Renesas M10162040054X0PWAR

Overview

M10162040054X0PWAR from Renesas is a 16Mbit serial STT-MRAM non-volatile memory IC with Quad SPI (4-4-4) interface, 54MHz DDR clock support, 1.71–2.0V or 2.7–3.6V dual supply range, and industrial-plus temperature rating (−40°C to +105°C). It delivers SRAM-compatible read/write timing with persistent data retention, targeting real-time data logging in factory automation controllers.

For engineers reviewing the M10162040054X0PWAR datasheet, M10162040054X0PWAR pinout, M10162040054X0PWAR application, or M10162040054X0PWAR equivalent, key selection criteria include its 16Mbit density, QSPI DDR mode compatibility, hardware/software write protection, 256-byte augmented storage array, and WSON-8 package footprint for space-constrained industrial PCBs.

Technical Context

The M10162040054X0PWAR implements a 40nm pMTJ spin-transfer torque MRAM core with true random-access capability-enabling byte-level reads/writes without erase cycles. Its architecture supports Execute-In-Place (XIP), reducing command overhead for sequential instruction execution.

It operates in four SPI modes (1-1-1, 1-4-4, 4-4-4, etc.) with configurable clock polarity/phase (SPI Mode 0 or 3), and integrates dual low-power states: Deep Power Down (IDPD ≤ 10 µA) and Hibernate (IHBN ≤ 20 µA), both preserving memory contents and register configuration.

Key Specifications

Pinout & Package

8-pad DFN (WSON) package, 5.0 mm × 6.0 mm, 0.5 mm pitch, exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V20A-G and W25Q16JW-QAAIE, the M10162040054X0PWAR uniquely combines 16 Mbit density, DDR-enabled throughput, industrial-plus temperature rating, and infinite endurance - making it the sole option for mission-critical, high-write industrial firmware and data buffers requiring zero maintenance over 15+ years.

Availability

M10162040054X0PWAR is available at Aetrix Electronics and suitable for factory automation controllers, medical diagnostics instruments, and industrial routers requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for M10162040054X0PWAR 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 is designed as Persistent SRAM (P-SRAM) replacements - delivering SRAM-like performance with non-volatile reliability for real-time industrial and medical systems where data integrity and uptime are non-negotiable.

FAQ

What is the maximum operating frequency of the M10162040054X0PWAR in Double Data Rate mode?

The M10162040054X0PWAR supports up to 54 MHz in Double Data Rate (DDR) mode, achieving 432 Mbps peak data throughput using both clock edges. This is confirmed in the "Features" section of the datasheet under "Interface" specifications and validated in Table 4 for DDR instruction timing. The M10162040054X0PWAR does not support 108 MHz DDR - that speed is reserved for the 0108 suffix variants.

Does the M10162040054X0PWAR require an external voltage regulator for its 1.8V supply rail?

No, the M10162040054X0PWAR operates directly from a 1.71–2.00 V supply and does not require an external regulator if the host system provides a stable, well-decoupled 1.8V rail. The datasheet specifies 100 nF ceramic decoupling capacitance near the VCC pin, and no internal LDO or regulator circuitry is present - confirming direct connection to a clean 1.8V source is sufficient for proper M10162040054X0PWAR operation.

How is write protection implemented on the M10162040054X0PWAR, and can it be disabled?

The M10162040054X0PWAR implements dual-layer write protection: hardware-based via the WP# pin (enabled by SR[7] bit), and software-based via Status Register BPSEL[2:0] and TBSEL bits. Protection can be fully disabled by clearing SR[7] (WP#EN = 0) and setting BPSEL[2:0] = 000, allowing unrestricted writes to memory and registers. All protection settings are volatile unless locked via the Augmented Storage Array protection register.

What is the purpose of the 256-byte Augmented Storage Array in the M10162040054X0PWAR?

The 256-byte Augmented Storage Array in the M10162040054X0PWAR is a dedicated, user-programmable region divided into eight 32-byte sections, each independently readable, writable, and write-protectable. It is intended for storing calibration data, device-specific identifiers, or security keys - separate from the main memory array - and retains full functionality even when main array protection is enabled. This feature is explicitly defined in Section 9 and Table 9 of the M10162040054X0PWAR datasheet.

Is the M10162040054X0PWAR pin-compatible with other devices in the Mxxxx204 family?

Yes, the M10162040054X0PWAR shares identical pinout, package dimensions, and signal assignments with all Mxxxx204 variants in the same package type (e.g., WA = WSON-8), including M10042040054X0PWAR and M10082040054X0PWAR. Pin compatibility is confirmed in Figures 3 and 4 (Page 9) and Table 2 (Page 7) of the datasheet, which define uniform CS#, CLK, IO[0–3], VCC, and VSS mapping across the entire M-series family.