IS45S16400F-7BLA1

Memory IC Overview

The IS45S16400F-7BLA1 is a 64Mbit Synchronous DRAM organized as 4 Meg x 16 bits across four internal banks. It operates on a single 3.3V power supply with an LVTTTL interface. The device supports clock frequencies up to 143 MHz and features a 54-ball FBGA package measuring 8mm x 8mm. Key timing parameters include a CAS latency of 2 or 3 clocks, with access times reaching 5.4 ns at the specified frequency.

Memory IC Feature Summary

• Supports fully synchronous operation with all signals referenced to the positive clock edge
• Includes internal bank architecture to hide row access and precharge cycles
• Features programmable burst lengths including sequential and interleave sequences
• Provides self-refresh and auto-refresh modes for data retention

Memory IC Applications

• High-speed data buffering in embedded systems
• Graphics memory applications requiring pipeline architecture
• Automotive electronic control units (ECUs)
• Industrial control system memory modules

Memory IC Procurement Notes

Verify the specific suffix '7BLA1' against the manufacturer's current datasheet to confirm pinout compatibility and temperature grade. Confirm that the 54-ball FBGA footprint matches the target PCB design. Ensure the system voltage aligns with the required 3.3V operating range.

Memory IC Selection Notes

Select this component when a quad-bank SDRAM structure is required for high-performance random access. Consider the 54-ball FBGA package constraints for board space. Evaluate the 143 MHz clock speed against system bus requirements. Verify that the LVTTTL interface logic levels are compatible with the host controller.

Memory IC Part Context

This part belongs to the IS45S16400F series of 64Mb SDRAMs manufactured by ISSI. It shares architectural similarities with other members of the family but differs in package type and specific timing grades. The 'F' designation typically indicates the commercial or industrial temperature range variants within the broader product line.

Memory IC Replacement Considerations

AS4C4M16SA-6BAN

Memory IC FAQ

How many internal banks does the IS45S16400F support?

The device is organized into four independent internal banks.

What is the function of the A10 pin during a READ command?

When A10 is HIGH during a READ command, it enables the Auto Precharge feature, which automatically initiates a precharge at the end of the burst.