, this device provides stable memory performance across industrial temperature ranges.

Key Features

  • Memory Configuration: 256Mbit density in an 8M x 32 organization provides flexible data width for 32-bit bus architectures commonly found in industrial processors and FPGAs.
  • Performance: 166MHz clock frequency with 5.5ns access time delivers responsive memory throughput for real-time control applications and data buffering tasks.
  • Power Supply: 3V to 3.6V operating voltage aligns with standard 3.3V logic levels, simplifying integration into existing embedded designs without voltage translation.
  • Temperature Range: -40°C to 85°C operating range ensures reliable operation in industrial environments subject to temperature variation.
  • Package: 86-pin TSOP II package in 10.16mm width offers a compact footprint while maintaining compatibility with standard PCB assembly processes.

Typical Applications

  • Industrial Automation: This SDRAM serves as main memory or buffer RAM in PLCs, industrial PCs, and HMI controllers where the extended temperature range ensures consistent operation across factory floor conditions.
  • Networking Equipment: The parallel interface and 32-bit organization make this memory suitable for packet buffering in routers and switches where predictable latency and stable performance are required.
  • Embedded Computing: Integration into single-board computers and embedded modules benefits from the standard SDRAM interface and industrial temperature capability for applications in kiosks, point-of-sale terminals, and control systems.
  • Test and Measurement: Data acquisition systems and instrumentation leverage this SDRAM for temporary storage of captured data before processing or transmission to host systems.

Unique Advantages

  • Standard SDRAM Interface: Compatible with widely available memory controllers in microprocessors and FPGAs, reducing development time and leveraging established reference designs.
  • Industrial Temperature Rating: Extends operational reliability beyond commercial-grade components, reducing field failures in environments with temperature fluctuations.
  • Compact 32-bit Organization: Matches common embedded processor bus widths, minimizing glue logic and board space compared to multiple narrower memory devices.
  • Established Technology: SDRAM architecture provides well-understood timing characteristics and proven compatibility with legacy designs requiring long-term component availability.
  • 3.3V Operation: Eliminates the need for voltage level shifters when interfacing with standard 3.3V logic, simplifying power distribution and reducing BOM cost.

Why Choose AS4C8M32S-6TIN?

This SDRAM is positioned for industrial and embedded applications where standard synchronous DRAM functionality must operate reliably across extended temperature ranges. The 32-bit organization and parallel interface make it particularly well-suited for legacy system upgrades or new designs based on processors and controllers with native SDRAM support. With an active lifecycle status, this component offers a stable supply option for products requiring multi-year availability.

For designs prioritizing proven SDRAM technology with industrial temperature capability and straightforward integration into 32-bit bus architectures, the AS4C8M32S-6TIN delivers practical memory performance without requiring specialized controllers or complex initialization sequences.

Get a Quote Today

Contact our sales team to request pricing and lead times for the AS4C8M32S-6TIN. Our application engineers can provide technical support to help integrate this SDRAM into your embedded system design.

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