Renesas AT25DF011-SSHNHR-T

Overview

AT25DF011-SSHNHR-T from Renesas Electronics is a 1-Mbit SPI serial Flash memory IC designed for code shadowing and embedded data storage in resource-constrained systems. It operates from 1.65 V to 3.6 V, supports SPI Modes 0/3 and Dual-Output Read, delivers 104 MHz max clock frequency, and achieves 6 ns clock-to-output timing - enabling fast boot and firmware update in industrial controllers and IoT edge nodes.

For engineers reviewing the AT25DF011-SSHNHR-T datasheet, AT25DF011-SSHNHR-T pinout, AT25DF011-SSHNHR-T application, or AT25DF011-SSHNHR-T equivalent, key selection criteria include its 256-byte page erase granularity, 200 nA ultra-deep power-down current, OTP security register with factory-programmed unique ID, and support for hardware write protection via WP pin in 8-lead SOIC package.

Technical Context

The AT25DF011-SSHNHR-T implements a flexible three-tier erase architecture (256-byte page, 4-kByte block, 32-kByte block) optimized for mixed code-and-data storage, minimizing wasted sectors. Its Dual-Output Read mode uses both SI and SO pins as outputs to deliver two bits per SCK falling edge, doubling read throughput versus standard SPI Read Array (03h).

Command execution relies on SPI master-initiated opcodes (e.g., 3Bh for Dual-Output Read, 81h for Page Erase), with all transfers MSB-first. The device integrates hardware-controlled sector locking via the active-low WP pin and supports software status register configuration for protection granularity and deep power-down entry/exit.

Key Specifications

Pinout & Package

AT25DF011-SSHNHR-T is packaged in an industry-standard 8-lead SOIC (150-mil) with gull-wing leads, compatible with automated PCB assembly and reflow processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial Flash memory applications.

Compared with W25Q80DVSSIG and MX25L1006EM1I-12G, the AT25DF011-SSHNHR-T uniquely combines 1-Mbit density with Dual-Output Read, 200 nA ultra-deep power-down, and factory-programmed unique ID - making it optimal for space-, power-, and security-constrained embedded systems where firmware integrity and low-energy operation are critical.

Availability

AT25DF011-SSHNHR-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic sensors, smart utility meters, and automotive body control modules requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for AT25DF011-SSHNHR-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT applications.

The AT25DF011-SSHNHR-T belongs to Renesas' serial Flash memory product line, engineered specifically for reliable, low-power, and secure code and data storage in space-constrained embedded systems.

FAQ

What is the maximum operating frequency supported by the AT25DF011-SSHNHR-T?

The AT25DF011-SSHNHR-T supports a maximum operating frequency of 104 MHz for Read, Page Erase, Block Erase, and Chip Erase commands. This high clock rate enables rapid firmware loading and system boot times, especially when used with Dual-Output Read mode (3Bh opcode) to achieve doubled data throughput compared to standard SPI Read Array (03h).

Does the AT25DF011-SSHNHR-T include hardware write protection?

Yes, the AT25DF011-SSHNHR-T includes hardware write protection via the active-low WP pin. When asserted, it locks protected memory sectors regardless of software state or power conditions. The WP pin is internally pulled high, allowing it to be left floating if unused - though Renesas recommends connecting it to VCC for noise immunity in production designs.

How does the Dual-Output Read feature work on the AT25DF011-SSHNHR-T?

The AT25DF011-SSHNHR-T implements Dual-Output Read using the 3Bh opcode, which configures both the SI (I/O0) and SO (I/O1) pins as outputs. During each falling edge of SCK, two bits of data are clocked out simultaneously - one on SI and one on SO - effectively doubling read bandwidth over standard single-output SPI modes while maintaining full command compatibility.

What is the purpose of the OTP Security Register in the AT25DF011-SSHNHR-T?

The 128-byte OTP Security Register in the AT25DF011-SSHNHR-T provides permanent, one-time programmable storage: 64 bytes are factory-programmed with a unique device identifier for serialization, and 64 bytes are user-programmable for secure keys, calibration data, or electronic serial numbers - all resistant to overwrite or readback after programming.

What power-saving modes does the AT25DF011-SSHNHR-T support?

The AT25DF011-SSHNHR-T supports Deep Power-Down (5 µA typical) and Ultra-Deep Power-Down (200 nA typical) modes, entered via dedicated commands (B9h and 79h). These modes retain full memory contents while reducing current draw to nanoamp levels - essential for battery-powered IoT endpoints and energy-harvesting systems where multi-year operation is required.