STMicroelectronics M95512-DRMN3TP/K

Overview

M95512-DRMN3TP/K from STMicroelectronics is an AEC-Q100 Grade 0 qualified 512-Kbit serial SPI EEPROM for automotive applications, featuring 64 Kbyte memory organized in 512 × 128-byte pages, 16 MHz max clock (V_CC ≥ 4.5 V), and operation up to 145 °C. It includes Schmitt-trigger inputs, embedded ECC, and a lockable 128-byte Identification Page for device ID or secure parameter storage.

For engineers reviewing the M95512-DRMN3TP/K datasheet, M95512-DRMN3TP/K pinout, M95512-DRMN3TP/K application, or M95512-DRMN3TP/K equivalent, key selection criteria include automotive temperature rating (145 °C), block-wise write protection (1/4, 1/2, full), byte/page write times (≤4 ms), and SPI mode compatibility (CPOL=0/1, CPHA=0/1).

Technical Context

This EEPROM implements a true electrically erasable programmable memory array with on-die Error Correction Code logic enhancing data integrity across extended temperature cycles. Its SPI interface supports both CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, with input sampling on rising clock edge and output valid on falling edge.

The device integrates dual-level write protection: non-volatile Block Protect bits (BP1/BP0) control 1/4, 1/2, or full memory locking, while the SRWD bit and W pin jointly govern Status Register writability. The HOLD pin enables communication pause without chip deselection, preserving internal state during bus arbitration.

Key Specifications

Pinout & Package

Package: SO8 (MN), 150 mil width, RoHS-compliant and halogen-free (ECOPACK2®).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25DF512C-SSH-T and BR24G512FJ-3GE2, the M95512-DRMN3TP/K uniquely combines AEC-Q100 Grade 0 qualification, byte-alterable SPI EEPROM architecture, embedded ECC, and a lockable identification page-making it the only choice for safety-critical, high-cycle automotive parameter storage requiring deterministic timing and long-term data integrity.

Availability

M95512-DRMN3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, electric power steering systems, and body control modules requiring stable component supply across extended automotive lifecycles.

Supply support for M95512-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 over 40 years of EEPROM innovation and AEC-Q100 qualification expertise.

The M95512 series belongs to ST's automotive-grade serial EEPROM product line, engineered specifically for mission-critical data retention in extreme-temperature environments such as engine bays and transmission control units.

FAQ

What is the maximum clock frequency supported by M95512-DRMN3TP/K at 3.3 V supply?

At V_CC = 3.3 V, the device supports up to 10 MHz clock frequency, as specified in the DS8843 Rev 9 datasheet Section 8 (AC characteristics). This is validated across the full −40 °C to +125 °C operating range and ensures robust timing margin for SPI peripherals in ADAS processors.

How does the HOLD pin function during an active write cycle?

The HOLD pin cannot suspend an ongoing write cycle (t_W); it only pauses instruction transfers. If HOLD is asserted during a WRITE command, the device completes the current write before entering hold state. No data corruption occurs, and the internal address pointer remains intact for resumed operations.

Can the Identification Page be rewritten after being locked with the LID command?

No. Once the Lock Identification Page (LID) command executes successfully, the Identification Page becomes permanently read-only. The lock is irreversible and independent of W pin state or SRWD bit setting - this is a hardware-fused security feature confirmed in Section 4.10 of the datasheet.

What package variant does M95512-DRMN3TP/K use, and is it lead-free?

M95512-DRMN3TP/K uses the SO8 (MN) package: 8-lead plastic small outline, 150 mil body width, with ECOPACK2® certification confirming RoHS compliance and halogen-free construction. Lead finish is matte tin, fully compatible with standard SnPb and lead-free reflow profiles.