7025S55J

Memory IC Overview

The Renesas Electronics Corporation 7025S55J is a high-speed, asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 128 kilobits organized as 8K words by 16 bits per word. The device features independent read/write ports allowing simultaneous access to the same memory location without conflict. It operates on a single 5V power supply with a specified voltage range of 4.5V to 5.5V. The standard access time for this model is 55 nanoseconds. It supports battery backup operation for data retention and includes hardware support for semaphore signaling between ports.

Memory IC Feature Summary

• True dual-ported memory architecture enabling simultaneous independent reads from both ports
• On-chip hardware support for interrupt flags and port arbitration logic
• Automatic power-down mode controlled by chip enable signals for low standby power
• TTL-compatible single 5V power supply operation

Memory IC Applications

• Stand-alone 128K-bit dual-port RAM systems
• Master/Slave dual-port RAM configurations for 32-bit or wider data bus expansion
• High-speed data buffering in asynchronous communication interfaces
• Real-time signal processing applications requiring concurrent data access

Memory IC Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm specific suffix designations match required package types and temperature ranges. Check for end-of-life notices or discontinuation updates prior to procurement planning. Ensure compatibility with existing board designs regarding pinout and electrical specifications.

Memory IC Selection Notes

Select this component when simultaneous independent access to shared memory is required. Choose based on the 55ns access speed requirement and 8Kx16 organization. Consider the 84-pin PLCC package if surface mount assembly is preferred. Evaluate power consumption needs against the automatic power-down feature capabilities.

Memory IC Part Context

The 7025 series represents a family of high-speed dual-port SRAMs designed for versatile memory sharing applications. This specific model belongs to the asynchronous variant within the series. It is manufactured by Renesas Electronics Corporation, continuing the legacy of IDT dual-port memory technologies. The series supports various access times and package options to suit different system performance requirements.

Memory IC Replacement Considerations

Check for equivalent parts within the 7025 series with matching access times. Verify pin-to-pin compatibility with alternative dual-port SRAM packages. Consult official substitution lists for any updated components replacing discontinued variants.