GD25Q40EEIGR

Memory IC Overview

The GD25Q40EEIGR is a 4 Mbit (512K x 8) NOR flash memory manufactured by GigaDevice. It operates on a single 2.7 V to 3.6 V power supply and supports standard, dual, and quad SPI interfaces with a maximum clock frequency of 133 MHz. The device features uniform 4 KByte sectors and 32/64 KByte blocks within an 8-lead USON package.

Memory IC Feature Summary

• Supports standard, dual, and quad SPI modes for flexible data transfer rates up to 532 Mbits/s in Quad I/O mode.
• Includes advanced security features such as 128-bit unique identification and two 2048-byte security registers with one-time programmable lock bits.
• Provides comprehensive write protection capabilities through software block protect settings and hardware WP# pin control.

Memory IC Applications

• Execute In Place (XiP) code execution applications
• Storage for firmware and configuration data
• Consumer electronics devices requiring non-volatile storage

Memory IC Procurement Notes

Verify the specific suffix 'EIGR' against the manufacturer's official ordering information table to confirm the exact package type and temperature range. Ensure that the required Quad Enable (QE) bit configuration matches your system design, as this affects pin functionality. Confirm compliance with RoHS directives if applicable to your manufacturing requirements.

Memory IC Selection Notes

Select this component when a compact surface-mount solution is required for small-capacity code storage. The USON package offers space efficiency compared to SOP variants. Consider the 133 MHz speed capability for high-performance read operations. Evaluate the need for hardware write protection via the WP# pin versus software-based protection schemes.

Memory IC Part Context

This part belongs to the GD25Q40E series of uniform sector serial flash memories. It shares architectural similarities with other members like the GD25Q16E and GD25Q80E but differs in density and specific package options. The EEIGR designation indicates a specific variant within the broader GD25Q family designed for general-purpose embedded applications.

Memory IC Replacement Considerations

GD25Q40CTIGR

Memory IC FAQ

How does the Quad Enable (QE) bit affect the HOLD# and WP# pins?

When the QE bit is set to 1, the HOLD# and WP# pins function as bidirectional I/O pins (IO3 and IO2). When QE is 0, these pins retain their dedicated hold and write-protect functions.

What is the purpose of the Security Registers in this device?

The device includes two 2048-byte security registers that can be programmed with user-defined data. These registers feature one-time programmable lock bits (LB1, LB0) that permanently prevent further writing or erasing once locked.