BY25D20ASTIG(R)

Memory IC Overview

The BY25D20ASTIG(R) is a 2M-bit SPI NOR Flash memory by BYTe Semiconductor. It supports Standard and Dual SPI interfaces with clock rates up to 55MHz for normal read and 108MHz for fast/dual read. Operating voltage ranges from 2.7V to 3.6V. Key performance metrics include a typical page program time of 0.7ms, sector erase time of 100ms, and block erase times of 0.3s or 0.5s. The device features a flexible architecture with 4KB sectors and 32/64KB blocks, low power consumption (20mA active, 5uA power down), and industrial temperature range support (-40°C to +85°C).

Memory IC Feature Summary

• Supports Dual SPI operation for data transfer at double the rate of standard SPI.
• Includes hardware and software write protection mechanisms via Status Register bits and WP pin.
• Features flexible memory architecture with uniform 4KB sectors and 32/64KB blocks.
• Provides deep power-down mode for significantly reduced standby current consumption.

Memory IC Applications

• Battery-powered embedded systems requiring low power consumption.
• Firmware storage in microcontroller-based applications.
• Code execution in place (XIP) applications using fast read modes.
• Data logging and configuration storage in industrial devices.

Memory IC Procurement Notes

Verify the specific package variant (SOP-8, TSSOP-8, or USON-8) required for your design, as the base model number covers multiple packages. Confirm the suffix 'TIG(R)' corresponds to the exact tape-and-reel packaging and RoHS compliance status needed for your manufacturing process. Cross-reference the manufacturer ID (68h) and device ID (11h or 4012h depending on instruction) during component qualification to ensure authenticity and correct part identification.

Memory IC Selection Notes

Select this component if your application requires Dual SPI interface support for higher throughput without Quad I/O complexity. Ensure the system voltage stays within the 2.7V to 3.6V range. Consider the 0.7ms typical page program time for write-heavy workloads. Verify that the available packages (SOP-8, TSSOP-8, USON-8) fit your PCB layout constraints. Check if the industrial temperature range (-40°C to +85°C) is necessary for your operating environment.

Memory IC Part Context

The BY25D20AS series belongs to BYTe Semiconductor's 2M-bit SPI NOR Flash family. It is designed as a cost-effective solution for applications needing moderate density with dual-speed read capabilities. The series shares architectural similarities with other BY25DxxAS models but differs in density and specific package options. It competes in the general-purpose NOR Flash market for consumer and industrial electronics.

Memory IC Replacement Considerations

Check for direct equivalents from other manufacturers supporting Dual SPI and similar voltage ranges. Verify pin compatibility and command set adherence if substituting with different brands. Ensure the replacement supports the required 108MHz fast read speed and has comparable erase/program times.

Memory IC FAQ

What is the maximum clock frequency for Dual Output Fast Read?

The maximum clock frequency for Dual Output Fast Read is 108MHz.

How does the Write Protect (WP) pin function?

Driving the WP pin low enables hardware protection for the Block Protect (BP2-BP0) and Status Register Protect (SRP) bits, making them read-only.

What is the typical page program time?

The typical page program time is 0.7ms.