Renesas M10162040054X0ISAR

Overview

M10162040054X0ISAR from Renesas is a 16Mbit serial STT-MRAM memory IC with QSPI interface, 54MHz DDR timing, industrial temperature range (−40°C to +85°C), and 8-pin SOIC package. It delivers SRAM-compatible read/write performance with true non-volatility, enabling persistent data storage in real-time control systems requiring zero write latency and infinite endurance.

For engineers reviewing the M10162040054X0ISAR datasheet, M10162040054X0ISAR pinout, M10162040054X0ISAR application, or M10162040054X0ISAR equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters, and real-world use cases for industrial embedded systems where power-loss resilience and deterministic timing are critical.

Technical Context

This MRAM device implements spin-transfer torque (STT) technology on a 40nm pMTJ process, delivering persistent SRAM-equivalent behavior with no wear-out mechanism. Its QSPI interface supports 1-4-4 command-address-data configuration and Double Data Rate mode at 54MHz, enabling high-throughput sequential and random access without erase cycles.

The architecture includes dual power domains (1.71–2.0V or 2.7–3.6V), hardware write protection via WP# pin, software-configurable block protection, and a dedicated 256-byte augmented storage array with per-section write lock. It supports JEDEC Reset, Deep Power Down (3µs entry, 400µs exit), and Hibernate modes while retaining full configuration state.

Key Specifications

Pinout & Package

8-pin SOIC (5.2mm × 5.2mm) package with standard JEDEC MS-012AC footprint; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with FM25V10-G, M10162040054X0ISAR offers 16× higher density and DDR QSPI bandwidth; compared with W25Q16JW-QI, it eliminates erase cycles and guarantees single-cycle writes - making it superior for real-time data capture and safety-critical state retention.

Availability

M10162040054X0ISAR is available at Aetrix Electronics and suitable for factory automation PLCs, medical diagnostic imaging systems, and industrial Ethernet switches requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for M10162040054X0ISAR 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.

M10162040054X0ISAR belongs to Renesas' Persistent SRAM (P-SRAM) family - engineered to replace battery-backed SRAM and legacy EEPROM/NOR in applications demanding instant-write non-volatility, infinite endurance, and industrial-grade reliability.

FAQ

What is the maximum clock frequency supported by M10162040054X0ISAR in Double Data Rate mode?

M10162040054X0ISAR supports 54MHz in Double Data Rate (DDR) mode, achieving effective 108MHz data transfer rates by sampling on both clock edges. This matches the timing performance of 108MHz Single Data Rate devices while reducing EMI and easing PCB layout constraints. The 54MHz DDR specification is validated across the full −40°C to +85°C industrial temperature range and 2.7–3.6V supply.

Does M10162040054X0ISAR require an external backup battery or capacitor for data retention?

No, M10162040054X0ISAR does not require any external backup components. As a magneto-resistive RAM (MRAM) device, it retains data indefinitely without power due to its intrinsic non-volatility. All 16 Mbit of main memory and the 256-byte augmented storage array preserve content through power loss, thermal cycling, and radiation exposure - eliminating battery maintenance, capacitor aging, and associated failure modes.

Can M10162040054X0ISAR be used as a direct replacement for standard SPI NOR flash in existing designs?

M10162040054X0ISAR is pin-compatible with standard 8-pin SOIC SPI memories and shares identical footprint, voltage, and timing interface requirements. However, it removes erase commands and supports true byte-level random writes - requiring only minor firmware updates to eliminate erase routines and leverage its instant-write capability. No PCB changes or layout modifications are needed for drop-in integration.

What protection mechanisms prevent unintended writes to M10162040054X0ISAR memory?

M10162040054X0ISAR implements dual-layer protection: hardware-based write protection via the WP# pin (active-low, configurable via Status Register bit SR[7]), and software-based block protection using BPSEL[2:0] bits to lock top/bottom memory regions. Additionally, the 256-byte augmented storage array supports per-section (32-byte) write locks, and the Serial Number register can be permanently disabled via SNPEN bit - providing defense-in-depth against firmware bugs or malicious overwrite.

Is M10162040054X0ISAR compatible with standard SPI controllers that do not support QPI or DDR modes?

Yes, M10162040054X0ISAR operates in standard Single SPI (1-1-1) mode with SDR timing at up to 54MHz, fully compatible with legacy SPI peripherals. QPI and DDR modes are optional enhancements; the device defaults to basic SPI operation on power-up. All instruction sets, status registers, and protection features remain accessible in 1-1-1 mode - ensuring seamless integration into existing embedded systems without controller upgrades.