A: The GD25D10CEIGR is engineered for high performance with very low power consumption. The table below summarises its core specifications, drawn directly from manufacturer data and multiple distributor sources: Specification Value Memory Density 1 Mbit (128 Kbyte) Memory Organization 128K × 8 bits Memory Technology FLASH - NOR (Non‑Volatile) Memory Interface SPI - Dual I/O (Standard and Dual SPI) Max. Clock Frequency (fC) 100 MHz Supply Voltage (VCC) 2.7V to 3.6V Read Current (Active) 20 mA (max) Standby Current 0.1 µA (typical) Page Size 256 bytes Page Program Time (Tpp) 0.7 ms (max) Sector Erase Time (32KB) 0.3 s (max) Erase Capabilities Uniform 4KB sectors and 32KB blocks Endurance 100,000 program/erase cycles (minimum) Data Retention 20 years (minimum) Operating Temperature (Industrial) –40°C to +85°C (TA) Package Type 8‑pad USON (2 × 3 mm) with exposed pad Moisture Sensitivity Level (MSL) 3 (168 hours) RoHS Status ROHS3 Compliant Key additional features and design considerations include: Software and hardware write protection: The device includes a Write Enable Latch (WEL) bit, configurable block protection bits (BP2, BP1, BP0) in the Status Register, and a dedicated Write Protect (WP#) pin for hardware protection of the memory array. Hold Function (HOLD#): A dedicated pin allows the host to pause an ongoing serial communication without resetting the ongoing instruction, which is particularly useful in multi‑device SPI bus systems where the bus may need to be temporarily shared for higher‑priority tasks. Dual I/O Mode for Faster Reads: In Dual SPI (Dual I/O) mode, the SI and SO pins become bidirectional I/O pins (IO0 and IO1) for 2‑bit per cycle transfers, effectively doubling the read data rate to 200 Mbps without increasing the clock frequency, enhancing system performance. Uniform Sector Architecture: The device features uniform 4KB sectors for granular erase operations, minimising write amplification and extending effective device lifetime in data‑logging applications. Ultra‑Low Standby Current: With a typical standby current of just 0.1 µA, the device is exceptionally well‑suited for battery‑powered and energy‑harvesting applications where every microampere of power consumption matters.

A: The device uses a standard 4‑wire Serial Peripheral Interface (SPI) bus for communication, operating in either SPI Mode 0 (CPOL=0, CPHA=0) or Mode 3 (CPOL=1, CPHA=1) for maximum compatibility with a wide range of microcontrollers and SoCs. The interface consists of the following signals: Pin Signal Group Function CS# (Chip Select) Enables the device when driven low SCLK (Serial Clock) Provides the clock signal for data transfer (up to 100 MHz) SI / IO0 Serial data input (I/O0 in Dual I/O mode) SO / IO1 Serial data output (I/O1 in Dual I/O mode) WP# / IO2 Hardware write protect pin HOLD# / IO3 Pauses an ongoing serial communication without resetting the ongoing instruction The device supports multiple flexible interface modes: Standard SPI (Single I/O): Uses separate SI (data in) and SO (data out) pins for 1‑bit transfers. Compatible with virtually all SPI controllers. Dual I/O (Dual SPI): The SI and SO pins become bidirectional I/O pins (IO0 and IO1) for 2‑bit per cycle transfers, effectively doubling the data rate. Communication is initiated by driving the Chip Select (CS#) pin low. The host then sends an instruction byte, followed by address and data bytes depending on the operation. The Continuous Read Mode allows efficient memory access, enabling true Execute‑In‑Place (XIP) operation where the host can execute code directly from the flash without copying it to RAM first, reducing system memory requirements. The Hold (HOLD#) function allows the host to pause an ongoing serial communication without resetting the ongoing instruction, which is particularly useful in multi‑device SPI bus systems where the bus may need to be temporarily shared for higher‑priority tasks. During a Hold condition, the device ignores transitions on the SCLK pin and the SI pin, while the SO pin enters a high‑impedance state, allowing other devices to use the SPI bus without contention.

A: The GD25D10CEIGR is built on reliable NOR Flash technology and engineered for long‑term data integrity. Key reliability figures include: Reliability Parameter Specification Write/Erase Endurance 100,000 program/erase cycles (minimum) per sector Data Retention 20 years (minimum) Write Cycle Time – Page (Tpp) 0.7 ms (max) for a 256‑byte page Sector Erase Time (4KB) Not specified, but 32KB block erase: 0.3 s (max) Operating Temperature (Industrial) –40°C to +85°C Moisture Sensitivity Level (MSL) 3 (168 hours) – Standard handling required RoHS Status ROHS3 Compliant These reliability figures meet industry‑standard requirements for NOR Flash technology. The device also includes hardware and software write protection features, a Write Enable Latch (WEL) , and configurable block protection via status register bits, ensuring data integrity in mission‑critical systems. The uniform sector architecture (4KB sectors) allows for highly granular erase operations, minimising write amplification and extending effective device lifetime in data‑logging applications. However, it is important to note that the device does NOT have on‑chip ECC (Error Correction Code); any required ECC must be implemented in the host controller for applications that require enhanced error detection and correction beyond the standard reliability specifications. For applications that require on‑chip ECC, the GD25D10CEEG variant includes built‑in ECC logic for simplified system design.

