BY25Q80ESTIG(R)

Memory IC Overview

The BY25Q80ESTIG(R) is an 8M-bit Serial Peripheral Interface (SPI) Flash memory device manufactured by BYTe Semiconductor. It supports Standard, Dual, and Quad SPI modes with clock rates up to 120MHz for Fast Read. The device operates on a single supply voltage ranging from 2.7V to 3.6V. Key features include Execute In Place (XIP), software/hardware write protection, and three 1024-byte security registers. It offers flexible architecture with 4KB sectors and 32/64KB blocks, ensuring data retention of typically 20 years and endurance of 100k program-erase cycles.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI interfaces for high-speed data transfer and Execute In Place operations.
• Includes hardware and software write protection mechanisms with configurable block protect bits and status register locks.
• Features three 1024-byte security registers with One-Time Programmable (OTP) lock capabilities.
• Provides flexible memory architecture with 4KB sectors and selectable 32KB or 64KB block erase sizes.

Memory IC Applications

• Embedded systems requiring non-volatile code storage
• Consumer electronics firmware storage
• Industrial control system data logging
• IoT devices needing secure boot code storage

Memory IC Procurement Notes

Verify the specific package type required, as the datasheet lists SOP208mil and USON8 options. Confirm temperature grade availability, noting that Industrial (-40℃ to +125℃) may differ from Commercial grades. Ensure the ordering suffix matches the desired package and temperature range exactly. Contact BYTe Semiconductor directly for special order packages not listed in standard documentation. Validate JEDEC ID compatibility with host controllers before integration.

Memory IC Selection Notes

Select this component when high-density 8M-bit storage is needed with flexible erase granularity. Choose if Quad SPI interface is required for maximum throughput. Consider the robust write protection features for applications demanding data integrity. Verify power supply constraints align with the 2.7V to 3.6V operating range. Ensure the host controller supports the necessary SPI modes and instruction sets defined in the datasheet.

Memory IC Part Context

This part belongs to the BY25Q series of SPI Flash memories from BYTe Semiconductor. It shares architectural similarities with other industry-standard NOR flash devices but includes specific BYTe implementation details for security registers and status bits. The 'ES' suffix indicates the specific revision or variant within the product line. Understanding the family context helps in predicting general behavior, though specific electrical characteristics must be verified against this unique datasheet.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Users should consult BYTe Semiconductor directly for qualified alternatives. Cross-referencing pinouts and command sets with similar capacity devices requires careful verification of proprietary features like the specific security register structure.

Memory IC FAQ

How is the Quad Enable (QE) bit configured?

The QE bit is a non-volatile bit in Status Register 2. Setting it to 1 enables Quad I/O mode, repurposing /WP and /HOLD pins as IO2 and IO3. It should only be set during Quad SPI operation.

What happens if VCC drops below the threshold during operation?

If VCC drops below the Power-On Reset (POR) threshold (VWI), the device stops responding to instructions and enters a reset condition. All operations are disabled until VCC returns to a valid level and the device re-initializes.