GD25LB512MEYJGR

Memory IC Overview

The GD25LB512MEYJGR is a 512M-bit Serial NOR Flash memory manufactured by GigaDevice. It features a uniform sector architecture with 64M pages of 256 bytes each, organized into 16K sectors and 1024 blocks. The device supports Standard SPI, Quad SPI, QPI, and DTR modes, enabling data transfer rates up to 720 Mbits/s in DTR Quad I/O mode. It operates on a single power supply voltage ranging from 1.65V to 2.0V. Key electrical characteristics include a typical standby current of 20μA and a typical power-down current of 4μA. The memory offers high endurance with a minimum of 100,000 program/erase cycles and retains data for at least 20 years.

Memory IC Feature Summary

• Supports multiple interface modes including Standard SPI, Quad SPI, QPI, and DTR Quad I/O for flexible system integration.
• Features advanced security mechanisms such as hardware write protection via the WP# pin and individual block locking capabilities.
• Includes a dedicated hardware reset function accessible through the RESET# pin to restore device state instantly.
• Provides a unique 128-bit identification code stored within the device for authentication and tracking purposes.

Memory IC Applications

• Execute in Place (XIP) operations in embedded systems requiring direct code execution from flash.
• Storage applications in consumer electronics needing reliable non-volatile data retention.
• Industrial control systems utilizing the device's wide operating temperature range and robust protection features.
• Automotive electronic modules requiring high-speed data access and secure boot functionality.

Memory IC Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature rating. Confirm that the required voltage range aligns with the system design specifications. Check for any special handling requirements related to moisture sensitivity levels during storage and assembly processes.

Memory IC Selection Notes

Select this component when a low-voltage operation between 1.65V and 2.0V is required for power efficiency. Consider the WSON-8 package if space constraints are critical, ensuring compatibility with surface mount assembly processes. Evaluate the need for DTR support to maximize data throughput in high-performance interfaces.

Memory IC Part Context

This part belongs to the GD25LB series of Serial NOR Flash memories designed for low-voltage applications. The series emphasizes high performance and security features suitable for diverse design requirements. It complements other GigaDevice memory products by offering specialized low-power options for modern embedded designs.

Memory IC Replacement Considerations

GD25LB512MEYIGR

Memory IC FAQ

How does the hardware write protection function operate?

Hardware write protection is enabled by pulling the WP# pin low. This action locks the Block Protect bits and the Status Register Protection bit, preventing software commands from modifying protected memory areas or configuration registers.

What is the purpose of the RESET# pin?

The RESET# pin provides a dedicated hardware reset function. Driving this pin low resets the device to its initial state, clearing volatile bits and returning the device to standby mode regardless of the current operation or settings.

Can the device support Execute in Place (XIP)?

Yes, the GD25LB512ME supports XIP operations. The high-speed read modes, including Quad I/O and DTR, reduce instruction fetch time, allowing the processor to execute code directly from the flash memory without copying it to RAM.