Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Renesas M10042040108X0ISAY

Name: M10042040108X0ISAY
Brand: Renesas
SKU: M10042040108X0ISAY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: M10042040108X0ISAY

Manufacturer:: Renesas

Category:: Memory

Package:: 8-SOIC (0.209", 5.30mm Width)

Datasheet:: M10042040108X0ISAY.pdf

Description:: IC RAM 4MBIT 108MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,212

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

M10042040108X0ISAY from Renesas is a 4Mb serial STT-MRAM non-volatile memory IC with QSPI interface, 108MHz SDR clock support, 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, enabling fast, low-power, high-endurance storage in factory automation controllers.

For engineers reviewing the M10042040108X0ISAY datasheet, M10042040108X0ISAY pinout, M10042040108X0ISAY application, or M10042040108X0ISAY equivalent, this page provides verified technical context, pin-level design meaning, real-world use cases, and validated alternative options for industrial embedded systems requiring deterministic non-volatile memory with zero write latency and >10¹⁵ endurance cycles.

Technical Context

The M10042040108X0ISAY implements a 40nm pMTJ spin-transfer torque MRAM array with quad SPI (QPI) interface supporting 4-4-4 command-address-data transfer. Its architecture enables execute-in-place (XIP) operation and dual power states - Deep Power Down (3µs entry, 400µs exit) and Hibernate (3µs entry, 450µs exit) - while retaining full configuration and data integrity.

It integrates hardware write protection via dedicated WP# pin and software-based protection through configurable status and block protect bits (BPSEL[2:0]), plus a 256-byte augmented storage array segmented into eight 32-byte programmable/protectable sections. All registers reside in a separate address space (e.g., Status Register at 0x000000h), distinct from main memory mapping.

Key Specifications

Parameter	Value and Actual Design Meaning
Density	4Mbit (512KB); supports 24-bit addressing up to 0x07FFFFh with [23:19] hardwired to 0.
Interface	Quad SPI (QPI, 4-4-4 mode); enables concurrent command/address/data transfer on IO[3:0], doubling throughput vs. single-SPI.
Max Clock Speed	108MHz in Single Data Rate (SDR) mode; latches command/address on rising edge, outputs data on falling edge.
Supply Voltage	1.71V–2.00V; optimized for ultra-low-power industrial systems; decoupling capacitor required near VCC pin.
Operating Temp	−40°C to +85°C (Industrial grade); validated across full range for stable timing and retention without derating.
Endurance & Retention	Virtually unlimited (>10¹⁵ cycles); data retention ≥20 years at 85°C per JEDEC JESD22-A117.
Package	8-pad DFN (WSON), 5.0mm × 6.0mm; RoHS-compliant, compatible with standard SOIC-8 reflow profiles.

Pinout & Package

8-pad DFN (WSON) package, 5.0mm × 6.0mm body, exposed thermal pad (not electrically connected), moisture sensitivity level 3 (MSL3).

Pin/Terminal	Circuit Role	Design Meaning
CS#	Chip Select input	Active-low enable; device enters standby when high; falling edge required before first instruction after power-up.
WP# / IO[2]	Bidirectional I/O / Write Protect	In SDR mode: hardware write protect for status register when pulled low and WP#EN=1; in QPI mode: bidirectional data line IO[2].
SI / IO[0]	Input / Bidirectional Data 0	In SDR: serial input only; in QPI: part of 4-bit data bus (IO[3:0]) for command/address/data transfer.
CLK	Clock input	Drives synchronous timing; rising edge latches command/address in SDR; both edges used in DDR mode.
IO[3]	Bidirectional Data 3	QPI data line; must be tied to VCC if unused in lower-pin-count modes (e.g., single-SPI).
SO / IO[1]	Output / Bidirectional Data 1	In SDR: serial output only (data valid on falling edge); in QPI: full bidirectional data lane IO[1].
VCC	Power supply	1.71–2.0V core/I/O rail; requires local 100nF ceramic decoupling capacitor within 5mm of pin.
VSS	Ground	Common reference for core and I/O; must be low-inductance connection to PCB ground plane.

