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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Renesas M10042040108X0IWAR

Name: M10042040108X0IWAR
Brand: Renesas
SKU: M10042040108X0IWAR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M10042040108X0IWAR

Manufacturer:: Renesas

Category:: Memory

Package:: 8-VDFN Exposed Pad

Datasheet:: M10042040108X0IWAR.pdf

Description:: IC RAM 4MBIT SPI 108MHZ 8DFN

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Inventory:3,057

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Product details

Overview

M10042040108X0IWAR from Renesas is a 4Mb serial STT-MRAM non-volatile memory IC with QSPI interface, 108MHz SDR operation, 1.71–2.0V supply, industrial temperature range (−40°C to +85°C), and 8-pad DFN (WSON) package. It delivers SRAM-compatible read/write timing with persistent data retention for real-time data logging in factory automation controllers.

For engineers reviewing the M10042040108X0IWAR datasheet, M10042040108X0IWAR pinout, M10042040108X0IWAR application, or M10042040108X0IWAR equivalent, key selection criteria include QSPI x4 interface support, hardware write-protect (WP#) pin, 256-byte augmented storage array, JEDEC reset compliance, and 40nm pMTJ process enabling >10¹⁵ write cycles.

Technical Context

The M10042040108X0IWAR implements a quad SPI (QPI) interface with 4-4-4 command-address-data configuration, supporting both SDR (108MHz) and DDR (54MHz) modes. Its architecture integrates a dedicated high-voltage generator for MRAM switching and dual power domains for core (1.8V) and I/O (1.8V) operation.

It features eXecute-In-Place (XIP) mode to eliminate per-access command overhead, two low-power states (Deep Power Down, Hibernate) with full configuration retention, and independent 256-byte augmented storage array with per-section write protection-enabling secure device identification and firmware metadata storage without consuming main memory space.

Key Specifications

Parameter	Value and Actual Design Meaning
Density	4 Mbit (512 KB); supports byte/word/page writes without erase cycles
Interface	Quad SPI (QPI, 4-4-4); enables 432 MB/s peak bandwidth in SDR mode
Max Clock Frequency	108 MHz SDR; reduces random access latency to ≤35 ns vs. Flash
Supply Voltage	1.71 V – 2.00 V; compatible with modern low-voltage SoC I/O rails
Operating Temp	−40°C to +85°C; qualified for industrial control cabinet environments
Endurance	>10¹⁵ write cycles; eliminates wear-leveling firmware overhead
Data Retention	20 years at 85°C; ensures long-term reliability without backup power

Pinout & Package

Package: 8-pad DFN (WSON), 5.0 mm × 6.0 mm, moisture sensitivity level 3 (MSL3), RoHS & REACH compliant.

Pin/Terminal	Circuit Role	Design Meaning
CS#	Chip Select	Active-low enable; must fall before first clock edge to initiate instruction sequence
WP# / IO[2]	Write Protect / Bidirectional Data 2	Hardware lock for status register; tied high if unused in QPI mode
SI / IO[0]	Serial Input / Bidirectional Data 0	Command/address input in SDR; bidirectional in DPI/QPI modes
CLK	Clock Input	Drives all timing; rising edge latches command in SDR/DDR; both edges used in DDR
IO[3]	Bidirectional Data 3	Active in QPI/DPI; tied high if unused to prevent floating
SO / IO[1]	Serial Output / Bidirectional Data 1	Data output always begins on falling clock edge (SDR & DDR)
VCC	Power Supply	1.71–2.00 V core/I/O rail; requires local 100 nF decoupling
VSS	Ground	Common reference for all signals; must be low-impedance connection

Key Features

Feature	Design Value
eXecute-In-Place (XIP)	Reduces sequential read latency by eliminating repeated command transmission
Augmented Storage Array	256-byte user-programmable space with per-32-byte section write protection
JEDEC Reset Support	Enables standardized recovery from unknown states without power cycle
Hardware Write Protect	WP# pin locks status register when asserted, preventing accidental configuration changes
Deep Power Down Mode	Reduces current to ≤1 µA while retaining full memory content and register state

