BY25D20ASOIG(R)

Memory IC Overview

The BY25D20ASOIG(R) is a 2M-bit SPI NOR Flash memory by BYTe Semiconductor. It supports Standard and Dual SPI interfaces with clock rates up to 108MHz for Fast Read and Dual Read operations. The device operates on a single 2.7V to 3.6V supply, featuring 4KB sectors and 32/64KB blocks. Key electrical parameters include 20mA maximum active current and 5uA power-down current. It offers 100k program-erase cycles and 20-year data retention, available in industrial (-40℃ to +85℃) and commercial temperature ranges.

Memory IC Feature Summary

• Supports Dual SPI output for high-speed data transfer at 108MHz
• Provides flexible software and hardware write protection mechanisms
• Includes Deep Power-Down mode for reduced standby current consumption
• Features unique 64-bit identification number for anti-cloning

Memory IC Applications

• Battery-powered embedded systems requiring low power modes
• Industrial control units operating in wide temperature environments
• Firmware storage for microcontrollers and processors

Memory IC Procurement Notes

Verify the specific package variant (SOP-8, TSSOP-8, or USON-8) corresponding to the suffix 'SOIG'. Confirm the temperature grade matches the application requirements, as the datasheet distinguishes between Commercial and Industrial ratings. Ensure the ordering information aligns with the manufacturer's latest revision to avoid obsolete part numbers.

Memory IC Selection Notes

Select this component when dual-data-rate read speeds are necessary within a standard four-wire SPI interface constraint. It is suitable for designs requiring robust write protection via the /WP pin or software registers. Consider the 256-byte page program limit for write optimization strategies.

Memory IC Part Context

This model belongs to the BY25D20AS family of 2M-bit Serial Peripheral Interface Flash memories. It shares architectural similarities with other BYTe Semiconductor NOR Flash devices but is distinct in its specific density and instruction set support for Dual Output operations.

Memory IC Replacement Considerations

Check for direct substitutes within the BY25D series from BYTe Semiconductor. Verify compatibility with existing firmware regarding command sets and timing parameters before substituting with similar capacity parts from other manufacturers.

Memory IC FAQ

How does the Dual SPI mode improve performance?

Dual SPI mode utilizes both IO0 and IO1 pins to transfer two bits per clock cycle during Fast Read operations, effectively doubling the data throughput compared to standard single-bit SPI.

What is the function of the /WP pin?

The /WP (Write Protect) pin enables hardware protection. When driven low, it prevents changes to the Status Register bits that control memory block protection, ensuring data integrity against accidental writes.