Renesas M10162040054X0PSAR

Overview

M10162040054X0PSAR from Renesas is a 16Mbit serial STT-MRAM non-volatile memory IC with QSPI interface, 54MHz DDR timing, industrial-plus temperature range (−40°C to +105°C), and 8-pin SOIC package. It delivers SRAM-compatible read/write latency, zero write endurance limit, and data retention exceeding 20 years - deployed in factory automation controllers for real-time parameter logging without battery backup.

For engineers reviewing the M10162040054X0PSAR datasheet, M10162040054X0PSAR pinout, M10162040054X0PSAR application, or M10162040054X0PSAR equivalent, key selection criteria include its 1.71–2.0V/2.7–3.6V dual-voltage support, hardware/software write protection, 256-byte augmented storage array, and JEDEC Reset compliance - critical for deterministic boot and field-upgrade resilience in embedded systems.

Technical Context

The M10162040054X0PSAR implements a 40nm pMTJ spin-transfer torque MRAM array with quad SPI (QPI) interface supporting 1-4-4 command-address-data nomenclature. Its architecture enables execute-in-place (XIP) operation, eliminating instruction reload overhead during sequential reads.

It integrates dual power domains (1.8V and 3.0V compatible), deep power-down (3µs entry, 400µs exit) and hibernate modes with full configuration retention, plus dedicated registers for status, block protection, device ID (64-bit), and user-programmable serial number - all accessible via standardized SPI opcodes.

Key Specifications

Pinout & Package

8-pin SOIC package (5.2mm × 5.2mm, RoHS-compliant), pin-compatible with industry-standard SPI memories. Pin assignments are validated per Renesas datasheet Figure 4 and Table 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V10-G and CY14V108L-ZS25XI, the M10162040054X0PSAR provides 2× higher density than the F-RAM, 2× bandwidth vs. the nvSRAM, and eliminates external components - making it optimal for new designs prioritizing scalability, thermal robustness, and SPI ecosystem compatibility.

Availability

M10162040054X0PSAR is available at Aetrix Electronics and suitable for factory automation controllers, medical diagnostic imaging systems, and industrial Ethernet switches requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M10162040054X0PSAR 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 M10162040054X0PSAR belongs to Renesas' Persistent SRAM (P-SRAM) family - engineered to replace battery-backed SRAM and legacy serial Flash in applications demanding instant-write non-volatility, high endurance, and industrial temperature resilience.

FAQ

What voltage ranges does the M10162040054X0PSAR support?

The M10162040054X0PSAR supports two independent operating 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 - no external configuration is needed to switch between voltage domains. This dual-rail capability makes the M10162040054X0PSAR suitable for mixed-voltage designs without level-shifting circuitry.

Does the M10162040054X0PSAR require a battery or capacitor for data retention?

No, the M10162040054X0PSAR does not require any external energy storage for data retention. As a spin-transfer torque MRAM device, it retains data indefinitely without power - verified for >20 years at 105°C. Unlike nvSRAM or battery-backed SRAM, the M10162040054X0PSAR writes data instantly and non-volatily on every store command, eliminating STORE/RECALL sequences, capacitors, batteries, or associated failure modes. This simplifies design, reduces BOM cost, and improves long-term reliability.

How is write protection implemented on the M10162040054X0PSAR?

The M10162040054X0PSAR implements dual-layer write protection: hardware-based via the WP# pin (active-low, disables status register writes when asserted), and software-based via configuration bits in the Status Register (BPSEL[2:0], TBSEL, SNPEN). These bits allow selective locking of top/bottom memory blocks, the serial number field, and the augmented storage array. Protection remains active across power cycles and low-power states - ensuring critical firmware or calibration data cannot be overwritten accidentally or maliciously.

What is the purpose of the Augmented Storage Array in the M10162040054X0PSAR?

The M10162040054X0PSAR includes a dedicated 256-byte Augmented Storage Array, organized into eight 32-byte programmable sections. Each section can be individually write-protected - enabling secure storage of calibration constants, cryptographic keys, or device-specific identifiers separate from the main 16Mbit memory. This isolation prevents corruption during firmware updates and supports secure boot workflows, while retaining the same endurance and retention guarantees as the primary array.

Can the M10162040054X0PSAR operate in Execute-in-Place (XIP) mode?

Yes, the M10162040054X0PSAR supports Execute-in-Place (XIP) mode, allowing continuous sequential reads without reissuing the READ command for each address. XIP is enabled by sending a special byte (0xAx) after the address in supported instructions. This reduces instruction overhead and improves effective read bandwidth - particularly beneficial for boot code execution or streaming configuration data in resource-constrained microcontrollers interfacing via QSPI.