BY25D20ASTIG(T)

Memory IC Overview

The BY25D20ASTIG(T) is a 2M-bit SPI NOR Flash memory manufactured by BYTe Semiconductor. It supports Standard and Dual SPI interfaces with clock rates up to 108 MHz for Fast Read and Dual Output modes. The device operates on a single supply voltage of 2.7V to 3.6V and features flexible architecture with 4KB sectors and 32/64KB blocks. It includes hardware and software write protection, low power consumption, and industrial temperature range support.

Memory IC Feature Summary

• Supports Dual SPI operation for high-speed data transfer at 108 Mbits/s
• Includes hardware and software write protection mechanisms via Status Register
• Features flexible erase architecture with 4KB sectors and 32/64KB blocks
• Provides unique 64-bit identification number for system security

Memory IC Applications

• Battery-powered devices requiring low standby current
• Systems needing secure code execution from non-volatile memory
• Embedded applications requiring hardware write protection
• Industrial control systems operating in wide temperature ranges

Memory IC Procurement Notes

Verify the specific package variant (SOP, TSSOP, or USON) matches the design requirements, as the base part number covers multiple packages. Confirm the suffix 'T' indicates tube packaging if required for assembly processes. Ensure the industrial temperature grade (-40°C to +85°C) aligns with environmental specifications. Cross-reference JEDEC IDs for compatibility checks during integration.

Memory IC Selection Notes

Select this component when Dual SPI speed is required but Quad SPI is unnecessary. It is suitable for designs constrained by pin count due to its standard 4-wire interface capability. Consider the 256-byte page program limit for write efficiency. Verify that the 2M-bit capacity fits the application storage needs without excessive waste.

Memory IC Part Context

This part belongs to the BY25D20AS family of 2M-bit SPI NOR Flash memories. It shares core electrical characteristics and instruction sets with other variants in the series, differing primarily in package type and manufacturing lot identifiers. The technology focuses on reliability and low power consumption for embedded storage applications.

Memory IC Replacement Considerations

BY25D20ASTIG(R)

Memory IC FAQ

How does the Dual SPI mode improve performance?

Dual SPI allows data to be transferred at twice the rate of standard SPI by using both IO0 and IO1 pins simultaneously, supporting read speeds up to 108 Mbits/s.

What is the purpose of the Unique ID Number?

The 64-bit Unique ID Number is factory-set and read-only, used to prevent copying or cloning of systems by providing a distinct identifier for each device.

How is hardware write protection enabled?

Hardware write protection is enabled by driving the /WP pin low while the SRP bit in the Status Register is set to 1, locking the Block Protect bits against modification.