AT45DB011D-SH-T Equivalent & Substitute Parts

Part Overview

The AT45DB011D-SH-T is a 1Mbit FLASH memory IC manufactured by Renesas Electronics Corporation, designed for SPI interface applications operating at 66 MHz. This device features a 264-byte x 512-page memory organization in an 8-SOIC surface mount package. The part is currently classified as obsolete, necessitating identification of functionally compatible alternatives for ongoing design requirements and production continuity.

Substiute Parts

AT45DB011D-SH-T

Renesas Electronics CorporationIn Stock: 15529AT45DB011D-SH-T Datasheet

Current PartRFQ

AT45DB021E-SHN-T

Renesas Electronics CorporationIn Stock: 2436AT45DB021E-SHN-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT45DB011D-SH-T is determined by the following critical parameters:

• Memory Interface Compatibility: Both parts must support SPI protocol for direct firmware and hardware compatibility
• Package Compatibility: Identical 8-SOIC package ensures PCB layout and mechanical fit without redesign
• Voltage Supply Range: The substitute must operate within or encompass the original supply voltage window
• Operating Temperature Range: Thermal specifications must match or exceed the original range
• Memory Organization: Page size (264 bytes) must remain consistent for firmware compatibility

The AT45DB021E-SHN-T qualifies as a substitute based on these criteria. While it offers increased memory capacity (2Mbit vs 1Mbit) and higher clock frequency (70 MHz vs 66 MHz), these enhancements are backward-compatible with the original design requirements. The identical package footprint and SPI interface ensure direct replacement capability.

Parameter Comparison

Engineering Selection Recommendations

The AT45DB021E-SHN-T is the designated manufacturer-recommended substitute for the obsolete AT45DB011D-SH-T. Selection of this substitute is supported by the following factors:

• Product Status: The substitute maintains active production status, ensuring long-term availability and supply chain continuity
• Compliance: The AT45DB021E-SHN-T achieves ROHS3 compliance, meeting current regulatory requirements
• Electrical Compatibility: The expanded voltage supply range (1.65V ~ 3.6V) encompasses the original specification, ensuring operation across all original design conditions
• Thermal Compatibility: Identical operating temperature range (-40°C ~ 85°C) maintains thermal performance characteristics
• Package Equivalence: Identical 8-SOIC footprint and pinout enable direct PCB replacement without layout modification
• Interface Compatibility: SPI protocol implementation remains consistent, requiring no firmware modification for basic operation

Frequently Asked Questions (FAQ)

Q: Can the AT45DB021E-SHN-T be used as a direct drop-in replacement for the AT45DB011D-SH-T?

A: Yes. Both devices share identical 8-SOIC package dimensions, pinout configuration, and SPI interface protocol. No PCB redesign or firmware recompilation is required for basic substitution.

Q: What is the impact of the increased memory capacity (2Mbit vs 1Mbit)?

A: The substitute provides double the memory capacity with identical page organization (264 bytes). Existing firmware addressing the original 1Mbit space will function without modification. Additional memory capacity remains available for future application expansion.

Q: Are there voltage supply considerations when substituting?

A: The substitute operates across a wider voltage range (1.65V ~ 3.6V) compared to the original (2.7V ~ 3.6V). Designs operating within the original 2.7V ~ 3.6V window experience no change in electrical behavior. Designs requiring operation below 2.7V benefit from the expanded lower voltage limit.

Q: Does the higher clock frequency (70 MHz vs 66 MHz) require design changes?

A: No. The substitute's higher clock frequency is backward-compatible. Existing SPI interface timing configured for 66 MHz operation will function correctly with the 70 MHz capable device.

Q: What packaging format is available for the substitute?

A: The AT45DB021E-SHN-T is supplied in Tape & Reel (TR) packaging, standard for high-volume production environments.

Q: Are there compliance differences between the original and substitute?

A: The substitute achieves ROHS3 compliance, meeting current environmental and regulatory standards. Both devices maintain identical moisture sensitivity levels (MSL 1 - Unlimited) and REACH unaffected status.