STMicroelectronics M95160-DFDW6TP

Overview

M95160-DFDW6TP from STMicroelectronics is a 16-Kbit serial SPI bus EEPROM with 2 Kbytes memory array, 32-byte page size, and an additional lockable Identification Page. It operates from 1.7 V to 5.5 V supply, supports 20 MHz clock speed, and delivers >4 million write cycles with >200-year data retention across –40°C to +85°C. Used for secure parameter storage in industrial control firmware updates.

For engineers reviewing the M95160-DFDW6TP datasheet, M95160-DFDW6TP pinout, M95160-DFDW6TP application, or M95160-DFDW6TP equivalent, key selection criteria include low-voltage operation (1.7 V min), hardware write protection granularity (quarter/half/whole array), Identification Page lockability, and ECOPACK2® TSSOP8 package compatibility with high-density PCB layouts.

Technical Context

This EEPROM implements a standard SPI interface with CPOL=0/CPHA=0 and CPOL=1/CPHA=1 mode support. Data is latched on the rising edge of Serial Clock (C) and output on its falling edge, ensuring timing compliance with common microcontroller SPI peripherals.

The device integrates a Status Register with BP1/BP0 bits controlling write-protect block size, SRWD bit enabling permanent write protection of the Status Register, and WEL/WIP flags managing write enable state and in-progress status. The Identification Page (32 bytes) is accessible only in M95160-D variants and supports permanent read-only lock via Lock ID instruction.

Key Specifications

Pinout & Package

TSSOP8 (DW) package: 8-lead thin shrink small outline, 3 × 4.4 mm body, 0.5 mm pitch, ECOPACK2® RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25160B-SSHL-T and BR24G16FJ-3GE2, M95160-DFDW6TP uniquely combines 1.7 V operation, 20 MHz SPI, and hardware-lockable Identification Page-making it optimal for security-aware, high-throughput embedded systems where pin- and protocol-compatibility with legacy SPI designs is mandatory.

Availability

M95160-DFDW6TP is available at Aetrix Electronics and suitable for industrial PLC configuration storage, medical device calibration archiving, and smart energy meter firmware metadata management requiring stable component supply over extended production lifecycles.

Supply support for M95160-DFDW6TP 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 microcontrollers, power management, sensors, and nonvolatile memory solutions for industrial, automotive, and consumer markets.

M95160-DFDW6TP belongs to ST's serial EEPROM product line, engineered for robust, low-power, secure parameter storage in harsh environments-targeting applications demanding long-term data integrity and hardware-enforced write protection.

FAQ

What is the function of the HOLD pin on M95160-DFDW6TP?

The HOLD pin pauses ongoing SPI communication without deselecting the device. When asserted low while Chip Select (S) is active, Serial Data Output (Q) enters high-impedance state and Serial Clock (C)/Data Input (D) are ignored. This allows the host MCU to temporarily suspend EEPROM access-e.g., during interrupt servicing-without aborting or restarting the transaction. Recovery resumes automatically upon HOLD deassertion.

How does the Identification Page differ from standard memory pages?

The Identification Page is a dedicated 32-byte region accessible only in M95160-D variants (including M95160-DFDW6TP). Unlike standard pages, it supports Lock ID instruction to permanently disable further writes, making it ideal for storing immutable values like cryptographic keys or factory-calibrated coefficients. Its address space is separate, and read/write commands require distinct opcodes (0x4B and 0x42) not used for main array access.

Can M95160-DFDW6TP operate reliably at 1.7 V during power-up sequences?

Yes. The device guarantees full functionality-including SPI communication, write operations, and Status Register access-at VCC = 1.7 V across the full temperature range (–40°C to +85°C). Internal voltage regulation ensures stable core operation even during brown-out conditions, and power-up timing (tPU) is specified at 1.7 V in the datasheet. No external reset supervisor is required for valid initialization at minimum supply.

What package variants are offered for M95160-DF, and which is used in M95160-DFDW6TP?

M95160-DF is available in SO8 (MN), TSSOP8 (DW), UFDFPN8 (MC), WLCSP (CS), and unsawn wafer. M95160-DFDW6TP specifically uses the TSSOP8 (DW) package: 8-lead, 3 × 4.4 mm body, 0.5 mm pitch, ECOPACK2® compliant. This variant offers superior thermal dissipation and PCB assembly compatibility compared to WLCSP, while occupying less board area than SO8.