A: The GD25D10CEIGR is well‑suited for a wide range of embedded applications requiring reliable, non‑volatile code and data storage in a space‑constrained and power‑sensitive package. Its ultra‑small 2×3 mm USON footprint, low 20 mA active current, ultra‑low 0.1 µA standby current, and industrial temperature range make it ideal for battery‑operated portable equipment. Typical applications include: Firmware and boot code storage – Bootloaders, BIOS, and application code in embedded systems, supporting IAP (In‑Application Programming) and OTA (Over‑The‑Air) upgrades. Execute‑In‑Place (XIP) operation – Direct code execution from Dual SPI flash without copying to RAM, reducing system memory requirements and improving boot times. Data logging – Storing sensor data, event logs, and system parameters in industrial control systems, environmental monitors, and battery‑powered portable devices. Configuration parameter storage – Device settings, calibration constants, and user preferences in consumer electronics, medical devices, and IoT sensor nodes. Industrial control systems – PLCs, HMIs, data loggers, and factory automation equipment requiring compact, reliable code storage in harsh environments. Consumer electronics – Smart TVs, set‑top boxes, digital cameras, gaming consoles, wearables, and smart speakers. Internet of Things (IoT) devices – Wi‑Fi modules, Bluetooth modules, smart home controllers, and sensor nodes benefiting from the device's ultra‑low standby power (0.1 µA typical), enabling extended battery life. Medical devices – Diagnostic equipment, patient monitors, and portable instruments. ⚠️ Important Lifecycle Information: The product lifecycle status for the GD25D10CEIGR is contradictory across multiple authoritative distributor and manufacturer sources: Oneyac explicitly lists the part as "该型号已停产！" (Discontinued / Obsolete), while also stating a production lead time of 12 weeks and listing the supply and demand status as "To Be Produced". Win‑Source lists the "Supply and Demand Status" as "Limited" and estimates a 19‑week production lead time. DigiKey does not list this exact part number at all (DigiKey lists the GD25D10CTIGR in SOP‑8 package, not the GD25D10CEIGR in USON package). Mouser also does not list this exact part number; Mouser lists the GD25D10CEIGR as a specific product but Mouser's search for the GD25D10C series shows limited availability for the package variant. LCSC (Shenzhen) lists the part status as "SMT扩展库" with stock quantity of 0 units, while LCSC's parent company JLC (嘉立创) shows 0 stock. Given the contradictory lifecycle reports (Discontinued / Obsolete by Oneyac vs. Limited with 19 weeks lead time by Win‑Source), engineers are strongly advised to verify current lifecycle status, availability, and lead times directly with an authorised GigaDevice distributor (such as LCSC, Mouser, or DigiKey) before committing this part to a new high‑volume design. For projects requiring long‑term supply assurance, the following pin‑compatible alternatives are recommended: Alternative Part Manufacturer Package Notes GD25D10CEIGR (same part) GigaDevice USON‑8 (2×3 mm) Verify current availability before use GD25D10CTIGR GigaDevice SOP‑8 Same 1Mbit SPI NOR Flash, SOP‑8 package, Active production with thousands in stock GD25D10CTIGR (DigiKey) GigaDevice SOP‑8 Listed as Active by DigiKey with 8‑week standard lead time GD25D10CEEG GigaDevice USON‑8 (2×3 mm) Same package and density, includes built‑in ECC for enhanced reliability IS25LQ010B-JNLE ISSI USON‑8 (2×3 mm) 1Mbit SPI NOR Flash, industrial temperature, active production W25X10CLUXIG Winbond USON‑8 (2×3 mm) 1Mbit SPI NOR Flash with Dual I/O, industrial temperature, active production For legacy systems already using the GD25D10CEIGR, remaining inventory may still be available through specialty distributors (Win‑Source reports 38,907 pieces in stock as of June 2025, and Shenzhen Memory Semiconductor reports 6,087 pieces in stock). However, long‑term supply cannot be assumed. Qualification of a replacement part is strongly recommended for any new or upgraded production. For new designs requiring active supply assurance, the GD25D10CTIGR (SOP‑8 package, same 1Mbit SPI NOR Flash) is the recommended drop‑in replacement, as it is listed as Active by DigiKey with an 8‑week manufacturer standard lead time and significant inventory in stock. If the USON‑8 package is mandatory, the GD25D10CEEG (includes built‑in ECC) or IS25LQ010B-JNLE from ISSI offer active production status with the same 2×3 mm USON‑8 package and pin compatibility, allowing a straightforward board‑level replacement without layout changes.