BY25Q32CSTJG(R)

Memory IC Overview

The BY25Q32CSTJG(R) is a 32M-bit SPI NOR Flash memory from BYTe Semiconductor. It supports Standard, Dual, Quad SPI, and QPI interfaces with data transfer rates up to 432 Mbits/s. The device operates on a single 2.7V to 3.6V supply. Key performance metrics include a typical page program time of 0.6ms, sector erase time of 50ms, and block erase times of 0.15s/0.25s. It features flexible architecture with 4KB sectors and 32/64KB blocks, offering 100k cycle endurance and 20-year data retention.

Memory IC Feature Summary

• Supports multiple interface modes including Standard, Dual, Quad SPI, and QPI for optimized data throughput.
• Provides comprehensive write protection via software commands, hardware /WP pin control, and power supply lock-down.
• Includes three 256-byte security registers with One-Time Programmable (OTP) lock capabilities.
• Features Discoverable Parameters (SFDP) register for automatic configuration by host systems.

Memory IC Applications

• Embedded firmware storage in industrial control systems
• Code execution in place (XIP) applications requiring fast read speeds
• Data logging and parameter storage in consumer electronics
• IoT devices requiring low power consumption and reliable non-volatile storage

Memory IC Procurement Notes

Verify the specific package variant (SOP-8, WSON, etc.) corresponding to the suffix 'TJG' against official ordering information. Confirm temperature range requirements match the commercial or industrial grades listed in the datasheet. Ensure ESD handling procedures are followed during assembly. Cross-reference JEDEC IDs if system compatibility with existing flash components is required.

Memory IC Selection Notes

Select this component when high-speed Quad I/O or QPI access is needed for code execution. Consider the 32Mbit density for applications requiring moderate storage capacity within an 8-pin footprint. Evaluate the power consumption specs against battery-operated constraints. Verify that the host controller supports the required SPI modes and instruction sets for optimal performance.

Memory IC Part Context

This part belongs to the BY25Q32CS family of 32M-bit SPI NOR Flash memories. It is designed as a drop-in replacement for similar industry-standard parts like GD25Q32 or W25Q32 series, maintaining pin compatibility while offering competitive performance metrics. The product line emphasizes reliability and flexibility for various embedded storage needs.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material. Designers should verify electrical and pin compatibility with equivalent 32M-bit SPI NOR Flash devices from other manufacturers before substitution.

Memory IC FAQ

How does the Quad Enable (QE) bit affect pin functionality?

When the QE bit is set to 1, the /WP and /HOLD pins function as IO2 and IO3 respectively for Quad SPI operations. When QE is 0, these pins retain their standard Write Protect and Hold functions.

What is the purpose of the Status Register Protect (SRP) bits?

The SRP bits control the method of write protection for the status registers, allowing for software protection, hardware protection via the /WP pin, power supply lock-down, or one-time programmable permanent protection.