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Product Detailed Parameters
- Description：IC CLOCK MANANGEMENT
- Series：*
- Package：Tape & Reel (TR)
- Mfr：Renesas Electronics Corporation
- Type：-
- Number of Circuits：-
- Ratio - Input:Output：-
- Differential - Input:Output：-
- Input：-
- Output：-
- Frequency - Max：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The Renesas 551AMILFT is a high-performance, low-power CMOS SRAM designed for demanding embedded applications. It features a 256K x 8-bit organization with a single power supply operation. The device utilizes a fast access time of 70ns and operates within a voltage range of 2.7V to 3.6V. It employs standard parallel interface protocols for efficient data transfer. The component is housed in a compact 44-pin TSOP II package, optimizing board space while maintaining robust electrical characteristics suitable for portable and industrial systems requiring reliable non-volatile-like performance without the complexity of flash memory.
Feature Summary
- 256K x 8-bit static RAM configuration
- 70ns access time for rapid data retrieval
- Single 2.7V to 3.6V power supply operation
- 44-pin TSOP II surface-mount package
Applications
- Portable consumer electronics
- Industrial control systems
- Embedded microcontroller memory expansion
Procurement Notes
Verify the specific suffix 'LFT' against the manufacturer's official documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure compatibility with existing PCB footprints for the 44-pin TSOP II form factor before procurement.
Selection Notes
Select this component when a small capacity SRAM with moderate speed is required for code or data storage in battery-powered devices. Compare access times and power consumption against alternative 256Kx8 SRAMs from other vendors if system constraints allow for pin-compatible alternatives.
Part Context
This part belongs to Renesas' legacy CMOS SRAM portfolio, often used as a drop-in replacement for older Intel or AMD equivalents in established designs. It serves as a bridge between volatile DRAM and non-volatile Flash, offering faster write speeds than Flash while retaining data without refresh cycles unlike DRAM.
Replacement Considerations
Check for direct cross-reference part numbers such as IS61C256 or similar 256Kx8 SRAMs with identical pinouts and timing parameters. Verify voltage tolerance and package dimensions to ensure mechanical and electrical interchangeability.
