GD25LQ128DSIG

Memory IC Overview

The GD25LQ128DSIG is a 128M-bit (16M x 8) NOR flash memory manufactured by GigaDevice. It operates on a single 1.65V to 2.0V power supply and features a uniform sector architecture with 4K-byte sectors and 32/64K-byte blocks. The device supports Standard, Dual, Quad SPI, and QPI interfaces with a maximum clock frequency of 120MHz. It utilizes an 8-SOP package and is rated for industrial temperatures ranging from -40°C to +85°C.

Memory IC Feature Summary

• Supports standard, dual, quad SPI, and QPI modes for flexible data transfer rates
• Features uniform sector architecture allowing granular erase operations
• Includes hardware and software write protection mechanisms via WP# pin and status register bits
• Provides advanced security features including unique ID and programmable security registers

Memory IC Applications

• Code storage in embedded systems requiring execute-in-place capability
• Industrial control applications operating within specified temperature ranges
• Consumer electronics utilizing low-voltage power supplies
• Firmware storage for microcontrollers and system-on-chip designs

Memory IC Procurement Notes

Verify the specific suffix 'SIG' corresponds to the SOP-8 package and industrial temperature grade (-40°C to +85°C). Confirm that the component is suitable for new designs as some distributors list this variant as not recommended for new designs due to potential minimum order quantity restrictions or lifecycle status changes. Ensure voltage requirements align with the 1.65V to 2.0V specification.

Memory IC Selection Notes

Select this component when a 128M-bit density is required with a 1.8V nominal supply voltage. The SOP-8 package is appropriate for through-hole or standard surface-mount assembly where space allows. Consider the 120MHz clock speed for high-throughput read applications. Verify compatibility with the host controller's SPI interface capabilities, particularly regarding Quad I/O and QPI mode support if higher speeds are needed.

Memory IC Part Context

This part belongs to the GD25LQ128D series, which is designed for 1.8V operation. It shares architectural similarities with other devices in the GD25LQ family but differs in voltage range and package options. The 'S' indicates the SOP package, while 'I' denotes the industrial temperature range. This series targets applications needing reliable non-volatile storage with moderate density and low power consumption.

Memory IC Replacement Considerations

GD25LQ128DSIGR: Same electrical specifications and functionality but supplied in Tape & Reel packaging instead of Tube.

Memory IC FAQ

What is the difference between Quad SPI and QPI modes?

Quad SPI uses four I/O pins for data transfer but retains standard command codes over two pins. QPI mode switches all four I/O pins to handle both commands and data, potentially increasing throughput but requiring specific enable/disable commands.

How is write protection implemented in this device?

Write protection can be achieved via software using Block Protect (BP) bits in the Status Register or via hardware by driving the WP# pin low. Hardware protection locks the Status Register bits against modification.