AS4C16M16D1A-5TCNTR
| Part Description |
IC DRAM 256MBIT PAR 66TSOP II |
|---|---|
| Quantity | 309 Available (as of May 5, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Alliance Memory, Inc. |
| Manufacturing Status | Active |
| Manufacturer Standard Lead Time | 8 Weeks |
| Datasheet |
Specifications & Environmental
| Device Package | 66-TSOP II | Memory Format | DRAM | Technology | SDRAM - DDR | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 256 Mbit | Access Time | 700 ps | Grade | Commercial | ||
| Clock Frequency | 200 MHz | Voltage | 2.3V ~ 2.7V | Memory Type | Volatile | ||
| Operating Temperature | 0°C ~ 70°C (TA) | Write Cycle Time Word Page | 15 ns | Packaging | 66-TSSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | Parallel | Memory Organization | 16M x 16 | ||
| Moisture Sensitivity Level | 3 (168 Hours) | RoHS Compliance | ROHS3 Compliant | REACH Compliance | REACH Unaffected | ||
| Qualification | N/A | ECCN | 3A991B2A | HTS Code | 8542.32.0024 |
Overview of AS4C16M16D1A-5TCNTR - 256Mbit DDR1 SDRAM
The AS4C16M16D1A-5TCNTR from Alliance Memory, Inc. is a 256-megabit DDR1 SDRAM organized as 16M x 16, delivering reliable high-speed memory for embedded systems and computing applications. Operating at 200MHz with a 7ns access time, this device provides the performance needed for data-intensive applications while maintaining broad compatibility with standard DDR1 interfaces. This parallel-interface DRAM is well-suited for industrial, consumer, and networking equipment requiring dependable volatile memory.
Key Features
- 256Mbit Memory Capacity - Organized as 16M x 16, providing sufficient memory for embedded controllers, networking devices, and consumer electronics applications.
- DDR1 SDRAM Technology - Synchronous double data rate architecture enables efficient data transfer at 200MHz clock frequency with 7ns access time for responsive system performance.
- Standard Parallel Interface - Compatible with conventional DDR1 memory controllers, simplifying integration into existing designs without custom interface logic.
- 2.5V Operation - Operates on 2.3V to 2.7V supply voltage, aligning with standard DDR1 power requirements for straightforward power supply design.
- 66-TSOP II Package - Industry-standard 66-pin TSOP II (0.400", 10.16mm width) surface-mount package facilitates PCB layout and automated assembly.
- Commercial Temperature Range - Rated for 0°C to 70°C operation, suitable for standard indoor and climate-controlled environments.
Typical Applications
- Industrial Control Systems - This DDR1 SDRAM provides working memory for PLCs, process controllers, and HMI panels where the commercial temperature range suits climate-controlled factory environments and the 200MHz performance handles real-time control tasks.
- Network Infrastructure - Serves as buffer memory in managed switches, routers, and wireless access points where the 256Mbit capacity and parallel interface support packet processing and routing tables in commercial-grade networking equipment.
- Consumer Electronics - Functions as system memory in set-top boxes, digital media players, and home automation hubs where the standard DDR1 interface and 2.5V operation integrate with common application processors and SoCs.
- Embedded Computing - Provides main memory for single-board computers and embedded modules in kiosks, point-of-sale terminals, and information displays where the 7ns access time supports responsive user interfaces.
- Legacy System Support - Offers drop-in memory for equipment designed around DDR1 technology, ensuring continued availability for maintenance, repair, and field upgrades of established product lines.
Unique Advantages
- Proven DDR1 Architecture: Leverages mature SDRAM technology with extensive ecosystem support, reducing integration risk and simplifying validation compared to newer memory technologies.
- Broad Controller Compatibility: Works with standard DDR1 memory controllers from major silicon vendors, avoiding the need for custom driver development or interface adaptation.
- Reliable Supply from Alliance Memory: Alliance Memory specializes in maintaining availability of established memory technologies, providing a dependable source for ongoing production and long-term support.
- Simplified Power Management: Single 2.5V supply voltage reduces power rail complexity and simplifies regulator design compared to multi-voltage memory solutions.
- Active Lifecycle Status: Currently active in production, ensuring consistent availability for new designs and ongoing manufacturing runs.
- Standard Package Footprint: The 66-TSOP II form factor matches industry conventions, enabling use of proven PCB layouts and facilitating second-source options if design requirements change.
Why Choose AS4C16M16D1A-5TCNTR?
The AS4C16M16D1A-5TCNTR is an ideal memory solution for designs requiring reliable DDR1 SDRAM with standard commercial-grade specifications. Engineers working on industrial controls, networking equipment, or embedded systems benefit from the device's proven architecture, broad compatibility, and straightforward integration. The combination of 200MHz performance, 7ns access time, and industry-standard packaging makes this part particularly well-suited for applications that prioritize design stability, long-term availability, and compatibility with existing DDR1-based platforms.
For designs requiring established memory technology with dependable supply, Alliance Memory's focus on supporting mature DRAM families provides long-term confidence in component availability. The AS4C16M16D1A-5TCNTR delivers the performance and capacity needed for mainstream embedded applications while maintaining the simplicity and compatibility advantages of DDR1 SDRAM.
Contact Us for Pricing and Availability
To request a quote for the AS4C16M16D1A-5TCNTR or discuss volume pricing for your project, please contact our sales team. We can provide technical support, sample quantities, and delivery schedules tailored to your development timeline and production requirements.
