AS4C8M32S-7TCNTR
| Part Description |
IC DRAM 256MBIT PAR 86TSOP II |
|---|---|
| Quantity | 828 Available (as of May 5, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Alliance Memory, Inc. |
| Manufacturing Status | Active |
| Manufacturer Standard Lead Time | 20 Weeks |
| Datasheet |
Specifications & Environmental
| Device Package | 86-TSOP II | Memory Format | DRAM | Technology | SDRAM | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 256 Mbit | Access Time | 5.5 ns | Grade | Commercial | ||
| Clock Frequency | 143 MHz | Voltage | 3V ~ 3.6V | Memory Type | Volatile | ||
| Operating Temperature | 0°C ~ 70°C (TA) | Write Cycle Time Word Page | N/A | Packaging | 86-TFSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | Parallel | Memory Organization | 8M x 32 | ||
| 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 AS4C8M32S-7TCNTR - 256Mbit Parallel SDRAM
The AS4C8M32S-7TCNTR is a high-performance 256Mbit synchronous DRAM from Alliance Memory, Inc., configured as 8M x 32 for parallel interface applications. This SDRAM operates at clock frequencies up to 143MHz with a 5.5ns access time, making it ideal for embedded systems, industrial equipment, and communication devices requiring reliable volatile memory with a wide operating voltage range of 3V to 3.6V.
Key Features
- Memory Architecture - 256Mbit total capacity organized as 8M words x 32 bits, providing efficient data access for 32-bit bus architectures.
- Performance Specifications - Operates at clock frequencies up to 143MHz with 5.5ns access time, delivering responsive memory performance for time-sensitive applications.
- Power and Voltage - 3V to 3.6V supply voltage range ensures compatibility with common industrial and embedded power systems.
- Operating Temperature Range - Commercial temperature range of 0°C to 70°C (TA) supports standard operating environments.
- Package Format - Available in 86-pin TSOP II (0.400", 10.16mm width) package, a space-efficient surface-mount format.
- Interface Type - Parallel memory interface with synchronous SDRAM technology for straightforward integration with processors and controllers.
Typical Applications
- Embedded Computing Systems - This SDRAM provides main system memory for embedded processors and microcontrollers where the 8M x 32 organization matches common 32-bit bus architectures, reducing glue logic and simplifying board design.
- Industrial Control Equipment - The commercial temperature rating and parallel interface make this memory suitable for PLCs, motion controllers, and industrial HMIs that require reliable volatile memory for program execution and data buffering.
- Networking and Communication Devices - With 143MHz operation and 256Mbit capacity, this SDRAM serves as buffer memory in routers, switches, and communication modules where fast data throughput is essential.
- Test and Measurement Instruments - The synchronous architecture and moderate speed specifications make this memory appropriate for oscilloscopes, data loggers, and test equipment requiring temporary data storage.
- Legacy System Upgrades - As an active production component, this SDRAM supports maintenance and upgrades of existing designs requiring parallel SDRAM with similar specifications.
Unique Advantages
- Simplified 32-bit Integration: The 8M x 32 organization directly matches 32-bit processor buses, eliminating the need for multiple memory chips or complex memory interleaving.
- Standard SDRAM Interface: Uses widely-supported synchronous DRAM protocols, reducing software development time and leveraging established memory controller IP.
- Flexible Voltage Operation: The 3V to 3.6V supply range accommodates both 3.3V and battery-backed systems without requiring level shifters.
- Active Lifecycle Status: Currently in active production, ensuring long-term availability for new designs and ongoing manufacturing support.
- Surface-Mount Package: The TSOP II format supports automated assembly and fits compact board layouts while maintaining reliable connections.
- Commercial Temperature Grade: 0°C to 70°C operation covers the majority of indoor and temperature-controlled environments at lower cost than extended-range parts.
Why Choose AS4C8M32S-7TCNTR?
The AS4C8M32S-7TCNTR offers a balanced combination of capacity, performance, and standard interface technology for commercial embedded applications. Its 8M x 32 organization aligns naturally with 32-bit processor architectures, while the parallel SDRAM interface provides a proven, well-understood memory solution. Engineers seeking reliable volatile memory with active production status and straightforward integration will find this component suitable for industrial controls, embedded computing, and communication equipment.
For designs requiring commercial-grade memory with moderate speed requirements and long-term availability, the AS4C8M32S-7TCNTR delivers practical performance without the complexity of newer memory technologies.
Get Started with AS4C8M32S-7TCNTR
Ready to integrate the AS4C8M32S-7TCNTR into your next design? Contact our sales team for pricing, availability, and technical support. We can help you evaluate this SDRAM for your specific application requirements and provide guidance on board layout and memory controller configuration.