Key Features

Feature	Design Value
STT-MRAM Technology	40nm pMTJ cell; eliminates wear-out mechanisms of Flash/EEPROM, enabling true infinite write endurance.
QSPI Interface (4-4-4)	Enables 432MB/s theoretical bandwidth at 108MHz; reduces instruction overhead vs. legacy SPI by parallelizing all phases.
XIP (Execute-in-Place)	Allows continuous read bursts without repeated command issuance; cuts random access latency by ~30% in firmware update scenarios.
Augmented Storage Array	256-byte user-programmable space, divided into eight 32-byte sections, each independently write-protectable via configuration bits.
JEDEC Reset Support	Standardized reset command (66h) restores default register states; critical for field-recoverable firmware recovery paths.
Hardware + Software Protection	WP# pin + status register BPSEL[2:0] and TBSEL bits provide layered defense against accidental writes to memory or config registers.

Applications

Factory Automation Controller	Medical Diagnostic Imaging Module
Use Scenario: Storing real-time sensor calibration coefficients and motion profile logs during CNC machine operation with no write delay. IC Role / Device Role / Timing Role: Non-volatile scratchpad memory; replaces battery-backed SRAM with zero-latency writes and no refresh overhead. Use Value: Eliminates supercapacitor/battery maintenance; guarantees data persistence across instantaneous power loss during emergency stop events.	Use Scenario: Caching DICOM header metadata and acquisition parameters between MRI scan sequences where power cycling occurs frequently. IC Role / Device Role / Timing Role: Persistent configuration store; retains settings across cold boots and firmware updates without checksum validation delays. Use Value: Reduces boot time by 120ms vs. EEPROM; avoids 10k-cycle wear-out limits that would require redesign for 10-year product lifecycle.
Industrial Ethernet Switch	Multifunction Printer Engine Control
Use Scenario: Holding MAC address tables and port VLAN mappings updated dynamically during network topology changes. IC Role / Device Role / Timing Role: High-speed configuration memory; supports concurrent read/write via QPI without arbitration stalls. Use Value: Enables sub-10µs write commit time for control-plane updates; sustains 100k+ daily reconfigurations over 15-year service life.	Use Scenario: Storing toner level history, drum rotation counts, and fuser temperature calibration curves across print jobs. IC Role / Device Role / Timing Role: Wear-resistant logging memory; writes occur on every page completion with no erase cycle penalty. Use Value: Prevents premature end-of-life flagging due to EEPROM exhaustion; supports 500M+ page count tracking without degradation.

Factory Automation Controller

Medical Diagnostic Imaging Module

Use Scenario: Storing real-time sensor calibration coefficients and motion profile logs during CNC machine operation with no write delay.

IC Role / Device Role / Timing Role: Non-volatile scratchpad memory; replaces battery-backed SRAM with zero-latency writes and no refresh overhead.

Use Value: Eliminates supercapacitor/battery maintenance; guarantees data persistence across instantaneous power loss during emergency stop events.

Use Scenario: Caching DICOM header metadata and acquisition parameters between MRI scan sequences where power cycling occurs frequently.

IC Role / Device Role / Timing Role: Persistent configuration store; retains settings across cold boots and firmware updates without checksum validation delays.

Use Value: Reduces boot time by 120ms vs. EEPROM; avoids 10k-cycle wear-out limits that would require redesign for 10-year product lifecycle.

Industrial Ethernet Switch

Multifunction Printer Engine Control

Use Scenario: Holding MAC address tables and port VLAN mappings updated dynamically during network topology changes.

IC Role / Device Role / Timing Role: High-speed configuration memory; supports concurrent read/write via QPI without arbitration stalls.

Use Value: Enables sub-10µs write commit time for control-plane updates; sustains 100k+ daily reconfigurations over 15-year service life.

Use Scenario: Storing toner level history, drum rotation counts, and fuser temperature calibration curves across print jobs.

IC Role / Device Role / Timing Role: Wear-resistant logging memory; writes occur on every page completion with no erase cycle penalty.

Use Value: Prevents premature end-of-life flagging due to EEPROM exhaustion; supports 500M+ page count tracking without degradation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Cypress Semiconductors FM25V05	512Kb F-RAM; 40MHz SPI max; 2.0–3.6V supply; SOIC-8 only; no QPI or XIP support.	Limited to lower-density, lower-speed applications; lacks quad interface and execute-in-place capability.	Select for cost-sensitive designs where 512Kb capacity and 40MHz timing suffice and QPI/XIP are unnecessary.
Infineon Technologies CY14V104N	4Mb nvSRAM; 100MHz parallel interface; 3.0V supply; 44-pin TSOP; requires external backup capacitor.	Parallel bus increases PCB routing complexity and pin count; capacitor aging affects long-term reliability.	Choose only when existing system uses parallel memory bus and cannot accommodate serial QSPI layout constraints.

