Renesas AT25DF011-XMHNGU-B

Overview

AT25DF011-XMHNGU-B from Renesas Electronics is a 1-Mbit SPI serial Flash memory IC designed for code shadowing and embedded data storage in low-voltage 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 rate with 6 ns clock-to-output delay, and features flexible erase granularity (256-byte page, 4-kByte/32-kByte blocks) for mixed code+data applications in industrial controllers and IoT edge nodes.

For engineers reviewing the AT25DF011-XMHNGU-B datasheet, AT25DF011-XMHNGU-B pinout, AT25DF011-XMHNGU-B application, or AT25DF011-XMHNGU-B equivalent, key selection criteria include dual-read throughput, ultra-low deep power-down current (200 nA), OTP security register usage, sector protection via WP pin, and compatibility with 1.65–3.6 V host interfaces requiring JEDEC-standard ID read capability.

Technical Context

The AT25DF011-XMHNGU-B implements a dedicated SPI interface with hardware-controlled write protection (WP pin) and HOLD suspend functionality, enabling robust command sequencing without host intervention during critical operations. Its dual-output read mode uses both SI and SO pins as outputs synchronized to SCK falling edges, doubling effective data throughput versus standard read.

Internally, it integrates a 128-byte OTP security register-64 bytes factory-programmed with unique device ID and 64 bytes user-programmable-for secure serialization and key storage. Erase architecture supports concurrent code and data partitioning via uniform 4-kByte and 32-kByte blocks plus fine-grained 256-byte pages, minimizing wasted space in firmware update and logging scenarios.

Key Specifications

Pinout & Package

AT25DF011-XMHNGU-B is packaged in an 8-lead SOIC (150-mil) with standard pinout compatible with JEDEC MS-012. All pins are electrically validated per datasheet Rev. J.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q10EW and MT25QL01GBBB8E12-0SIT, the AT25DF011-XMHNGU-B uniquely balances minimal power consumption (200 nA), dual-read acceleration, and precise 256-byte page erase-making it optimal for resource-constrained, battery-aware, and firmware-update-critical designs where density and octal complexity are unnecessary.

Availability

AT25DF011-XMHNGU-B is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical sensor data logging, automotive infotainment boot memory, and smart home gateway configuration requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT25DF011-XMHNGU-B 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 markets.

The AT25DF011-XMHNGU-B belongs to Renesas' AT25DF serial Flash family, engineered specifically for low-voltage, high-reliability embedded code and data storage with emphasis on power efficiency, security, and flexible erase architecture.

FAQ

What is the maximum operating frequency supported by the AT25DF011-XMHNGU-B?

The AT25DF011-XMHNGU-B supports a maximum operating frequency of 104 MHz for read, program, and erase operations. This applies to standard Read Array (0Bh), Dual-Output Read (3Bh), Page Erase (81h), Block Erase (20h/52h), and Chip Erase (60h/C7h) commands under specified voltage and temperature conditions per datasheet Rev. J Section 13.5.

Does the AT25DF011-XMHNGU-B support Dual-Output Read mode, and how is it enabled?

Yes, the AT25DF011-XMHNGU-B supports Dual-Output Read mode using the 3Bh opcode. When this command is issued, the SI pin functions as I/O0 (outputting LSB bits) while SO functions as I/O1 (outputting MSB bits), allowing two bits per SCK falling edge. No configuration register setting is required-activation is command-driven and fully compliant with SPI Mode 0/3 timing.

What is the purpose and structure of the OTP Security Register in the AT25DF011-XMHNGU-B?

The AT25DF011-XMHNGU-B contains a 128-byte OTP Security Register: 64 bytes are factory-programmed with a unique device identifier (used for serialization), and 64 bytes are user-programmable for secure storage of electronic serial numbers, cryptographic keys, or calibration data. Once programmed, OTP bytes cannot be altered, providing tamper-resistant identity binding.

How does hardware write protection work on the AT25DF011-XMHNGU-B?

Hardware write protection on the AT25DF011-XMHNGU-B is controlled by the WP (Write Protect) pin. When WP is driven low, it locks protected memory sectors and disables status register writes-even if software write-enable is asserted. The pin is internally pulled high, so leaving it unconnected defaults to unprotected mode; external pull-up to VCC is recommended unless protection is actively used.

What erase granularities does the AT25DF011-XMHNGU-B support, and why does that matter for firmware updates?

The AT25DF011-XMHNGU-B supports 256-byte page erase, 4-kByte block erase, 32-kByte block erase, and full chip erase. This granularity allows firmware updates to modify only changed code sections-minimizing erase time, reducing wear on unaffected sectors, and avoiding full-image rewrites. For example, a 2-kByte delta patch can be applied using two page erases instead of one 4-kByte block erase, preserving endurance and latency.