GD25LQ40ETIGR

Memory IC Overview

The GD25LQ40ETIGR is a 4 Mbit Serial NOR Flash memory device manufactured by GigaDevice. It supports Standard, Dual, and Quad SPI interfaces with a maximum clock frequency of 133 MHz. The device operates on a single power supply voltage ranging from 1.65 V to 2.0 V. It features uniform sector architecture with 4 KByte sectors and 32/64 KByte blocks. The memory organization consists of 512K pages of 256 Bytes each. Typical standby current is 10 μA, and deep power-down current is 1 μA. Endurance is rated for a minimum of 100,000 Program/Erase cycles with 20-year data retention.

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 software and hardware write protection mechanisms via Block Protect bits and the WP# pin.
• Features advanced security capabilities including a 128-bit Unique ID and three 512-Byte Security Registers with OTP locks.
• Enables Execute In Place (XiP) operation with continuous read wrap functionality to reduce data latency.

Memory IC Applications

• Code storage for microcontrollers and system-on-chip applications
• Firmware storage in consumer electronics devices
• Data logging and parameter storage in industrial control systems

Memory IC Procurement Notes

Verify the specific package variant required, as the GD25LQ40E series includes SOP8, USON8 (3x2mm), and USON8 (1.5x1.5mm). Confirm that the operating voltage range of 1.65V to 2.0V aligns with the target system's power supply rails. Ensure the Quad Enable (QE) bit configuration matches the interface requirements, as it affects pin functionality for WP# and HOLD#.

Memory IC Selection Notes

Select this component when a low-voltage (1.65V-2.0V) operation is required compared to standard 3V flash memories. The Quad SPI support offers higher throughput for code execution compared to standard SPI devices. Consider the uniform sector architecture for simplified erase management. Verify thermal and electrical characteristics against the application environment, specifically noting the industrial temperature range availability.

Memory IC Part Context

The GD25LQ40ETIGR belongs to the GD25LQ40E/20E family of Dual and Quad Serial Flash memories. This series is designed for high-performance code storage applications requiring low power consumption and robust data protection. It complements other densities in the GD25LQ series, offering a balance of capacity, speed, and feature set for embedded systems.

Memory IC Replacement Considerations

GD25LQ20ETIGR: Offers 2 Mbit density with identical interface and voltage specifications.

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 bidirectional I/O pins (IO2 and IO3) for Quad SPI operations. When QE is 0, these pins retain their dedicated Write Protect and Hold functions.

What is the purpose of the CMP bit in the Status Register?

The Complement Protect (CMP) bit modifies the behavior of the Block Protect (BP4-BP0) bits, allowing for different memory protection configurations. It provides flexibility in defining which portions of the memory array are protected against program and erase commands.