GD25D40CEIGR

Memory IC Overview

The GD25D40CEIGR is a 4M-bit (512K x 8) SPI 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 SPI and Dual Output modes, with clock frequencies up to 104MHz for fast read operations under a 30pF load. It features a uniform sector architecture with 4KB sectors and 32/64KB blocks. The component includes hardware and software write protection, a 128-bit unique ID, and data retention of at least 20 years. It is housed in an 8-USON package measuring 3x2mm with a thickness of 0.45mm.

Memory IC Feature Summary

• Supports Standard SPI and Dual Output interfaces for flexible data transfer speeds.
• Features uniform sector architecture allowing consistent erase and program operations across the memory array.
• Provides advanced security through a 128-bit unique identifier per device.
• Includes comprehensive write protection mechanisms via software commands and hardware WP# pin control.

Memory IC Applications

• Code storage for microcontrollers requiring non-volatile firmware retention.
• Data logging applications needing reliable long-term storage.
• Consumer electronics devices utilizing small form factor surface-mount packages.
• Industrial control systems operating within extended temperature ranges.

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required package type, as the GD25D40C series offers multiple options including SOP8 and USON8. Confirm voltage grade compatibility with the system design, ensuring the 3.3V specification aligns with host controller I/O levels. Check for automotive-grade variants if functional safety certification is required for the target application environment.

Memory IC Selection Notes

Select this component when a 4M-bit capacity is needed with a compact 8-USON footprint. Ensure the host interface supports Dual Output commands if higher read throughput is desired. Consider the industrial temperature range (-40°C to +85°C) for environments with thermal variability. Verify that the 256-byte page size fits the write algorithm constraints of the embedded software stack.

Memory IC Part Context

This part belongs to the GD25D40C/20C series of 3.3V Uniform Sector Standard and Dual Serial Flash memories. The series provides scalable storage solutions with densities ranging from 2M-bit to 4M-bit. It shares architectural similarities with other GD25 series parts but is distinct in its specific voltage requirements and package configurations offered by GigaDevice.

Memory IC Replacement Considerations

GD25D40CTIGR

Memory IC FAQ

What is the maximum clock frequency for fast read operations?

The maximum clock frequency for fast read operations is 104MHz when loaded with a 30pF capacitance.

How does the hardware write protection function?

Hardware write protection is enabled by driving the WP# pin low while the Status Register Protect (SRP) bit is set to 1, making the status register bits read-only.

What is the typical data retention period?

The device typically retains data for 20 years.