AT25DN256-SSHFGP-T Equivalent & Substitute Parts

Part Overview

The AT25DN256-SSHFGP-T is a 256Kbit FLASH memory IC manufactured by Renesas Electronics Corporation, designed for SPI serial interface applications. This non-volatile memory device operates at 104 MHz and is packaged in an 8-SOIC surface mount configuration. The part is currently in active production status with robust inventory availability. Substitute parts are identified when equivalent electrical and mechanical specifications align with the original component's functional requirements, enabling seamless integration in existing designs or addressing supply chain considerations.

Substiute Parts

AT25DN256-SSHFGP-T

Renesas Electronics CorporationIn Stock: 1040AT25DN256-SSHFGP-T Datasheet

Current PartRFQ

AT25DF256-SSHN-T

Renesas Electronics CorporationIn Stock: 8169AT25DF256-SSHN-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT25DN256-SSHFGP-T is determined by strict alignment of the following critical parameters:

• Memory capacity: 256Kbit
• Memory organization: 32K x 8 configuration
• Interface protocol: SPI serial interface
• Clock frequency: 104 MHz operation
• Package type: 8-SOIC surface mount with 3.90mm width
• Operating temperature range: -40°C to 85°C
• Regulatory compliance: ROHS3 and REACH status

The AT25DF256-SSHN-T meets all substitution criteria within these parameters. Variations in supply voltage range and page write cycle time do not preclude substitution when the application design accommodates the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

Both the AT25DN256-SSHFGP-T and AT25DF256-SSHN-T are active production components from Renesas Electronics Corporation with identical ROHS3 and REACH compliance certifications. Selection between these parts depends on application-specific requirements:

The AT25DN256-SSHFGP-T operates within a supply voltage range of 2.3V to 3.6V with a page write cycle time of 1.75ms. The AT25DF256-SSHN-T extends the lower supply voltage limit to 1.65V and has a page write cycle time of 2.5ms. Applications requiring operation at voltages below 2.3V must use the AT25DF256-SSHN-T. Applications with strict page write timing constraints below 2.5ms must use the AT25DN256-SSHFGP-T. For applications operating within 2.3V to 3.6V with page write timing tolerances of 2.5ms or greater, either part is functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can AT25DF256-SSHN-T replace AT25DN256-SSHFGP-T in all applications?

A: Substitution is valid when the application operates within the AT25DF256-SSHN-T supply voltage range (1.65V to 3.6V) and accommodates the page write cycle time of 2.5ms. If the original design requires supply voltages below 2.3V or page write times faster than 2.5ms, the AT25DN256-SSHFGP-T must be retained.

Q: Are the physical packages identical?

A: Both parts use the 8-SOIC package with 0.154" (3.90mm) width. PCB footprints and assembly processes are identical.

Q: What is the difference in supply voltage capability?

A: The AT25DF256-SSHN-T supports operation down to 1.65V, while the AT25DN256-SSHFGP-T minimum is 2.3V. Both support the same upper limit of 3.6V. This difference is relevant only for low-voltage applications.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory standards.

Q: What is the significance of the page write cycle time difference?

A: Page write cycle time affects the duration required to write a full page of data. The AT25DN256-SSHFGP-T completes page writes in 1.75ms, while the AT25DF256-SSHN-T requires 2.5ms. This difference is relevant only for applications with strict timing requirements for sequential write operations.