GD25Q40CTIG

Memory IC Overview

The GD25Q40CTIG is a 4M-bit (512K x 8) NOR flash memory manufactured by GigaDevice. It operates on a single 3.3V power supply within the 2.7V to 3.6V range. The device supports Standard, Dual, and Quad SPI interfaces with clock frequencies up to 120MHz. It features uniform sector architecture with 4KB sectors and 32/64KB blocks. The component includes hardware and software write protection, a 128-bit unique ID, and four 256-byte security registers with OTP locks.

Memory IC Feature Summary

• Supports standard, dual, and quad serial peripheral interface protocols for flexible data transfer rates.
• Provides comprehensive data protection through software block protect bits and hardware WP# pin control.
• Includes advanced security features such as a unique device identifier and one-time programmable security registers.

Memory IC Applications

• Code storage in embedded systems requiring execute-in-place capability
• Configuration data retention in industrial control devices
• Firmware storage for IoT modules operating in industrial temperature ranges

Memory IC Procurement Notes

Verify the specific ordering suffix against the manufacturer's official selection guide to confirm package type and tape/reel specifications. Confirm that the requested variant matches the required voltage and temperature grade. Check current lifecycle status as components may be designated as not recommended for new designs. Ensure compatibility with existing PCB footprint dimensions before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a 4M-bit capacity is required with support for high-speed quad I/O operations. Ensure the design accommodates the 8-lead SOP package dimensions. Verify that the system voltage remains within the specified 2.7V to 3.6V operational range. Consider the uniform sector architecture for consistent erase block sizing requirements in the application firmware.

Memory IC Part Context

This part belongs to the GD25Q40C series of 3.3V uniform sector dual and quad serial flash memories. It shares architectural similarities with other members of the GD25Q family but offers specific capacity and speed characteristics. The device is designed for applications requiring reliable non-volatile storage with robust write protection mechanisms.

Memory IC Replacement Considerations

GD25Q40ETIGR is listed as a suggested alternative in distributor catalogs. Verify electrical parameters and package compatibility before substitution.

Memory IC FAQ

How does the Quad Enable bit affect pin functionality?

When the Quad Enable bit is set to 1, the WP# and HOLD# pins function as dedicated data I/O pins (IO2 and IO3). When set to 0, they retain their original write protect and hold functions.

What is the purpose of the Status Register Protect bits?

The SRP1 and SRP0 bits control the method of write protection for the status register, allowing for software protection, hardware protection via the WP# pin, or permanent lock-down modes.