AS4C32M8SA-6TIN
| Part Description |
IC DRAM 256MBIT PAR 54TSOP II |
|---|---|
| Quantity | 740 Available (as of May 5, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Alliance Memory, Inc. |
| Manufacturing Status | Active |
| Manufacturer Standard Lead Time | 10 Weeks |
| Datasheet |
Specifications & Environmental
| Device Package | 54-TSOP II | Memory Format | DRAM | Technology | SDRAM | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 256 Mbit | Access Time | 5.5 ns | Grade | Industrial | ||
| Clock Frequency | 166 MHz | Voltage | 3V ~ 3.6V | Memory Type | Volatile | ||
| Operating Temperature | -40°C ~ 85°C (TA) | Write Cycle Time Word Page | N/A | Packaging | 54-TSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | Parallel | Memory Organization | 32M x 8 | ||
| Moisture Sensitivity Level | 3 (168 Hours) | RoHS Compliance | ROHS3 Compliant | REACH Compliance | REACH Unaffected | ||
| Qualification | N/A | ECCN | EAR99 | HTS Code | 8542.32.0024 |
Overview of AS4C32M8SA-6TIN - 256Mb SDRAM Parallel DRAM IC
The AS4C32M8SA-6TIN from Alliance Memory is a 256-megabit synchronous dynamic random access memory (SDRAM) IC configured as 32M x 8 in a 54-pin TSOP II package. This volatile memory device operates at a clock frequency of 166 MHz with a fast 5.5ns access time, making it ideal for embedded systems, industrial equipment, and consumer electronics requiring reliable, high-speed data storage. Built on proven SDRAM technology, this component delivers dependable performance across an industrial temperature range from -40°C to 85°C.
Key Features
- Memory Organization - 32M x 8 configuration provides 256 megabits of SDRAM storage in a parallel interface, offering straightforward integration with microcontrollers and processors that require byte-wide memory access.
- Performance - 166 MHz clock frequency with 5.5ns access time ensures fast read/write operations suitable for real-time data processing and buffering applications.
- Power Supply - Operates on standard 3V to 3.6V supply voltage, compatible with most modern 3.3V logic systems without requiring voltage translation.
- Temperature Range - -40°C to 85°C operating range qualifies this SDRAM for industrial environments where extended temperature tolerance is essential for reliable operation.
- Package - 54-pin TSOP II package with 10.16mm width offers a compact footprint for space-constrained PCB designs while maintaining standard industry pinout.
Typical Applications
- Industrial Automation - This SDRAM provides reliable memory buffering for programmable logic controllers (PLCs), human-machine interfaces (HMIs), and industrial PCs where the extended temperature range ensures consistent operation in factory floor environments with temperature fluctuations.
- Embedded Computing Systems - The 32M x 8 organization and parallel interface make this SDRAM well-suited for embedded processors and microcontrollers requiring main system memory or large data buffers in applications like point-of-sale terminals, kiosks, and control systems.
- Networking Equipment - Fast 166 MHz operation and 256Mb capacity support packet buffering and data routing in network switches, routers, and communication infrastructure where high-speed temporary storage is needed for data processing.
- Test and Measurement Instruments - The combination of fast access time and industrial temperature rating makes this memory suitable for oscilloscopes, analyzers, and data acquisition systems that capture and process signals in real-time.
- Consumer Electronics - This SDRAM can serve as main memory or frame buffer in set-top boxes, digital displays, and entertainment systems where moderate capacity and reliable operation at standard 3.3V supply simplify design.
Unique Advantages
- Simplified Power Design: Single 3V to 3.6V supply eliminates the need for multiple voltage rails, reducing BOM cost and board complexity in 3.3V systems.
- Extended Temperature Reliability: Industrial-grade -40°C to 85°C operating range provides design margin for equipment deployed in harsh environments without requiring temperature management overhead.
- Proven SDRAM Architecture: Mature synchronous DRAM technology offers predictable timing characteristics and broad ecosystem support, simplifying firmware development and reducing integration risk.
- Fast Access Performance: 5.5ns access time at 166 MHz clock frequency enables real-time data processing in applications where memory bandwidth directly impacts system responsiveness.
- Standard Parallel Interface: Straightforward parallel memory interface integrates easily with legacy and current-generation processors without requiring complex protocol implementation.
- Compact TSOP II Packaging: Industry-standard 54-pin TSOP II footprint balances pin count requirements with board space efficiency for moderate-density memory applications.
Why Choose AS4C32M8SA-6TIN?
The AS4C32M8SA-6TIN represents a reliable choice for designs requiring moderate-capacity volatile memory with industrial temperature tolerance and straightforward integration. Engineers developing embedded systems, industrial controls, or networking equipment will appreciate the combination of proven SDRAM technology, fast 166 MHz operation, and wide temperature range that reduces qualification risk and supports deployment in demanding environments.
This memory IC is particularly well-suited for applications where 256Mb capacity, byte-wide parallel access, and 3.3V operation align with system architecture requirements. The active lifecycle status ensures ongoing availability for new designs and long-term production support.
Get a Quote
Contact our sales team to discuss pricing, availability, and volume options for the AS4C32M8SA-6TIN. We can provide technical support to help you evaluate whether this SDRAM meets your application requirements and assist with integration planning for your next design.
