GD25Q128ESIGR

GD25Q128ESIGR 128Mbit SPI NOR Flash Memory Overview

The GD25Q128ESIGR is a 128Mbit (16MB) Serial NOR Flash memory device designed for embedded systems requiring reliable non-volatile storage. It uses a standard SPI (Serial Peripheral Interface) and is widely used for firmware storage, boot code, configuration data, and code execution-in-place (XIP) applications.

This device belongs to the GD25Q series, known for its stable performance, low power consumption, and compatibility with a wide range of microcontrollers and embedded platforms.

Key Features

• 128Mbit (16MB) non-volatile NOR Flash memory
• Standard SPI interface (supports multiple SPI modes depending on system design)
• High reliability for embedded firmware storage
• Low power consumption for portable and industrial applications
• Fast read performance suitable for code execution-in-place (XIP)
• Sector-based erase architecture for flexible memory management
• Typical compatibility with 3.0V power supply systems
• Industrial-grade operation (varies by configuration and supplier grading)

Package and Pin Configuration

The GD25Q128ESIGR is commonly supplied in a small surface-mount package suitable for compact PCB designs.

• Package type: SOP-8 / SOIC-8 (commonly used for this series, exact package depends on ordering code)
• Interface pins:
  • CS (Chip Select)
  • CLK (Serial Clock)
  • DI / IO0 (Data Input)
  • DO / IO1 (Data Output)
  • WP (Write Protect)
  • HOLD / IO3
  • VCC (Power Supply)
  • GND (Ground)

This compact 8-pin structure makes it suitable for space-constrained embedded systems.

Applications

The GD25Q128ESIGR is widely used in:

• Embedded system firmware storage
• IoT devices and smart modules
• Consumer electronics (TV, routers, set-top boxes)
• Industrial control systems
• Automotive electronics (non-safety-critical storage)
• BIOS and boot code storage in computing systems
• Networking equipment firmware storage

GD25Q128ESIGR Electrical Characteristics (General Reference)

Note: Exact electrical values may vary depending on manufacturer revision and datasheet version.

• Supply voltage: typically 2.7V to 3.6V
• Standard SPI operation with multiple read/write modes
• Page program and sector erase architecture
• Common erase unit: sector/block-based structure
• Endurance: typically up to 100,000 program/erase cycles (reference value)
• Data retention: typically up to 20 years under recommended conditions

For precise parameters, always refer to the official GigaDevice datasheet.

Ordering Information

The suffix ESIGR indicates specific packaging, environmental, and shipping formats defined by the manufacturer.

When ordering, always confirm:

• Package type (SOP-8 or equivalent)
• Temperature grade (industrial or commercial)
• Tape & reel vs tray packaging
• Manufacturer revision code

FAQ
What is GD25Q128ESIGR used for?

It is used for storing firmware, boot programs, configuration data, and embedded application code in electronic systems.

Is GD25Q128ESIGR compatible with other SPI flash chips?

Yes, it is generally compatible with standard SPI NOR flash interfaces, but firmware timing and command sets should always be checked against the datasheet.

What is the storage capacity of GD25Q128ESIGR?

It provides 128Mbit storage, which equals 16MB of data capacity.

Can GD25Q128ESIGR be used for code execution (XIP)?

Yes, many embedded systems use SPI NOR flash like this for execute-in-place applications depending on system architecture.

What is the difference between GD25Q128ESIGR and other GD25Q128 variants?

Differences usually relate to package type, temperature grade, or ordering format, while core memory architecture remains similar.

What voltage does GD25Q128ESIGR require?

It typically operates in the 3.0V class range (commonly 2.7V to 3.6V). Exact limits should be verified in the datasheet.

How is data written and erased in GD25Q128ESIGR?

Data is written in pages and erased in sectors or blocks, following standard NOR flash architecture.

Is GD25Q128ESIGR suitable for industrial use?

Yes, it is commonly used in industrial and embedded applications, depending on the selected grade and environmental specifications.

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