70T3319S166BC8

Memory IC Overview

The 70T3319S166BC8 is a high-speed synchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It features a memory organization of 256K x 18 bits, providing a total capacity of 4.5 Mbits. The device supports an I/O frequency of 166 MHz with a maximum access time of 3.6 ns. It operates with a core voltage of 2.5V and supports selectable 3.3V or 2.5V I/O supplies. The component is housed in a 256-pin CABGA package measuring 17.0 x 17.0 mm.

Memory IC Feature Summary

• Dual-port architecture enabling simultaneous independent access to the same memory location from two separate ports.
• Supports both pipelined and flow-through output modes for flexible data handling.
• Includes JTAG functionality for boundary scan testing and system diagnostics.
• Features automatic power-down capabilities controlled by chip enables to minimize standby power consumption.

Memory IC Applications

• High-performance networking equipment requiring low-latency data buffering.
• Telecommunications systems utilizing burst data flow optimization.
• Industrial control systems needing reliable synchronous memory interfaces.

Memory IC Procurement Notes

This component is officially designated as End-of-Life (EOL) by the manufacturer. Production has ceased, and availability is restricted to existing stock or surplus channels. Verify authenticity carefully due to potential obsolescence risks. Confirm package integrity and moisture sensitivity levels before procurement, as long-term storage may affect reliability.

Memory IC Selection Notes

Select this part only if legacy compatibility with 256K x 18 synchronous dual-port SRAM is required. Ensure design support for 166 MHz operation and 2.5V core voltage. Consider alternative modern components if new production runs are necessary, as this specific package and speed grade are no longer actively manufactured.

Memory IC Part Context

The 70T3319 series belongs to Renesas' high-speed synchronous dual-port RAM family, optimized for unidirectional or bidirectional data bursts. The 'T' suffix typically denotes temperature range variations, while 'BC8' specifies the 256-pin CABGA package configuration. This series integrates counters, dual clocks, and interrupt capabilities for complex system synchronization.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: IDT70T3319S166BF, IDT70T3319S166BC.