BY25D80ASOIG(R)

Memory IC Overview

The BY25D80AS is an 8M-bit Serial Peripheral Interface (SPI) NOR Flash memory device. It supports standard SPI, Dual SPI, and Quad SPI modes with a single low-voltage power supply ranging from 2.7V to 3.6V. The device features flexible architecture with 4KB sectors and 32/64KB blocks. It offers fast read speeds up to 108MHz in Dual mode and includes software/hardware write protection mechanisms.

Memory IC Feature Summary

• Supports Standard SPI, Dual SPI, and Quad SPI interfaces for versatile data transfer options
• Features flexible memory architecture with 4KB sectors and 32/64KB uniform blocks
• Includes comprehensive software and hardware write protection capabilities via status register and /WP pin
• Provides unique 64-bit identification number for system security and anti-cloning purposes

Memory IC Applications

• Embedded systems requiring non-volatile code storage
• Battery-powered devices utilizing deep power-down mode for energy efficiency
• Industrial applications needing robust write protection and wide temperature range operation
• Consumer electronics storing firmware or configuration data

Memory IC Procurement Notes

Verify the specific package type (SOP8, TSSOP8, or USON8) and temperature grade (Commercial or Industrial) required for your design. Ensure the ordering suffix matches the desired physical footprint and operating range as defined in the official datasheet order information section. Confirm voltage compatibility with your system's 2.7V-3.6V supply rails before procurement.

Memory IC Selection Notes

Select this component when an 8M-bit capacity is needed with SPI interface compatibility. Consider the Dual SPI mode if higher read throughput is required compared to standard SPI. Evaluate the package options based on board space constraints, choosing between SOP8, TSSOP8, or USON8 formats. Ensure the selected temperature range aligns with your application environment requirements.

Memory IC Part Context

The BY25D80AS belongs to the BYTe Semiconductor SPI NOR Flash family, designed for general-purpose non-volatile storage. It complements other densities in the series by providing 8M-bit capacity. The device integrates standard SPI commands with enhanced dual-mode capabilities, positioning it as a cost-effective solution for embedded memory needs in various electronic devices.

Memory IC Replacement Considerations

Check for direct pin-to-pin compatible alternatives with identical 8M-bit density and SPI interface support. Verify that any substitute part maintains the same voltage range (2.7V-3.6V) and package dimensions. Ensure the replacement supports similar erase block sizes and write protection features to maintain software compatibility.

Memory IC FAQ

How does the hardware write protection function work?

Hardware write protection is enabled by driving the /WP pin low while the Status Register Protect (SRP) bit is set to 1. This locks the Block Protect bits, preventing any software modification to the protected memory regions.

What is the purpose of the Read Unique ID Number instruction?

This instruction accesses a factory-set, read-only 64-bit number unique to each device. It is used for system security to prevent copying or cloning of the hardware.

Can the device be read while a program or erase cycle is in progress?

Yes, the Read Data Bytes, Fast Read, and Dual Output Fast Read instructions can be executed during a program or erase cycle. However, new program or erase cycles cannot be initiated until the previous one completes.