Applications

Factory Automation	Multifunction Printers
Use Scenario: Real-time logging of PLC I/O states and motion controller position feedback during power loss events. IC Role / Device Role / Timing Role: Non-volatile scratchpad memory storing last-known safe state for deterministic restart. Use Value: Eliminates supercapacitor backup circuitry while guaranteeing sub-millisecond write completion and 20-year data retention.	Use Scenario: Storing calibration profiles, ink usage counters, and firmware update staging buffers across print jobs. IC Role / Device Role / Timing Role: Persistent parameter store accessed via QSPI at up to 108 MHz during job initialization. Use Value: Enables zero-latency parameter recall and atomic firmware updates without erase delays or wear leveling.
Industrial Control And Monitoring	Medical Diagnostics
Use Scenario: Cyclic buffering of sensor fusion data (vibration, temperature, pressure) from edge nodes in predictive maintenance systems. IC Role / Device Role / Timing Role: High-endurance ring buffer supporting continuous 100 kHz sampling with timestamped writes. Use Value: Provides >10¹⁵ write cycles-supporting 20+ years of uninterrupted operation without degradation.	Use Scenario: Secure storage of device serial numbers, calibration certificates, and audit logs in portable ultrasound units. IC Role / Device Role / Timing Role: Tamper-resistant identity vault using 64-bit unique ID and programmable serial number registers. Use Value: Meets IEC 62304 traceability requirements with hardware-enforced write protection on critical fields.

Factory Automation

Multifunction Printers

Use Scenario: Real-time logging of PLC I/O states and motion controller position feedback during power loss events.

IC Role / Device Role / Timing Role: Non-volatile scratchpad memory storing last-known safe state for deterministic restart.

Use Value: Eliminates supercapacitor backup circuitry while guaranteeing sub-millisecond write completion and 20-year data retention.

Use Scenario: Storing calibration profiles, ink usage counters, and firmware update staging buffers across print jobs.

IC Role / Device Role / Timing Role: Persistent parameter store accessed via QSPI at up to 108 MHz during job initialization.

Use Value: Enables zero-latency parameter recall and atomic firmware updates without erase delays or wear leveling.

Industrial Control And Monitoring

Medical Diagnostics

Use Scenario: Cyclic buffering of sensor fusion data (vibration, temperature, pressure) from edge nodes in predictive maintenance systems.

IC Role / Device Role / Timing Role: High-endurance ring buffer supporting continuous 100 kHz sampling with timestamped writes.

Use Value: Provides >10¹⁵ write cycles-supporting 20+ years of uninterrupted operation without degradation.

Use Scenario: Secure storage of device serial numbers, calibration certificates, and audit logs in portable ultrasound units.

IC Role / Device Role / Timing Role: Tamper-resistant identity vault using 64-bit unique ID and programmable serial number registers.

Use Value: Meets IEC 62304 traceability requirements with hardware-enforced write protection on critical fields.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial non-volatile memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress Semiconductors FM25V04	4Mb F-RAM; 3.0V only (2.7–3.6V); no QPI mode; max 40MHz SPI	Limited to lower-bandwidth legacy controllers; lacks XIP and augmented storage	Select for cost-sensitive designs where 40MHz speed and 3.0V supply are acceptable
Infineon Technologies CY14B104QN	4Mb nvSRAM; requires external capacitor for auto-store; 10ns access time but volatile standby	Needs backup power management; unsuitable for battery-only or energy-harvesting systems	Select when nanosecond-level random read latency is mandatory and backup power is available

Compared with FM25V04 and CY14B104QN, the M10042040108X0IWAR offers higher interface bandwidth (108MHz QPI), true zero-power non-volatility, and integrated security features-making it optimal for next-generation industrial edge devices requiring robust, low-power, high-reliability memory.

