BY25Q20AWTIG(T)

Memory IC Overview

The BY25Q20AW is a 2M-bit SPI NOR Flash memory designed for code shadowing and data storage. It supports Standard, Dual, and Quad SPI interfaces with clock rates up to 100MHz. The device operates on a single supply voltage ranging from 1.65V to 3.6V. Key electrical parameters include a maximum active current of 3mA and a power-down current of 0.6uA. It features flexible erase architectures with 4KB sectors and 32/64KB blocks, supporting typical program-erase cycles of 10k and data retention of 20 years at +55°C.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad SPI modes with software and hardware reset capabilities.
• Features flexible erase architecture with 4KB sectors and 32/64KB blocks for efficient memory usage.
• Includes comprehensive write protection mechanisms via software commands and hardware /WP pin.
• Integrates three 512-byte security registers with One-Time Programmable (OTP) lock functionality.

Memory IC Applications

• Code shadowing into embedded or external RAM for execution
• General-purpose data storage applications
• High-volume consumer electronic devices

Memory IC Procurement Notes

Verify the specific package variant required, as the BY25Q20AW family includes SOP8, TSSOP8, and USON8 options. Confirm the temperature grade matches the application needs, distinguishing between Commercial (0°C to +70°C) and Industrial (-40°C to +85°C) ranges. Ensure the ordering suffix aligns with the desired physical footprint and environmental rating before finalizing procurement.

Memory IC Selection Notes

Select this component when a low-voltage operation range starting at 1.65V is required, offering flexibility for systems powered by lower voltage rails compared to standard 2.7V parts. Consider the 10k cycle endurance limit suitable for moderate rewrite frequencies. Evaluate the package availability against board space constraints, particularly if utilizing the compact USON8 option.

Memory IC Part Context

This part belongs to the BY25Q20AW series of 2M-bit SPI NOR Flash memories manufactured by BYTe Semiconductor. It shares architectural similarities with other members of the BY25Qxx family but is distinct in its specific density and voltage operating characteristics. The device is optimized for cost-effective solutions in consumer electronics requiring reliable non-volatile storage.

Memory IC Replacement Considerations

Check datasheets for cross-referenced equivalents such as the GD25Q20EEIGR or WF25Q2080BTL, ensuring compatibility with the 1.65V minimum voltage requirement and USON8/SOP8 packaging. Verify that substitute components support the necessary Quad SPI mode and security register features if these are critical to the design.

Memory IC FAQ

How does the /HOLD pin function change based on configuration?

By default, the /HOLD pin pauses serial communications without resetting the clock sequence. However, if the HOLD/RST bit in Status Register-3 is set to 1, the pin functions as a Hardware Reset pin instead.

What happens to the /WP and /HOLD pins when Quad SPI mode is enabled?

When the Quad Enable (QE) bit is set to 1, the /WP and /HOLD functions are disabled. These pins become dedicated bidirectional I/O pins, designated as IO2 and IO3, respectively.