70T3319S133BF

Memory IC Overview

The Renesas 70T3319S133BF is a high-speed synchronous dual-port static random-access memory (SRAM) with a density of 256K x 18 bits. It operates at a maximum clock frequency of 133 MHz and features an access time of 4.2 ns. The device supports selectable pipelined or flow-through output modes and utilizes interleaved I/Os for efficient data transfer. It accepts a core voltage of 3.3V and allows selectable 3.3V or 2.5V LVTTL-compatible I/O voltages. The component is housed in a 208-pin CABGA package measuring 15.0 x 15.0 mm.

Memory IC Feature Summary

• Dual-port architecture enables simultaneous independent access to the same memory location by two separate controllers.
• Configurable output mode allows selection between pipelined and flow-through operations to match system timing requirements.
• Interleaved I/O structure optimizes bus efficiency and supports both unidirectional and bidirectional burst data flows.
• Integrated JTAG functionality facilitates boundary scan testing and debugging capabilities within the design.

Memory IC Applications

• High-performance networking equipment requiring low-latency packet buffering
• Telecommunications systems utilizing synchronous data processing
• Industrial automation controllers needing reliable dual-processor memory sharing

Memory IC Procurement Notes

Verify the specific suffix against official Renesas documentation, as variations may indicate differences in temperature grade, lead finish, or moisture sensitivity levels. Confirm current availability status directly with authorized distributors, as this component may be subject to end-of-life notices or long lead times. Ensure compliance with RoHS directives if required by your manufacturing standards.

Memory IC Selection Notes

Select this part when a system requires true simultaneous read/write access from two distinct masters without arbitration logic overhead. Consider the 208-pin CABGA package constraints regarding PCB real estate and thermal dissipation. Evaluate the need for pipelined versus flow-through latency based on the target processor's clock speed and bus cycle requirements.

Memory IC Part Context

This component belongs to the 70T3319 series of synchronous dual-port SRAMs designed for high-speed data handling. It shares architectural similarities with other members like the 70T3339 and 70T3399, differing primarily in organization and voltage specifications. The series is optimized for applications demanding high bandwidth and deterministic access times in embedded environments.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Renesas technical support for direct pin-to-pin replacements or functional equivalents that meet the 256K x 18 synchronous dual-port specification.