GD55LB01GEYIGR

Memory IC Overview

The GD55LB01GEYIGR is a 1 Gbit NOR flash memory device manufactured by GigaDevice. It utilizes an SPI interface with support for Single I/O, Quad I/O, QPI, and DTR modes. The component operates within a supply voltage range of 1.65 V to 2 V and supports a maximum clock frequency of 166 MHz. It features an 8-bit data bus width and is housed in an 8-WSON package (WSON-8). The device is designed for surface mount installation and functions reliably across an industrial temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed serial peripheral interface operations including Quad I/O, QPI, and Double Data Rate (DTR) modes for enhanced data throughput.
• Integrates hardware reset functionality and write protection mechanisms to ensure system stability and data integrity during operation.
• Includes security registers with One-Time Programmable (OTP) locks to protect firmware and sensitive configuration data.
• Features unique identification capabilities and suspend/resume functions to optimize power management and system responsiveness.

Memory IC Applications

• Code storage for microcontrollers and processors in embedded systems
• Data logging applications requiring non-volatile retention
• Industrial control systems operating in harsh environments
• Consumer electronics devices utilizing low-voltage power supplies

Memory IC Procurement Notes

Verify the specific suffix 'GR' against the manufacturer's official datasheet to confirm reel packaging specifications and tape dimensions. Ensure the 1.65V to 2V voltage domain aligns with your system's power rail requirements. Confirm that the WSON-8 package footprint matches your PCB design guidelines. Check for any regional export control classifications or RoHS compliance documentation required for your jurisdiction before finalizing procurement.

Memory IC Selection Notes

Select this component when a 1 Gbit density is required with a strict low-voltage constraint between 1.65 V and 2 V. The 166 MHz clock speed offers higher performance than standard 3V variants. Consider the WSON-8 package for compact board space constraints. Verify compatibility with existing SPI controllers supporting DTR modes if maximum bandwidth is necessary. Compare against the GD55B series if a 2.7V to 3.6V supply is available instead.

Memory IC Part Context

This part belongs to the GD55L series of SPI NOR flash memories, which are optimized for low-voltage applications. Unlike the standard GD55B series operating at 2.7V–3.6V, the GD55L series supports 1.65V–2.0V operation. This distinction is critical for power-sensitive designs. The device shares functional similarities with other GigaDevice NOR flashes but differs in voltage tolerance and specific interface timing characteristics defined in its dedicated datasheet.

Memory IC Replacement Considerations

GD55LB01GEYIG is a compatible variant with identical electrical specifications but may differ in packaging quantity or reel type. GD55B01GEYIGR operates at 2.7V–3.6V and requires voltage level shifting or a different power rail; it is not a direct pin-compatible drop-in replacement for low-voltage designs without circuit modification.