EmbeddedRelated.com
The 2026 Embedded Online Conference
AT25SF081B-SSHB-T

RENAT25SF081B-SSHB-T

Renesas Electronics Corporation
FLASH - NOR Memory IC 8Mbit SPI - Quad I/O 108 MHz 8-SOIC
Active48,713 in stock

Overview

The AT25SF081B-SSHB-T is an 8Mbit (1MB) SPI NOR Flash memory IC designed for non-volatile storage applications. It features a Quad I/O interface and supports clock frequencies up to 108 MHz, providing fast read and write operations. Operating from a 2.7V to 3.6V supply, this device is suitable for a wide range of embedded systems requiring reliable code and data storage.

Why Choose This Part

This NOR Flash memory offers a fast 108 MHz SPI - Quad I/O interface, enabling quick data access for demanding applications. It includes features like memory protection, user-definable protected areas, and OTP security registers for enhanced system security. With a typical run current of 3.3mA at 20MHz and low standby/shutdown currents, it is energy efficient.

Applications

Boot Code Storage
Ideal for storing system boot code in microcontrollers and embedded processors due to its fast read access and small form factor.
Firmware Updates
Suitable for over-the-air (OTA) or local firmware updates in connected devices, benefiting from its reliable non-volatile storage.
Data Logging
Can be used for storing configuration parameters, calibration data, or small amounts of logged sensor data in industrial and consumer electronics.
System Configuration Storage
Provides non-volatile storage for system settings and user preferences in various electronic devices.
Portable Devices
Its low power consumption in standby and deep power-down modes makes it suitable for battery-powered portable electronics.

Key Specifications

Technology FLASH - NOR
Memory Size 8Mbit
Memory Type Non-Volatile
Memory Format FLASH
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 108 MHz
Memory Interface SPI - Quad I/O
Voltage - Supply 2.7V ~ 3.6V
Memory Organization 1M x 8
Operating Temperature -40degC ~ 85degC (TC)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 50us, 2.4ms

Getting Started

To get started, integrate the AT25SF081B into your PCB design following the datasheet guidelines for SPI connections. Utilize standard development environments and toolchains that support serial NOR Flash programming via SPI. Manufacturers typically provide drivers or software libraries for easy integration with common microcontrollers.

Also Consider

W25Q80DVSSIG Winbond Electronics Corporation - This is a similar 8Mbit SPI NOR Flash with a wide operating voltage range and high performance.
The 2026 Embedded Online Conference