Availability

M10042040108X0IWAR is available at Aetrix Electronics and suitable for factory automation, medical diagnostics, and industrial control applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for M10042040108X0IWAR 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 specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.

The M10042040108X0IWAR belongs to Renesas' Persistent SRAM (P-SRAM) product line, designed to replace battery-backed SRAM and legacy Flash/EEPROM in applications demanding instant-write non-volatility, high endurance, and industrial temperature resilience.

FAQ

What is the operating voltage range for M10042040108X0IWAR?

The M10042040108X0IWAR operates from 1.71 V to 2.00 V. This 1.8V nominal supply range is optimized for compatibility with modern low-power microcontrollers and SoCs. Operation outside this range may result in undefined behavior or failure to meet timing specifications. The device does not support 3.0V operation-other variants like M10042040108X0ISAR use the 2.7–3.6V range.

Does M10042040108X0IWAR support Quad SPI (QPI) mode?

Yes, the M10042040108X0IWAR supports Quad SPI (QPI) with 4-4-4 command-address-data configuration. In QPI mode, all four I/O pins (IO[0]–IO[3]) are used simultaneously for command, address, and data transfer, enabling peak throughput of 432 MB/s at 108MHz. QPI mode must be enabled via Configuration Register 1 and requires proper initialization after power-up.

What is the purpose of the Augmented Storage Array in M10042040108X0IWAR?

The M10042040108X0IWAR includes a dedicated 256-byte Augmented Storage Array, divided into eight 32-byte sections. Each section can be individually programmed and write-protected via configuration bits. This area is used for secure storage of device identifiers, calibration data, or firmware metadata-separate from the main 4Mb memory array and immune to bulk erase commands.

How does the WP# pin function on M10042040108X0IWAR?

The WP# pin on M10042040108X0IWAR provides hardware-based write protection for the status register when WP#EN bit (SR[7]) is set. When WP# is driven low and WP#EN = 1, the status register becomes read-only, preventing accidental modification of block protection settings. In QPI mode, WP# serves as IO[2] and must be pulled high if unused to avoid floating.

Is M10042040108X0IWAR pin-compatible with other densities in the Mxxxx204 family?

Yes, the M10042040108X0IWAR shares identical pinout, package footprint, and electrical interface with M10082040108X0IWAR (8Mb) and M10162040108X0IWAR (16Mb) in the same 8-pad DFN (WA) package. This allows density scalability without PCB layout changes, provided firmware handles the extended address space correctly.

M10042040108X0IWAR Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 8-VDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: RAM

Technology:: MRAM (Magnetoresistive RAM)

Memory Size:: 4Mbit

Memory Organization:: 1M x 4

Memory Interface:: SPI

Clock Frequency:: 108 MHz

Write Cycle Time - Word, Page:: -

Access Time:: -

Voltage - Supply:: 1.71V ~ 2V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

M10042040108X0IWAR FAQ

1.How can I place an order for M10042040108X0IWAR through Aetrix?

Please submit a Request for Quotation (RFQ) for M10042040108X0IWAR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for M10042040108X0IWAR reliable?

The price and inventory of M10042040108X0IWAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M10042040108X0IWAR is usually 5 days.

3.What payment methods are accepted for M10042040108X0IWAR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M10042040108X0IWAR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M10042040108X0IWAR?

M10042040108X0IWAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M10042040108X0IWAR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for M10042040108X0IWAR?

For technical support, including M10042040108X0IWAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M10042040108X0IWAR requirements.

6.How does Aetrix verify that M10042040108X0IWAR is sourced from the original manufacturer or authorized distributors?

All M10042040108X0IWAR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M10042040108X0IWAR meets industry standards.

7.What is the process for return or replacement of M10042040108X0IWAR?

All M10042040108X0IWAR units undergo pre-shipment inspection (PSI). If there is an issue with M10042040108X0IWAR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The M10042040108X0IWAR part is unused and in its original packaging.

Return procedure for M10042040108X0IWAR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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