AS4C4M32S-6TCNTR

Memory IC Overview

The AS4C4M32S-6TCNTR is a 128 Mbit Synchronous DRAM (SDRAM) manufactured by Alliance Memory. It features a 32-bit data bus width and an internal organization of 4M x 32 bits across four banks. The device supports a maximum clock frequency of 166 MHz with a minimum access time of 5.4 ns. It operates on a single 3.3V power supply and utilizes an LVTTL interface. The component is housed in an 86-pin TSOP II package and is designed for commercial temperature ranges.

Memory IC Feature Summary

• Fully synchronous operation with an internal pipelined architecture
• Programmable mode register supporting various CAS latencies and burst lengths
• Individual byte control via DQM0-3 signals
• Supports Auto Refresh and Self Refresh modes

Memory IC Applications

• High bandwidth memory systems
• Consumer electronics requiring fast data access
• Industrial embedded applications
• Automotive electronic modules

Memory IC Procurement Notes

Verify the specific ordering suffix to confirm the package type, temperature range, and lead-free status. Ensure the procurement documentation matches the exact part number to avoid discrepancies in electrical specifications or physical dimensions. Cross-reference the manufacturer's official datasheet for any recent revisions that may impact compatibility.

Memory IC Selection Notes

Select this component when a high-speed 32-bit SDRAM interface is required. Consider the 166 MHz clock rate and 5.4 ns access time for performance needs. Evaluate the 86-pin TSOP II package constraints against the PCB layout requirements. Confirm that the system voltage aligns with the specified 3.3V operating range.

Memory IC Part Context

This component belongs to the AS4C4M32S series of Synchronous DRAMs from Alliance Memory. It is designed as a high-speed CMOS memory solution. The series includes variants with different clock speeds and temperature ratings. The -6 suffix indicates the 166 MHz speed grade within this product family.

Memory IC Replacement Considerations

AS4C4M32S-7TCNTR

Memory IC FAQ

What is the internal bank configuration of the AS4C4M32S?

The device contains four independent banks, each organized as 1M x 32 bits.

How does the DQM signal function during read operations?

During read cycles, the DQM signals act as output masks to control the data output buffers.