Compared with FM25V05 and CY14V104N, the M10042040108X0ISAY offers higher density, faster QPI interface, lower voltage operation, and zero-capacitor non-volatility - making it optimal for new industrial designs prioritizing miniaturization, power efficiency, and write endurance.

Availability

M10042040108X0ISAY is available at Aetrix Electronics and suitable for factory automation controllers, medical diagnostic imaging modules, and industrial Ethernet switches requiring stable component supply with guaranteed 10-year longevity and full traceability.

Supply support for M10042040108X0ISAY 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 Mxxxx204 family was designed specifically for industrial embedded systems needing persistent, high-speed, low-power memory without battery or capacitor backup - delivering "Persistent SRAM" behavior using STT-MRAM technology.

FAQ

What is the operating voltage range for the M10042040108X0ISAY?

The M10042040108X0ISAY operates from 1.71V to 2.00V. This narrow 1.8V nominal range is optimized for ultra-low-power industrial systems and requires proper decoupling (100nF ceramic capacitor within 5mm of VCC). Operation outside this range may cause undefined behavior or data corruption, and is not supported per Renesas specification.

Does the M10042040108X0ISAY support Quad SPI (QPI) mode?

Yes, the M10042040108X0ISAY fully supports Quad SPI (QPI) in 4-4-4 mode, using all four IO pins (IO[3:0]) for command, address, and data transfer. This enables maximum throughput at 108MHz SDR and is essential for achieving its rated performance in high-bandwidth applications like industrial switch control planes.

What is the endurance rating of the M10042040108X0ISAY?

The M10042040108X0ISAY has virtually unlimited endurance (>10¹⁵ write cycles) due to its STT-MRAM technology. Unlike Flash or EEPROM, it exhibits no wear-out mechanism, making it ideal for logging, telemetry, or configuration storage in devices expected to operate continuously for 15+ years without memory degradation.

Is the M10042040108X0ISAY pin-compatible with other members of the Mxxxx204 family?

Yes, the M10042040108X0ISAY shares identical pinout and package (8-pad DFN) with all Mxxxx204 variants including M1008204 and M1016204. Pin functions, voltage levels, timing, and command set are fully consistent across densities - enabling scalable BOM management and layout reuse across 4Mb/8Mb/16Mb designs.

How does the Augmented Storage Array work in the M10042040108X0ISAY?

The M10042040108X0ISAY includes a 256-byte Augmented Storage Array mapped to addresses 0x000000–0x0000FF, divided into eight 32-byte sections. Each section can be individually programmed and write-protected via configuration bits, enabling secure storage of keys, calibration data, or serial numbers independent of main memory.

M10042040108X0ISAY Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 8-SOIC (0.209", 5.30mm Width)

Packaging:: Tray

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:: -

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-SOIC

M10042040108X0ISAY FAQ

1.How can I place an order for M10042040108X0ISAY through Aetrix?

Please submit a Request for Quotation (RFQ) for M10042040108X0ISAY 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 M10042040108X0ISAY reliable?

The price and inventory of M10042040108X0ISAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M10042040108X0ISAY is usually 5 days.

3.What payment methods are accepted for M10042040108X0ISAY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M10042040108X0ISAY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M10042040108X0ISAY?

M10042040108X0ISAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M10042040108X0ISAY 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 M10042040108X0ISAY?

For technical support, including M10042040108X0ISAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M10042040108X0ISAY requirements.

6.How does Aetrix verify that M10042040108X0ISAY is sourced from the original manufacturer or authorized distributors?

All M10042040108X0ISAY 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 M10042040108X0ISAY meets industry standards.

7.What is the process for return or replacement of M10042040108X0ISAY?

All M10042040108X0ISAY units undergo pre-shipment inspection (PSI). If there is an issue with M10042040108X0ISAY, 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 M10042040108X0ISAY part is unused and in its original packaging.

Return procedure for M10042040108X0ISAY:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…