Renesas M30042040108X0IWAY

Overview

M30042040108X0IWAY 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, enabling fast, low-power, high-endurance storage in real-time industrial control systems.

For engineers reviewing the M30042040108X0IWAY datasheet, M30042040108X0IWAY pinout, M30042040108X0IWAY application, or M30042040108X0IWAY equivalent, key selection considerations include its 4Mb density, 108MHz SDR QSPI timing, hardware/software write protection, 256-byte augmented storage array, and compatibility with SPI Mode 0/3 in industrial-grade DFN packaging.

Technical Context

The M30042040108X0IWAY implements a 40nm pMTJ spin-transfer torque MRAM array with true random access, supporting Quad SPI (4-4-4) and Single Data Rate mode at 108MHz. Its architecture includes dedicated command/address/data paths, eXecute-In-Place (XIP) capability, and dual power states (Deep Power Down and Hibernate) that preserve data and configuration without refresh.

It integrates hardware-based write protection via the WP# pin and software-based protection through configurable status and block protection bits, alongside a 256-byte user-programmable augmented storage array segmented into eight 32-byte protected sections - all accessible via standard SPI instructions without external logic.

Key Specifications

Pinout & Package

8-pad DFN (WSON) package, 5.0mm × 6.0mm body, wettable flank leads, RoHS-compliant. Pin 1 marked by top-side dot; thermal pad exposed on underside for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V04-G and CY14B104Q2BN, the M30042040108X0IWAY offers higher interface speed (108MHz vs ≤40/100MHz), smaller 8-pad DFN footprint, zero external components for non-volatility, and integrated augmented storage - making it optimal for new 1.8V industrial designs demanding compact, robust, high-throughput memory.

Availability

M30042040108X0IWAY is available at Aetrix Electronics and suitable for factory automation, multifunction printers, and industrial control systems requiring stable component supply, long-term lifecycle assurance, and RoHS/REACH-compliant sourcing.

Supply support for M30042040108X0IWAY 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 M30042040108X0IWAY belongs to Renesas' Persistent SRAM (P-SRAM) product line, designed to replace battery-backed SRAM and legacy EEPROM/Flash in mission-critical industrial applications demanding zero-latency non-volatility and 20+ year data retention.

FAQ

What is the operating voltage range for the M30042040108X0IWAY?

The M30042040108X0IWAY operates from 1.71V to 2.00V. This 1.8V nominal supply range ensures compatibility with modern low-power microcontrollers and SoCs while maintaining full functionality across the industrial temperature range (−40°C to +85°C). Operation outside this range may result in undefined behavior or data corruption.

Does the M30042040108X0IWAY support Quad SPI (QPI) mode?

Yes, the M30042040108X0IWAY supports Quad SPI (4-4-4) mode as specified in its feature set. It also supports Dual SPI and standard SPI modes. QPI mode enables higher throughput by using all four I/O lines (IO[0]–IO[3]) for command, address, and data transfers, and is fully compatible with SPI Mode 0 and Mode 3 clocking configurations.

What is the purpose of the Augmented Storage Array in the M30042040108X0IWAY?

The Augmented Storage Array in the M30042040108X0IWAY is a dedicated 256-byte memory space, divided into eight 32-byte sections, each independently programmable and write-protectable. It is used for storing critical, infrequently updated data such as calibration coefficients, device serial numbers, or security keys - separate from the main 4Mb array to prevent accidental overwrite during firmware operations.

How does the M30042040108X0IWAY handle power-loss events?

The M30042040108X0IWAY retains all stored data without external capacitors or batteries due to its intrinsic MRAM non-volatility. During power loss, data remains intact as long as VCC remains above VCC_RST (≤0.2V). No refresh, backup power circuitry, or wear leveling is required - ensuring deterministic, zero-latency persistence even during abrupt brownouts or emergency shutdowns.

Is the M30042040108X0IWAY pin-compatible with other members of the Mxxxx204 family?

Yes, the M30042040108X0IWAY shares identical pinout, package dimensions, and electrical interface with all Mxxxx204 variants (e.g., M3008204, M3016204, M1004204) in the same package type (WA = 8-pad DFN). Density and speed differences do not affect physical or functional pin compatibility, enabling drop-in upgrades within the same footprint and voltage domain.