7133SA55JI8

Overview

The 7133SA55JI8 is a dual-port static random-access memory (SRAM) integrated circuit manufactured by Renesas Electronics Corporation. It provides a total storage capacity of 32 kilobits, organized as 2048 words by 16 bits. The device features asynchronous parallel interface operation with a maximum access time of 55 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and supports an industrial temperature range from -40°C to +85°C. The component is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology.

Feature Summary

• Supports simultaneous independent read and write operations through two distinct port interfaces
• Utilizes CMOS technology for high-speed asynchronous data processing
• Compatible with standard parallel bus architectures for system integration

Applications

• High-performance processor secondary cache systems
• Network router buffer memory applications
• Industrial control system data logging

Procurement Notes

Verify the current lifecycle status before procurement planning, as this specific part number is listed as obsolete or end-of-life by the manufacturer. Confirm that the 68-PLCC package footprint matches existing board designs, as surface-mount PLCC packages require specific soldering profiles. Ensure compliance with RoHS directives if required by the target application environment, noting that older variants may not meet current environmental standards.

Selection Notes

Select this component when dual-port functionality is required to allow concurrent access from different system controllers without arbitration delays. The 55 ns access speed suits moderate-frequency digital signal processing tasks. Consider the 68-PLCC package constraints regarding PCB real estate and thermal dissipation capabilities compared to modern QFP or BGA alternatives.

Part Context

This component belongs to the Renesas 7133SA series of dual-port SRAMs. The series is characterized by its ability to facilitate data exchange between two independent processors or buses. The '55' suffix denotes the 55 nanosecond access time specification, while 'JI8' identifies the specific commercial/industrial temperature grade and plastic leadless chip carrier packaging configuration.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status of this component, engineers must evaluate pin-compatible alternatives or redesign the PCB layout to accommodate newer package technologies such as TQFP or BGA.