Product Details The AT25SF161-SSHD-T is a 16Mbit SPI serial Flash memory device designed for non-volatile program code and data storage in embedded electronic systems. It provides a compact memory solution for applications where firmware, configuration information and other system data need to remain available after power is removed.The device has a 16Mbit memory density and supports Single, Dual and Quad SPI interfaces. This flexible serial interface allows the Flash memory to connect with compatible microcontrollers and processors while providing different data transfer configurations according to system requirements.The AT25SF161-SSHD-T operates from a 2.5V to 3.6V supply range and supports operating frequencies up to 104MHz. Its SPI architecture makes it suitable for embedded designs where a dedicated parallel memory bus would require additional board space and routing.The memory device is designed for both program-code storage and general data storage. Renesas describes the AT25SF161 as suitable for systems in which program code is shadowed from Flash into embedded or external RAM for execution. Its erase architecture also allows the device to be used for storing application data without requiring a separate storage device.Power consumption is another consideration for embedded designs. The AT25SF161-SSHD-T provides a deep power-down mode with typical current consumption of 2µA, helping reduce standby power when the memory device is not actively being accessed.The AT25SF161-SSHD-T is supplied in an 8-lead SOIC-N package with 1.27mm pitch and package dimensions of approximately 3.81mm × 4.80mm. It is specified for an industrial temperature range of -40°C to +85°C, making it suitable for a variety of embedded and electronic control applications.Typical applications include embedded controllers, consumer electronics, industrial equipment, IoT devices, communication products and electronic instruments. The device can store firmware, boot information, configuration parameters and other non-volatile application data.For new designs, engineers should carefully check component availability because Renesas currently lists AT25SF161-SSHD-T as obsolete. Existing equipment, maintenance programs and legacy designs may still require this specific ordering code, making accurate part-number identification important when sourcing replacement inventory.