IS42S16800F-7BL

The IS42S16800F-7BL is a 128-megabit synchronous dynamic random access memory (SDRAM) device from ISSI, Integrated Silicon Solution Inc. Built on proven SDRAM technology, this parallel-interface memory chip delivers reliable high-speed data storage in a compact 54-pin TFBGA package. With 8M x 16 organization and 143 MHz clock frequency support, it serves embedded systems, consumer electronics, and industrial applications requiring moderate-density volatile memory with straightforward integration.

Key Features

• Memory Architecture - 128-megabit capacity organized as 8M words by 16 bits, providing flexible data width for parallel bus systems and optimized throughput for 16-bit microcontrollers and processors.
• Performance Specifications - 143 MHz maximum clock frequency with 5.4 ns access time enables responsive data transfers for real-time applications and processor-intensive tasks.
• Power Supply - Single 3V to 3.6V supply voltage simplifies power distribution and reduces component count in standard embedded designs.
• Package Form Factor - 54-pin TFBGA measuring 8x8 mm offers space-efficient mounting for board designs with tight area constraints while maintaining reliable solder connections.
• Operating Temperature Range - 0°C to 70°C ambient temperature rating ensures stable operation across typical commercial operating environments.

Typical Applications

• Consumer Electronics - This SDRAM provides working memory for set-top boxes, digital cameras, and multimedia devices where moderate capacity and standard commercial temperature ratings meet cost-sensitive design requirements.
• Embedded Computing Systems - The 16-bit parallel interface integrates directly with embedded processors and microcontrollers, delivering buffer memory for data acquisition systems and embedded controllers without complex interfacing.
• Networking Equipment - In routers, switches, and network appliances, the IS42S16800F-7BL serves as packet buffer memory where the 143 MHz clock rate supports line-rate forwarding for moderate-bandwidth network traffic.
• Test and Measurement Instruments - Laboratory equipment and portable test devices utilize this SDRAM for waveform capture and data logging applications where the compact TFBGA footprint preserves valuable board area in handheld form factors.

Unique Advantages

• Proven SDRAM Architecture: Mature synchronous DRAM technology provides predictable timing characteristics and simplified controller design compared to newer memory technologies, reducing development time and validation effort.
• Compact Ball Grid Array Package: The 8x8 mm TFBGA form factor reduces PCB footprint by approximately 40% compared to equivalent TSOP packages, enabling higher component density and smaller end products.
• Standard Parallel Interface: Direct connection to processor memory buses eliminates the need for protocol conversion or specialized controllers, lowering BOM cost and design complexity.
• Moderate Density Sweet Spot: 128-megabit capacity balances sufficient working memory for typical embedded applications with lower cost per device compared to higher-density alternatives.
• Single Supply Operation: 3.3V-only power requirement aligns with common embedded system voltage rails, avoiding the need for additional voltage regulators or level shifters.

Why Choose the IS42S16800F-7BL?

The IS42S16800F-7BL occupies a valuable position in the memory landscape for designers seeking straightforward, cost-effective SDRAM in a space-efficient package. Its 128-megabit capacity, 143 MHz operation, and 16-bit organization align well with 16-bit and 32-bit embedded processors in commercial-grade applications. The standard TFBGA package format enables automated assembly with established reflow processes, while the single 3.3V supply and parallel interface reduce peripheral component requirements.

This device is particularly well-suited for commercial embedded designs where proven technology, moderate density, and compact packaging take priority over extended temperature ranges or specialized features. Engineers working on cost-sensitive consumer products, industrial controllers within climate-controlled environments, or networking equipment with standard commercial specifications will find the IS42S16800F-7BL delivers reliable performance with minimal integration overhead.

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