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Product Detailed Parameters
- Description：IC FLASH 64MBIT SPI/QUAD 8SOIC
- Series：-
- Mfr：Adesto Technologies
- Package：Tape & Reel (TR),Cut Tape (CT)
- Memory Type：Non-Volatile
- Memory Format：FLASH
- Technology：FLASH
- Memory Size：64Mbit
- Memory Organization：8M x 8
- Memory Interface：SPI - Quad I/O, QPI
- Clock Frequency：104 MHz
- Write Cycle Time - Word, Page：150µs, 5ms
- Voltage - Supply：2.7V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.209", 5.30mm Width)
- Supplier Device Package：8-SOIC
- Access Time：-
- Grade：-
- Qualification：-
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Overview
The AT25QF641-SUB-T is a 64 Mbit SPI NOR Flash memory device manufactured by Renesas Electronics Corporation. It operates within a voltage range of 2.7V to 3.6V and supports clock frequencies up to 104 MHz. The memory organization is structured as 8M x 8 bits. It features SPI interface with Quad I/O and QPI support, housed in an 8-SOIC package. The component is rated for industrial temperatures from -40°C to 85°C.
Feature Summary
- Supports Dual I/O and Quad I/O (QPI) operations for enhanced data throughput
- Includes three security register pages for unique device serialization and system-level Electronic Serial Number storage
- Features standard block architecture optimized for code and data storage applications
Applications
- Code shadowing from Flash memory into embedded or external RAM for execution
- System-level Electronic Serial Number (ESN) storage
- Locked key storage and unique device serialization
Procurement Notes
Verify the manufacturer designation carefully, as this part is produced by Renesas Electronics Corporation despite historical Adesto Technologies branding. Confirm the specific suffix 'SUB-T' corresponds to the 8-SOIC package variant. Check current status as discontinued or obsolete models may require alternative sourcing strategies or lifecycle management approval.
Selection Notes
Select this component when a 64 Mbit capacity with Quad I/O support is required for 3V systems. Ensure the design accommodates the 8-SOIC package dimensions and the specified operating temperature range. Verify compatibility with existing SPI controllers supporting QPI modes. Consider that this model is marked as discontinued, necessitating evaluation of long-term supply availability.
Part Context
This device belongs to the AT25QF641 series of SPI NOR Flash memories designed for 3V systems. It shares architectural similarities with other members like the AT25SF641 but adds Quad I/O capabilities. The product line focuses on standard class code and data storage solutions with universal pinout compatibility.
Replacement Considerations
Public confirmed substitute part numbers are not explicitly listed in the provided documentation for this specific discontinued variant. Evaluate compatible 64 Mbit SPI NOR Flash devices from Renesas or other manufacturers ensuring matching voltage, interface, and package specifications.
