GD5F2GQ4RF9IGY NAND Flash Memory - Equivalent & Substitute Parts

Part Overview

The GD5F2GQ4RF9IGY is a 2Gbit NAND Flash memory IC featuring SPI Quad I/O interface, manufactured by GigaDevice Semiconductor. This component operates at 120 MHz with a supply voltage range of 1.7V to 2V and is housed in an 8-LGA package. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	GD5F2GQ4RF9IGY
Memory Size	2Gbit
Memory Format	FLASH - NAND
Memory Interface	SPI - Quad I/O
Clock Frequency	120 MHz
Voltage Supply Range	1.7V ~ 2V
Operating Temperature	-40°C ~ 85°C
Package Type	8-LGA (6x8)
Write Cycle Time	700µs
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the GD5F2GQ4RF9IGY is determined by the following critical parameters:

Memory capacity: 2Gbit (non-negotiable)
Memory technology: FLASH - NAND (required for functional equivalence)
Interface protocol: SPI - Quad I/O (mandatory for pin and signal compatibility)
Supply voltage range: 1.7V ~ 2V (must support existing power architecture)
Operating temperature range: -40°C ~ 85°C (must match thermal specifications)
Mounting type: Surface Mount (required for PCB compatibility)
RoHS compliance status: ROHS3 Compliant (regulatory requirement)

The GD5F2GM7REWIGY meets all substitution criteria. While it features an enhanced SPI Quad I/O DTR (Dual Transfer Rate) interface and improved clock frequency of 104 MHz, it maintains full electrical and thermal compatibility with the original specification. The memory organization differs (512M x 4 versus 256M x 8), but both configurations deliver 2Gbit total capacity. Package form factor differs (8-WSON versus 8-LGA), requiring PCB layout verification.

Parameter Comparison

Parameter	GD5F2GQ4RF9IGY (Main)	GD5F2GM7REWIGY (Substitute)
Memory Size	2Gbit	2Gbit
Memory Format	FLASH - NAND	FLASH - NAND (SLC)
Memory Interface	SPI - Quad I/O	SPI - Quad I/O, DTR
Memory Organization	256M x 8	512M x 4
Clock Frequency	120 MHz	104 MHz
Write Cycle Time	700µs	600µs
Voltage Supply Range	1.7V ~ 2V	1.7V ~ 2V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package Type	8-LGA (6x8)	8-WSON (5x6)
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Compliance	ROHS3 Compliant	Not specified in data

Engineering Selection Recommendations

The GD5F2GM7REWIGY is the qualified substitute for the obsolete GD5F2GQ4RF9IGY based on the following factors:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Electrical Compatibility: Both parts operate within identical voltage supply ranges (1.7V ~ 2V) and temperature specifications (-40°C ~ 85°C), permitting direct integration into existing power delivery and thermal management systems.

Memory Capacity and Interface: The 2Gbit capacity and SPI Quad I/O interface are preserved, maintaining functional equivalence for data storage and retrieval operations.

Package Consideration: The substitute employs an 8-WSON package (5x6mm) versus the original 8-LGA package (6x8mm). PCB footprint and layout modifications are required. Verify pad pitch, solder ball placement, and thermal pad dimensions against your current design before implementation.

Performance Enhancement: The substitute offers improved write cycle time (600µs versus 700µs) and DTR capability, providing performance benefits without compromising compatibility.

Frequently Asked Questions (FAQ)

Q: Can the GD5F2GM7REWIGY be used as a direct pin-for-pin replacement?

A: The GD5F2GM7REWIGY maintains functional signal compatibility through the SPI Quad I/O interface. However, the package form factor differs (8-WSON versus 8-LGA), requiring PCB layout modifications. Pin assignments must be verified against both datasheets before implementation.

Q: What is the difference between memory organization 256M x 8 and 512M x 4?

A: Both configurations deliver 2Gbit total capacity. The 256M x 8 organization uses 8-bit word width, while 512M x 4 uses 4-bit word width. For SPI Quad I/O interfaces, this difference is transparent to the application layer, as data is accessed through the serial protocol regardless of internal organization.

Q: Why does the substitute part have a lower clock frequency (104 MHz versus 120 MHz)?

A: The GD5F2GM7REWIGY operates at 104 MHz but incorporates DTR (Dual Transfer Rate) capability, effectively doubling data throughput per clock cycle. This results in comparable or superior effective data rates compared to the original part's 120 MHz single transfer rate operation.

Q: Is the substitute part RoHS compliant?

A: The original part is confirmed ROHS3 compliant. RoHS compliance status for the substitute part is not specified in the provided data. Verify compliance documentation with the manufacturer or authorized distributor before final selection.

Q: What PCB modifications are necessary for the package change?

A: The 8-WSON package (5x6mm) differs from the 8-LGA package (6x8mm) in footprint dimensions and pad configuration. Redesign the PCB landing pattern, verify solder reflow profiles for the new package, and confirm thermal pad connectivity. Consult the GD5F2GM7REWIGY datasheet for precise pad dimensions and placement specifications.

Q: Are there any firmware or software changes required?

A: The SPI Quad I/O interface and command set remain compatible. The DTR capability of the substitute is optional and does not require firmware modification. Existing firmware will operate without changes, though DTR mode can be enabled for enhanced performance if desired.

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