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GD25Q128ESIGR Package and Pinout Reference
The GD25Q128ESIGR is a 128M-bit (16M-byte) Serial Flash memory device from GigaDevice, featuring advanced SPI (Serial Peripheral Interface) capabilities including Dual and Quad I/O. Known for its high performance, reliability, and compact 8-SOIC footprint, this flash memory is engineered to meet the stringent demands of modern embedded systems, IoT devices, and industrial control applications. Its robust architecture provides efficient data storage, rapid access times, and extensive protection mechanisms, making it a critical component for code execution-in-place (XIP) and data logging.
Table of Contents
1. Overview and Core Features
The GD25Q128ESIGR operates on a standard 3.3V supply (typically 2.7V to 3.6V), offering high-speed clock frequencies up to 133MHz for Fast Read operations. When utilizing Quad SPI mode, it achieves equivalent clock rates of up to 532MHz, significantly enhancing data transfer bandwidth. Key features include:
- Capacity: 128M-bit (16M-byte) uniform sector architecture.
- Interface: Standard, Dual, and Quad SPI (Serial Peripheral Interface).
- Performance: Up to 133MHz clock frequency; high-speed continuous read mode.
- Reliability: 100,000 Program/Erase cycles; 20-year data retention.
- Security: Advanced hardware and software write protection; 3x1024-Byte Security Registers with OTP Locks.
- Package: 8-pin SOP (208mil) configuration, ensuring broad compatibility and easy PCB integration.
2. Specifications and Parameter Table
| Parameter | Value |
|---|---|
| Manufacturer | GigaDevice |
| Memory Size | 128 Mbit (16 MB) |
| Memory Interface | SPI, Dual SPI, Quad SPI |
| Clock Frequency | Up to 133 MHz |
| Supply Voltage | 2.7V ~ 3.6V |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) |
| Operating Temperature | -40°C ~ 85°C (Industrial) |
| RoHS Status | RoHS Compliant |
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The architecture of the GD25Q128ESIGR revolves around a high-efficiency memory core optimized for rapid read/write cycles. The memory array is organized into 256 programmable pages of 256 bytes each. Up to 256 bytes can be programmed simultaneously. The device supports flexible erase capabilities, allowing erasure in sectors (4KB), blocks (32KB/64KB), or the entire chip. It interfaces seamlessly with microcontrollers via a standard 4-wire SPI connection (CS#, CLK, SI, SO), which can be expanded to 6 wires for Quad SPI (incorporating IO2 and IO3/WP#), drastically reducing memory access latency and overhead.
4. Video: Feature Breakdown
5. Equivalents, Cross-Reference, and Lifecycle
The GD25Q128ESIGR is widely adopted and maintains an active lifecycle status. Due to its standardized JEDEC footprint and instruction set, it has numerous drop-in replacements. Direct equivalents often include the Winbond W25Q128JVSIQ and Macronix MX25L12835FM2I-10G. When substituting, engineers should verify software driver compatibility regarding exact device IDs, wait states, and specific OTP security register implementations, although basic read/write/erase routines are fundamentally identical across these components.
6. Frequently Asked Questions (FAQ)
What is the primary difference between standard SPI and Quad SPI in the GD25Q128ESIGR?
Standard SPI uses a single data pin for input and one for output, whereas Quad SPI utilizes four bidirectional data pins (IO0-IO3). This allows the GD25Q128ESIGR to transfer data four times faster per clock cycle in Quad mode, vastly improving execution-in-place (XIP) performance.
Can the GD25Q128ESIGR be used for Execute-in-Place (XIP)?
Yes, the GD25Q128ESIGR is highly optimized for XIP applications. Its Quad SPI interface and high clock speeds provide sufficient bandwidth for microcontrollers to fetch and execute code directly from the flash memory without shadowing to RAM.
What is the standby current of the GD25Q128ESIGR?
The GD25Q128ESIGR features an ultra-low standby current, typically around 1µA in Deep Power-Down mode, making it an excellent choice for battery-powered and power-sensitive IoT applications.
Alan Carter, Senior Hardware Engineer
Alan has over 15 years of experience in embedded systems design, specializing in ARM Cortex architectures, PCB routing for high-speed digital signals, and industrial IoT deployments. He frequently contributes technical teardowns and architecture comparisons.



