IS42S32800B-6BL

Memory IC Overview

The IS42S32800B is a 256-Mbit Synchronous Dynamic RAM (SDRAM) manufactured by ISSI. It features an internal organization of four banks, each configured as 2M words by 32 bits. The device supports fully synchronous operation with clock rates up to 166 MHz and 143 MHz. It utilizes a single +3.3V ±0.3V power supply and an LVTTL interface. Available packages include an 86-pin TSOP-II and a 90-ball LF-BGA measuring 8x13mm with a 0.8mm pitch.

Memory IC Feature Summary

• Supports concurrent auto precharge for improved memory bandwidth efficiency
• Features programmable mode register for customizable CAS latency, burst length, and burst type
• Includes individual byte control via DQM inputs for precise data masking
• Provides both Auto Refresh and Self Refresh modes for data retention

Memory IC Applications

• High-speed embedded systems requiring large memory capacity
• Industrial grade applications operating within extended temperature ranges
• Consumer electronics utilizing high memory bandwidth requirements
• Network equipment and communication devices

Memory IC Procurement Notes

Verify the specific package variant required, as the base model number covers both 86-pin TSOP-II and 90-ball BGA options. Confirm that the industrial grade specification aligns with your thermal requirements. Ensure the ordering suffix matches the desired physical footprint and lead-free status before finalizing procurement documentation.

Memory IC Selection Notes

Select this component when a 256-Mbit density with a 32-bit data bus width is necessary. Choose based on the required clock frequency, supporting either 166 MHz or 143 MHz operations. Evaluate the physical space constraints to determine between the TSOP-II and BGA packaging options. Ensure the system design accommodates the single 3.3V power supply requirement.

Memory IC Part Context

This part belongs to the IS42S32800 series of SDRAMs from Integrated Silicon Solution Inc. It represents a high-density memory solution designed for general-purpose computing and specialized industrial environments. The series offers flexibility through multiple package types and speed grades to suit diverse board layout and performance needs.

Memory IC Replacement Considerations

Direct substitutes may include other ISSI SDRAMs within the same density class, such as the IS42S32800L. Verify pin compatibility and electrical specifications before swapping components.