GD25LQ64CVIGR Equivalent & Substitute Parts

Part Overview

The GD25LQ64CVIGR is a 64Mbit NOR Flash memory IC with SPI and Quad I/O interface capabilities, manufactured by GigaDevice Semiconductor (HK) Limited. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The part operates across industrial temperature ranges (-40°C to 85°C) and is housed in an 8-VSOP surface mount package. Identifying equivalent substitute parts is necessary due to the Last Time Buy status, which restricts long-term availability for new designs and production continuity.

Key Parameters

Parameter	Value
Memory Size	64Mbit
Memory Format	FLASH - NOR
Memory Interface	SPI - Quad I/O
Clock Frequency	120 MHz
Voltage Supply Range	1.65V ~ 2V
Operating Temperature	-40°C ~ 85°C
Package Type	8-SOIC (8-VSOP)
Write Cycle Time (Page)	2.4ms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the GD25LQ64CVIGR is determined by the following critical parameters:

Memory Capacity: 64Mbit (8M x 8 organization)
Memory Technology: FLASH - NOR
Interface Protocol: SPI with Quad I/O capability
Supply Voltage: 1.65V ~ 2V compatibility
Package Form Factor: 8-pin SOIC/SOP surface mount
Regulatory Compliance: RoHS3 compliance

The GD25LQ64ES2GR qualifies as a direct substitute based on matching memory capacity, technology, interface protocol, voltage specifications, and package footprint. Both parts are manufactured by the same vendor and maintain electrical and mechanical compatibility within the specified parameters.

Parameter Comparison

Parameter	GD25LQ64CVIGR (Main)	GD25LQ64ES2GR (Substitute)
Memory Size	64Mbit	64Mbit
Memory Format	FLASH - NOR	FLASH - NOR (SLC)
Memory Interface	SPI - Quad I/O	SPI - Quad I/O, QPI
Clock Frequency	120 MHz	133 MHz
Voltage Supply Range	1.65V ~ 2V	1.65V ~ 2V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 105°C
Package Type	8-VSOP	8-SOP
Write Cycle Time (Page)	2.4ms	2.4ms
Access Time	Not specified	6 ns
RoHS Status	ROHS3 Compliant	Not specified
Product Status	Last Time Buy	Active

Engineering Selection Recommendations

The GD25LQ64ES2GR is qualified as a direct substitute for the GD25LQ64CVIGR based on the following engineering criteria:

Electrical Compatibility: Both parts operate within identical supply voltage ranges (1.65V ~ 2V) and maintain the same memory capacity, organization, and interface protocol. The substitute part offers enhanced clock frequency (133 MHz versus 120 MHz), providing improved performance headroom without introducing incompatibility.

Thermal Performance: The GD25LQ64ES2GR supports an extended operating temperature range (-40°C ~ 105°C) compared to the main part (-40°C ~ 85°C), making it suitable for applications requiring broader thermal operation.

Product Lifecycle Status: The GD25LQ64ES2GR maintains Active product status with established supply channels, addressing the availability constraints of the Last Time Buy GD25LQ64CVIGR.

Package Compatibility: Both parts utilize 8-pin SOIC surface mount packages with identical footprints and pinout configurations, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the GD25LQ64ES2GR be used as a direct replacement for the GD25LQ64CVIGR without firmware modifications?

A: Yes. Both parts share identical memory capacity, interface protocol (SPI - Quad I/O), voltage specifications, and pinout configuration. The substitute part's higher clock frequency (133 MHz) and extended temperature range represent performance enhancements rather than functional changes.

Q: Are there package differences between the two parts?

A: Both parts use 8-pin SOIC surface mount packages with identical footprints (0.209" width, 5.30mm). The GD25LQ64CVIGR is specified as 8-VSOP while the GD25LQ64ES2GR is specified as 8-SOP; these designations refer to the same physical package form factor used in this product category.

Q: What is the significance of the QPI interface capability in the substitute part?

A: The GD25LQ64ES2GR includes QPI (Quad Peripheral Interface) in addition to standard SPI - Quad I/O. This represents an extended feature set that does not affect compatibility with existing SPI - Quad I/O implementations. Existing firmware requires no modification to operate the substitute part.

Q: Does the extended temperature range of the substitute part affect its use in standard industrial applications?

A: No. The GD25LQ64ES2GR's operating range (-40°C ~ 105°C) encompasses the GD25LQ64CVIGR's range (-40°C ~ 85°C). Applications designed for the original part operate within the substitute part's qualified temperature envelope.

Q: Are there any compliance or certification differences between the parts?

A: The GD25LQ64CVIGR is specified as ROHS3 compliant. Compliance information for the GD25LQ64ES2GR is not provided in the available technical parameters. Verification of regulatory compliance should be confirmed through the manufacturer's current documentation for the substitute part.

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