IS42S16800F-7BI

Memory IC Overview

The IS42S16800F-7BI is a 128 Mbit Synchronous Dynamic Random Access Memory (SDRAM) manufactured by ISSI. It features an 8M x 16 organization with a 16-bit data bus width. The component supports a maximum clock frequency of 143 MHz and has a typical access time of 5.4 ns. It operates within a voltage range of 3.0 V to 3.6 V and is housed in a 54-pin TFBGA package measuring 8 mm x 8 mm. The device is designed for LVTTL interface compatibility.

Memory IC Feature Summary

• Fully synchronous operation with all signals referenced to the positive clock edge
• Internal bank architecture allows row access hiding during precharge operations
• Supports programmable burst lengths including sequential and interleave sequences
• Compatible with Low Voltage TTL (LVTTL) logic levels

Memory IC Applications

• High-speed data buffering in embedded systems
• Cache memory implementation in microcontroller-based designs
• Graphics memory subsystems for display controllers
• General-purpose volatile storage in industrial control equipment

Memory IC Procurement Notes

Verify current availability status as this component may be subject to discontinuation or limited supply conditions. Confirm that the 54-pin TFBGA package dimensions match the target PCB footprint. Ensure the design supports the required 3.3V power domain and LVTTL signal levels. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this part when a 128 Mbit capacity with a 16-bit interface is required at speeds up to 143 MHz. The TFBGA-54 package is suitable for space-constrained surface-mount applications. Consider the 5.4 ns access time for timing closure in synchronous designs. Verify that the operating temperature range meets the specific environmental requirements of the deployment scenario.

Memory IC Part Context

This component belongs to the IS42S16800F series of SDRAM devices from Integrated Silicon Solution Inc. The series offers various speed grades and package options, including TSOP and BGA configurations. The '7' suffix typically denotes the 143 MHz speed grade. These parts are standard commercial-grade DRAMs intended for general electronic applications rather than automotive or military environments.

Memory IC Replacement Considerations

Direct replacements include other ISSI IS42S16800 variants with compatible pinouts and electrical characteristics. Cross-vendor equivalents must match the 8Mx16 organization, 143 MHz speed, and 54-pin TFBGA package. Verify register settings and timing parameters before substituting with different manufacturers' SDRAM components.