7005S55PF8

Memory IC Overview

The Renesas Electronics Corporation 7005S55PF8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with a storage capacity of 64 kilobits. It features an 8K x 8 organization and utilizes a parallel interface for data transfer. The component operates within a supply voltage range of 4.5V to 5.5V and supports a maximum access time of 55 nanoseconds. It is housed in a 64-pin Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm, designed for surface-mount installation. The device functions reliably across an ambient temperature range of 0°C to 70°C.

Memory IC Feature Summary

• Supports simultaneous independent reads and writes from two distinct ports without bus contention.
• Includes on-chip hardware logic for semaphore signaling to manage port arbitration.
• Provides automatic power-down control via chip enable inputs to minimize standby current.
• Features TTL-compatible I/O levels for direct interfacing with standard digital logic.

Memory IC Applications

• Master/Slave dual-port RAM configurations in 16-bit or wider data systems
• High-speed buffer memory in telecommunications equipment
• Data logging applications requiring concurrent host and peripheral access

Memory IC Procurement Notes

This specific part number is officially discontinued and no longer manufactured by Renesas Electronics. Verification of availability should focus exclusively on authorized distributors holding remaining stock or approved replacement components. Sourcing from unauthorized channels carries significant risk regarding authenticity and functionality. Engineers must validate that any substitute parts meet the original electrical specifications and pinout requirements before integration into existing designs.

Memory IC Selection Notes

Designers requiring this component should evaluate the 7005L15PFG8 as a verified upgrade alternative provided by the manufacturer. Selection criteria must prioritize compatibility with the existing 64-TQFP footprint and ensure the replacement maintains the required 5V operation and dual-port architecture. Verify that the substitute meets the same thermal and voltage constraints to avoid redesigning the power supply or thermal management infrastructure.

Memory IC Part Context

The 7005S55PF8 belongs to the broader 7005 series of dual-port SRAMs produced by Renesas Electronics. This family is engineered for applications demanding high-speed, non-blocking data exchange between two processors or system buses. The series typically offers various speed grades and package options, including TQFP and PGA, to accommodate different density and form factor requirements in industrial and commercial electronics.

Memory IC Replacement Considerations

The 7005L15PFG8 is listed as an official upgrade replacement by Renesas Electronics. Ensure the substitute matches the 64-TQFP package and 5V logic levels. Verify functional equivalence regarding semaphore and interrupt signals during migration.

Memory IC FAQ

Does the 7005S55PF8 support simultaneous access to the same memory address?

Yes, the device features true dual-ported memory cells that allow simultaneous reads of the same memory location from both ports without conflict.

How does the 7005S55PF8 handle data conflicts between the two ports?

It includes full on-chip hardware support for semaphore signaling and port arbitration logic to manage access rights and prevent data corruption.