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Renesas Electronics AT45DB041E-SSHN2B-T — DC-DC Power Modules

AT45DB041E-SSHN2B-T 4Mbit SPI Flash, 85 MHz, 8-SOIC

MPNAT45DB041E-SSHN2B-T
End of Life

Adesto (now Dialog) AT45DB041E-SSHN2B-T, 4Mbit SPI FLASH, 85 MHz, 1.65-3.6V, -40 to 85°C, 8-SOIC.

$1.38Ref. price · indicative, final on quote
Renesas Electronics AT45DB041E-SSHN2B-T datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AT45DB041E-SSHN2B-T specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage1.65V ~ 3.6V
Clock frequency85 MHz
Memory interfaceSPI
Operating temperature-40°C ~ 85°C (TC)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyFLASH
Memory size4Mbit
Memory formatFLASH
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization256 Bytes x 2048 pages
Write cycle time - word, page8µs, 3ms

Product details

What this 4 Mbit SPI Flash is for

The AT45DB041E-SSHN2B-T is a 4 Mbit serial Flash memory from Adesto (now part of Dialog Semiconductor), organised as 256 bytes per page across 2048 pages. It communicates over a standard SPI bus at up to 85 MHz, making it a drop-in code or data storage companion for any MCU with an SPI peripheral — common in IoT edge nodes, industrial sensors, and embedded control boards that need non-volatile storage for firmware images, configuration tables, or data logs.

8-pin SOIC narrow body (3.90 mm width), surface-mount. Standard reflow profile; no underfill needed. Footprint matches legacy 8-SOIC Flash parts.

The part is ROHS3 compliant.

Frequently asked questions

Can AT45DB041E-SSHN2B-T be used in a 3.3V system?

Yes. The supply range is 1.65 V to 3.6 V, so a 3.3 V rail is well within spec. The SPI I/O levels track VCC, so no level translation is needed when connecting to a 3.3 V MCU.

What is the replacement or equivalent for AT45DB041E-SSHN2B-T?

The closest functional equivalent is the AT45DB041E-SSHN-T, which shares the same 4 Mbit density, 85 MHz SPI speed, 8-SOIC package, and -40°C to 85°C temperature range. The difference is the memory organisation: 264 bytes per page on the -SSHN-T versus 256 bytes per page on the -SSHN2B-T. Verify page size compatibility with your firmware before substituting.

How do I interface AT45DB041E-SSHN2B-T with an Arduino?

Connect the SPI pins (MOSI, MISO, SCK, CS) to the Arduino's hardware SPI header. Use the standard SPI library; set the clock divider for 8 MHz or lower (the part runs at 85 MHz, but Arduino SPI tops out around 8-16 MHz). The 256-byte page size maps naturally to the library's page read/write functions. No level shifter needed if the Arduino runs at 3.3 V.