Renesas M30042040054X0ISAY

Overview

M30042040054X0ISAY from Renesas is a 4Mb serial STT-MRAM non-volatile memory IC with QSPI interface, 1.71–2.0V or 2.7–3.6V supply, industrial temperature range (−40°C to +85°C), and 8-pin SOIC package. It delivers SRAM-compatible read/write timing, zero write latency, and unlimited endurance for real-time data logging in factory automation controllers.

For engineers reviewing the M30042040054X0ISAY datasheet, M30042040054X0ISAY pinout, M30042040054X0ISAY application, or M30042040054X0ISAY equivalent, key selection criteria include DDR/SDR QSPI mode support, hardware/software write protection, 256-byte augmented storage array, JEDEC reset compliance, and industrial-grade thermal reliability.

Technical Context

The M30042040054X0ISAY implements spin-transfer torque MRAM technology on a 40nm pMTJ process, enabling true random-access non-volatility with no wear-out mechanism. Its architecture supports Execute-In-Place (XIP) mode to eliminate per-access command overhead during burst reads.

It operates in Quad SPI (4-4-4) mode at up to 54MHz DDR (108MHz SDR equivalent bandwidth), with dedicated WP# pin for hardware write protection and configurable block protection via status register bits. The device integrates dual low-power states-Deep Power Down (IDPD) and Hibernate-with full configuration retention.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (5.2mm × 5.2mm), RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V05 and EMD4004, the M30042040054X0ISAY provides higher density, dual-voltage operation, QPI/DDR flexibility, and zero-capacitor non-volatility - reducing system complexity and improving long-term field reliability.

Availability

M30042040054X0ISAY is available at Aetrix Electronics and suitable for factory automation, industrial control and monitoring, and medical diagnostics requiring stable component supply, long-lifecycle assurance, and RoHS/REACH compliance.

Supply support for M30042040054X0ISAY 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 M30042040054X0ISAY belongs to Renesas' Persistent SRAM (P-SRAM) family, engineered to replace battery-backed SRAM and legacy nvSRAM in mission-critical industrial systems where data integrity and zero-maintenance operation are essential.

FAQ

What is the operating voltage range supported by the M30042040054X0ISAY?

The M30042040054X0ISAY supports two independent VCC ranges: 1.71V to 2.00V and 2.70V to 3.60V. This dual-voltage capability allows direct integration into both 1.8V and 3.3V system rails without level-shifting. The device automatically adapts its internal regulation and timing parameters based on the applied VCC, and both ranges are fully qualified across the −40°C to +85°C industrial temperature range. M30042040054X0ISAY does not support intermediate voltages outside these bands.

Does the M30042040054X0ISAY support Execute-In-Place (XIP) functionality?

Yes, the M30042040054X0ISAY supports XIP mode, which allows continuous sequential reads without reissuing the READ command for each address. Activation requires sending a special XIP byte (0xAxh) after the address in supported instruction sequences. This reduces instruction overhead and improves effective read throughput - especially beneficial for executing boot code directly from MRAM. XIP is fully functional in both SDR and DDR QSPI modes. M30042040054X0ISAY documentation confirms XIP behavior in Section 6 and Table 4.

How is write protection implemented on the M30042040054X0ISAY?

M30042040054X0ISAY implements dual-layer write protection: hardware-based via the WP# pin (active-low, disables status register writes when enabled), and software-based via configuration bits in the Status Register (BPSEL[2:0], TBSEL, SNPEN). These can be combined - e.g., WP# protects the status register while software bits protect specific memory blocks. The Augmented Storage Array also supports per-section write lock. All protection mechanisms are retained across power cycles. M30042040054X0ISAY's datasheet details this in Sections 3, 11.1, and 9.

What package type and dimensions does the M30042040054X0ISAY use?

The M30042040054X0ISAY uses an 8-pin SOIC package measuring 5.2mm × 5.2mm with standard 1.27mm pitch. This footprint matches industry-standard 8-pin SOIC non-volatile memories, enabling drop-in replacement in existing designs. Pinout is identical to other members of the Mxxxx204 family (e.g., M1004204, M3008204) and follows JEDEC MS-012. The 'Y' suffix in M30042040054X0ISAY explicitly denotes tray packaging. M30042040054X0ISAY is not offered in DFN/WSON for this temperature/packaging variant.

Is the M30042040054X0ISAY compatible with standard SPI controllers?

Yes, the M30042040054X0ISAY is fully compatible with standard SPI controllers supporting SPI Mode 0 (CPOL=0, CPHA=0) and SPI Mode 3 (CPOL=1, CPHA=1). It supports all common SPI variants - Single (1-1-1), Dual (1-2-2), and Quad (1-4-4, 4-4-4) - and both SDR and DDR timing. Command structures follow JEDEC JESD216B, and the device responds to standard SPI opcodes (e.g., 03h Read, 02h Page Program). M30042040054X0ISAY requires no proprietary drivers or firmware extensions.