STMicroelectronics M95020-DRMN3TP/K

Overview

M95020-DRMN3TP/K from STMicroelectronics is an automotive-grade 2-Kbit serial SPI EEPROM with AEC-Q100 Grade 0 qualification, operating up to 145 °C at V_CC = 2.5–5.5 V. It features 256 × 8-bit memory organized in 16-byte pages, embedded ECC for data integrity, and a dedicated 16-byte lockable Identification Page used for device ID storage or application-critical parameters in automotive control modules.

For engineers reviewing the M95020-DRMN3TP/K datasheet, M95020-DRMN3TP/K pinout, M95020-DRMN3TP/K application, or M95020-DRMN3TP/K equivalent, key selection criteria include high-temperature endurance (600 k write cycles at 125 °C), 20 MHz max clock (≥4.5 V), block-level write protection (1/4, 1/2, or full memory), and SO8N RoHS-compliant packaging.

Technical Context

This SPI EEPROM implements CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes with input latching on rising C edge and output valid on falling C edge. Its protocol includes edge- and level-sensitive Chip Select (S) for robust command initiation and built-in Write Enable Latch (WEL) control requiring explicit WREN before any write operation.

The device integrates Schmitt-trigger inputs for noise immunity, supports Hold mode to pause ongoing transfers without deselecting, and uses a status register (WIP/WEL/BP1-BP0) to manage write readiness, enable state, and non-volatile block protection configuration - all accessible via standard SPI instructions including RDSR, WRSR, READ, WRITE, RDID, WRID, and LID.

Key Specifications

Pinout & Package

Package: SO8N (8-lead plastic small outline, 150 mil body width, RoHS-compliant and halogen-free ECOPACK2®).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial SPI EEPROM applications.

Compared with AT25DF021-SSH-T and BR24G02-3MNUX, M95020-DRMN3TP/K uniquely combines AEC-Q100 Grade 0 qualification, embedded ECC, lockable ID page, and 20 MHz SPI speed - making it the sole fit for high-reliability automotive parameter storage demanding both endurance and security.

Availability

M95020-DRMN3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, and electric power steering systems requiring stable component supply across extended automotive product lifecycles.

Supply support for M95020-DRMN3TP/K 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

STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power management solutions, with broad portfolio certification to AEC-Q100 and ISO 26262 standards.

The M95020 series belongs to ST's automotive-qualified serial EEPROM product line, designed specifically for robust, high-temperature non-volatile storage of calibration data, safety parameters, and configuration settings in safety-critical vehicle subsystems.

FAQ

What is the maximum clock frequency supported by M95020-DRMN3TP/K, and how does supply voltage affect it?

The device supports up to 20 MHz at V_CC ≥ 4.5 V, 10 MHz at V_CC ≥ 2.5 V, and 5 MHz at V_CC ≥ 1.7 V. This voltage-dependent scaling allows system designers to maintain high-speed communication during nominal operation while ensuring reliable function during brown-out conditions common in automotive 12 V networks.

How is write protection implemented on M95020-DRMN3TP/K?

Write protection uses dual-layer control: hardware via the W pin (locking Status Register writes) and software via BP1/BP0 bits in the Status Register, which configure protection for none, upper quarter (C0h–FFh), upper half (80h–FFh), or full memory. The Identification Page adds further security via the LID instruction to permanently lock its contents.

Does M95020-DRMN3TP/K include error correction, and how is it applied?

Yes - it integrates dedicated ECC logic that performs single-bit error correction on every 8-bit word read from the main memory array. This occurs transparently during READ operations and enhances data integrity without requiring host-side software overhead, critical for ASIL-B compliant systems.

What package type is used for M95020-DRMN3TP/K, and what are its key mechanical features?

M95020-DRMN3TP/K uses the SO8N package: 8-lead plastic small outline with 150 mil body width, RoHS-compliant and halogen-free (ECOPACK2®). It features standard 1.27 mm pitch, JEDEC MS-012AC footprint compatibility, and is qualified for reflow soldering per J-STD-020, supporting automated PCB assembly in automotive production lines.