Renesas AT25XE041D-DWF

Overview

AT25XE041D from Renesas Electronics is a 4-Mbit SPI serial flash memory IC supporting 1.65 V–3.6 V operation, quad I/O (1-4-4/0-4-4) and eXecute-in-Place (XiP) modes, and 133 MHz max clock frequency - used for embedded boot code storage, firmware updates, and real-time data logging in battery-powered IoT edge nodes.

For engineers reviewing the AT25XE041D datasheet, AT25XE041D pinout, AT25XE041D application, or AT25XE041D equivalent, key selection criteria include multi-I/O timing compliance, ultra-deep power-down current (5–7 nA), page-erase granularity (256 bytes), and JEDEC SFDP support for automated configuration.

Technical Context

The AT25XE041D implements a dual-bus interface architecture with dedicated SRAM buffer (256 bytes) and configurable I/O drive strength, enabling concurrent command/address/data transfers in quad I/O and XiP modes. Its status register set (SR1–SR6) supports non-volatile/volatile control of protection, suspend/resume, and burst wrap behavior.

It integrates hardware reset (JEDEC-compliant), active status interrupt (RDY/BSY-driven), and Read-Modify-Write (RMW) command to emulate EEPROM-like byte-level writes without external erase management - all while maintaining full SPI mode 0/3 compatibility and dual/quad output read support.

Key Specifications

Pinout & Package

AT25XE041D is available in five RoHS-compliant packages: 8-lead SOIC (150-mil and 208-mil), 8-pad DFN (2 × 3 × 0.6 mm), 8-ball WLCSP (3 × 2 × 3 ball matrix), and die/wafer form. All variants share identical pin function mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q40EW and MT25QL04A, the AT25XE041D uniquely combines ultra-deep power-down (5–7 nA), hardware OTP security, and true 0-4-4 XiP - making it optimal for battery-constrained, secure, real-time embedded systems requiring deterministic latency and 20-year data retention.

Availability

AT25XE041D is available at Aetrix Electronics and suitable for firmware boot storage, IoT edge data logging, eXecute-in-Place (XiP) execution, secure device identity, and industrial firmware update applications requiring stable component supply and long-term lifecycle assurance.

Supply support for AT25XE041D 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets - with deep expertise in flash memory architecture and system-level reliability.

The AT25XE041D belongs to Renesas' AT25XE family of high-performance, low-voltage serial flash memories - engineered specifically for energy-efficient, secure, and real-time-critical embedded applications demanding extended data retention and flexible erase granularity.

FAQ

What is the minimum operating voltage for the AT25XE041D?

The AT25XE041D operates down to 1.65 V, enabling direct use with single-cell lithium batteries (e.g., LiFePO₄ or Li-ion) and low-dropout regulators in portable and energy-harvesting systems. This 1.65 V–3.6 V range avoids level-shifting circuitry and supports seamless integration into mixed-voltage SoC designs. The AT25XE041D maintains full functionality-including 133 MHz quad I/O and ultra-deep power-down-at the 1.65 V lower limit.

Does the AT25XE041D support true eXecute-in-Place (XiP) operation?

Yes, the AT25XE041D supports true XiP via its 0-4-4 command format, which eliminates opcode transmission after initial setup and enables continuous high-speed instruction fetch. Combined with 133 MHz quad I/O and 256-byte SRAM buffer, this allows deterministic sub-100 ns access latency - verified across -40°C to +85°C. The AT25XE041D's XiP mode is fully compliant with JEDEC JESD216B SFDP v1.6 for automatic host configuration.

How does the Read-Modify-Write (RMW) command work in the AT25XE041D?

The AT25XE041D's RMW command (0Ah) performs an atomic byte-level write without requiring separate read-erase-program sequences. Internally, it reads the target page into the 256-byte SRAM buffer, modifies the specified byte(s), erases the page, and reprograms it - all in one command. This eliminates external software overhead and guarantees data consistency during power loss. The AT25XE041D executes RMW in under 5 ms (typical), matching EEPROM usability while retaining flash endurance.

What power-saving modes does the AT25XE041D offer, and what are their current draws?

The AT25XE041D offers three low-power states: Standby (30 µA typical), Deep Power-Down (DPD, 8.5 µA typical), and Ultra-Deep Power-Down (UDPD, 5–7 nA typical). UDPD is entered via 79h command and exited with ABh - preserving all register states and memory contents. These modes are fully operational across the -40°C to +85°C range. The AT25XE041D's 5–7 nA UDPD current is among the lowest in its class, enabling decade-long battery life in always-on sensor nodes.

Can the AT25XE041D be used in automotive applications?

The AT25XE041D is rated for -40°C to +85°C operation and qualified to industrial reliability standards, but it is not AEC-Q100 qualified. It supports automotive-adjacent applications such as infotainment head units, telematics gateways, and body control modules where extended temperature range and 20-year data retention are required - provided system-level qualification is performed. For ASIL-B/C domains, Renesas offers AEC-Q100 qualified variants in the same AT25XE family; the AT25XE041D itself is intended for industrial and consumer-grade automotive-ecosystem products.