Renesas AT25DF011-MAHNHR-T

Overview

AT25DF011-MAHNHR-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-MAHNHR-T datasheet, AT25DF011-MAHNHR-T pinout, AT25DF011-MAHNHR-T application, or AT25DF011-MAHNHR-T equivalent, key selection criteria include its 256-byte page erase granularity, 128-byte OTP security register with factory-programmed UID, ultra-deep power-down current (200 nA), and support for hardware write protection via WP pin in 8-pin SOIC, TSSOP, and UDFN packages.

Technical Context

The AT25DF011-MAHNHR-T implements a flexible multi-level erase architecture with uniform 4-kByte and 32-kByte blocks plus 256-byte pages, enabling efficient co-location of code and data without cross-contamination. Its Dual-Output Read mode uses both SI and SO pins as outputs, doubling data throughput versus standard SPI Read Array (03h) at up to 50 MHz.

Device operation relies on SPI command protocol with opcode-driven state transitions; all commands require CS assertion, MSB-first transmission, and CS deassertion to complete. Protection is enforced via hardware (WP pin) and software (Status Register bits), while OTP programming is irreversible and supports unique device serialization and secure key storage.

Key Specifications

Pinout & Package

AT25DF011-MAHNHR-T is packaged in an industry-standard 8-lead SOIC (150-mil) with gull-wing leads, RoHS-compliant and halogen-free. Pin mapping is identical across SOIC, TSSOP, and UDFN variants per Renesas datasheet Rev. J.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q80DVSSIG and MT25QL01GBBB8E12-0SIT, the AT25DF011-MAHNHR-T offers unique dual-output read bandwidth at 1-Mbit density with single 1.65–3.6 V operation - making it optimal for cost-sensitive, power-constrained designs where moderate capacity and deterministic low-latency reads are prioritized over raw density or quad/octal interfaces.

Availability

AT25DF011-MAHNHR-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical sensor data logging, automotive telematics bootloaders, and smart home gateway configuration requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for AT25DF011-MAHNHR-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, infrastructure, and IoT markets.

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

FAQ

What is the maximum operating frequency supported by the AT25DF011-MAHNHR-T for standard read operations?

The AT25DF011-MAHNHR-T supports a maximum clock frequency of 104 MHz for standard Read Array (03h) and Page Program operations. This enables high-throughput firmware loading and real-time data access in performance-sensitive applications. The device maintains timing compliance across its full 1.65–3.6 V supply range and -40 °C to +85 °C temperature grade.

Does the AT25DF011-MAHNHR-T support Dual-Output Read, and what is its operational limit?

Yes, the AT25DF011-MAHNHR-T supports Dual-Output Read using the 3Bh opcode, where both SI and SO pins act as data outputs. This mode operates up to 50 MHz and delivers two bits per clock cycle, effectively doubling read bandwidth compared to standard SPI Read Array. It is fully documented in the Renesas DS-AT25DF011-032 datasheet Rev. J.

How does the hardware write protection (WP pin) function on the AT25DF011-MAHNHR-T?

The WP pin on the AT25DF011-MAHNHR-T provides active-low hardware locking of protected memory sectors, independent of software-configured protection bits. When asserted (low), it prevents write/erase commands from modifying locked regions - even if the Status Register indicates unlocked state. This adds fail-safe protection against firmware errors or voltage glitches during critical operations.

What is the structure and purpose of the OTP security register in the AT25DF011-MAHNHR-T?

The AT25DF011-MAHNHR-T includes a 128-byte One-Time Programmable (OTP) security register: 64 bytes are factory-programmed with a unique device identifier (UID), and 64 bytes are user-programmable. Once written, OTP contents cannot be altered - enabling secure device serialization, electronic serial number (ESN) storage, and cryptographic key anchoring for anti-counterfeiting and firmware authentication.

What power-saving modes does the AT25DF011-MAHNHR-T offer, and what are their typical current draws?

The AT25DF011-MAHNHR-T offers Deep Power-Down (5 µA typical) and Ultra-Deep Power-Down (200 nA typical) modes. Both are entered via dedicated SPI commands (B9h and 79h respectively) and exited with CS toggle or specific wake sequences. These modes significantly extend battery life in intermittently active systems such as wireless sensors and portable diagnostics equipment.