Renesas M30042040054X0PWAR

Overview

M30042040054X0PWAR from Renesas is a 4Mb serial STT-MRAM non-volatile memory IC with QSPI interface, 54MHz DDR timing, 1.71–2.0V or 2.7–3.6V supply, industrial-plus temperature range (−40°C to +105°C), and 8-pad DFN (WSON) package - deployed in factory automation controllers for real-time parameter retention during power loss.

For engineers reviewing the M30042040054X0PWAR datasheet, M30042040054X0PWAR pinout, M30042040054X0PWAR application, or M30042040054X0PWAR equivalent, key selection considerations include its persistent SRAM-compatible latency, hardware/software write protection, 256-byte augmented storage array, JEDEC reset support, and dual-voltage operation across extended temperature.

Technical Context

This MRAM uses 40nm pMTJ spin-transfer torque technology to deliver true random access with SRAM-like read/write timing and Flash-level non-volatility. It supports Quad SPI (4-4-4) in both SDR and DDR modes, with DDR clock edges used for address/data latching on both rising and falling edges.

The device integrates hardware write protection via WP# pin and software-based protection through configurable status and block protect bits. Its architecture includes an independent 256-byte augmented storage array, eXecute-In-Place (XIP) capability, and two low-power states (Deep Power Down and Hibernate) with full data and configuration retention.

Key Specifications

Pinout & Package

8-pad DFN (WSON) package, 5.0 mm × 6.0 mm, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V04-G and CY14V104N-ZSP25XI, M30042040054X0PWAR provides higher bandwidth (54MHz DDR), broader voltage flexibility (1.8V/3.3V), integrated augmented storage, and JEDEC-standard reset - making it optimal for next-generation industrial edge nodes requiring deterministic performance and long-term reliability without backup components.

Availability

M30042040054X0PWAR is available at Aetrix Electronics and suitable for factory automation, medical diagnostics, and industrial control applications requiring stable component supply, extended temperature operation, and guaranteed MRAM longevity.

Supply support for M30042040054X0PWAR 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.

M30042040054X0PWAR belongs to Renesas' Persistent SRAM (P-SRAM) family - engineered to replace battery-backed SRAM and legacy nvSRAM in systems demanding instant-write non-volatility, high endurance, and seamless SPI integration.

FAQ

What is the operating voltage range supported by M30042040054X0PWAR?

M30042040054X0PWAR supports two independent voltage ranges: 1.71V to 2.00V for 1.8V systems and 2.70V to 3.60V for 3.3V systems. Both ranges are fully specified across the full −40°C to +105°C temperature range. The device automatically adapts internal regulation and timing to the applied VCC level - no external configuration is required to switch between voltage domains. This dual-rail capability simplifies design reuse across multiple platform generations.

Does M30042040054X0PWAR support Quad SPI (QPI) mode?

Yes, M30042040054X0PWAR supports full Quad SPI (4-4-4) operation in both Single Data Rate (SDR) and Double Data Rate (DDR) modes. In QPI DDR mode, it achieves 54MHz clock frequency with data latched on both clock edges, delivering up to 432 Mbps effective throughput. The QPI entry command (38h) and exit sequence are defined in the instruction set and require no external hardware changes - only firmware initialization.

How is write protection implemented on M30042040054X0PWAR?

M30042040054X0PWAR 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 mechanisms independently control protection of the main memory array, augmented storage sections, and serial number registers - allowing granular lockdown of critical fields while permitting runtime updates to non-protected regions.

What is the purpose of the Augmented Storage Array in M30042040054X0PWAR?

The Augmented Storage Array is a dedicated 256-byte memory region divided into eight 32-byte programmable sections, each individually lockable. It is designed to store infrequently modified but mission-critical data such as device unique IDs, calibration constants, security keys, or regulatory audit logs. Unlike the main array, this region supports per-section write protection and retains factory-programmed values across power cycles - enhancing system security and traceability.

Is M30042040054X0PWAR compatible with standard SPI memory controllers?

Yes, M30042040054X0PWAR is fully compatible with industry-standard SPI controllers supporting Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). It responds to standard SPI commands (Read, Write Enable, Write Status, etc.) and supports JEDEC-standard Reset (66h). No custom driver or controller modification is needed - only firmware updates to leverage QPI, DDR, or XIP features. Pinout and timing align with common SPI NOR flash footprints.