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Home > Products > Integrated Circuits (ICs) > Memory > Memory

STMicroelectronics M95512-DFCS6TP/K

Name: M95512-DFCS6TP/K
Brand: STMicroelectronics
SKU: M95512-DFCS6TP/K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M95512-DFCS6TP/K

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 8-UFBGA, WLCSP

Datasheet:: M95512-DFCS6TP/K.pdf

Description:: IC EEPROM 512KBIT SPI 8WLCSP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

M95512-DFCS6TP/K from STMicroelectronics is a 512-Kbit (64-Kbyte) serial SPI EEPROM with 1.7 V to 5.5 V single-supply operation, 128-byte page size, and an additional lockable 128-byte Identification page. It supports 16 MHz clock speed, offers >4 million write cycles and >200-year data retention, and is qualified for industrial temperature range (−40 °C to +85 °C). Used in firmware parameter storage, calibration data logging, and secure device identity management in embedded controllers.

For engineers reviewing the M95512-DFCS6TP/K datasheet, M95512-DFCS6TP/K pinout, M95512-DFCS6TP/K application, or M95512-DFCS6TP/K equivalent, this page delivers verified electrical specs, package-specific terminal mapping, real-world use cases, and validated alternative parts - all grounded in STMicroelectronics DS4192 Rev 24 (Sept 2021).

Technical Context

The M95512-DF implements a standard SPI interface with CPOL/CPHA = (0,0) or (1,1), latching input on rising C edge and outputting on falling C edge. Its memory array is organized as 65536 × 8 bits, with dedicated logic for Identification page access (RDID/WRID/LID instructions) and hardware/software write protection via BP1/BP0 bits and SRWD+W pin interaction.

It integrates an internal high-voltage generator and sequencer for EEPROM programming, ECC-enabled sense amplifiers, and a status register with WIP, WEL, BP1, BP0, and SRWD bits. The HOLD pin enables communication pause without chip deselection, and the W pin provides hardware-level lock of non-volatile status bits when SRWD = 1.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	512 Kbit (64 Kbyte), organized as 65536 × 8 bits - directly addressable via two-byte addressing with MSB-first protocol.
Supply Voltage Range	1.7 V to 5.5 V - enables direct interfacing with 1.8 V microcontrollers and legacy 3.3 V/5 V systems without level shifters.
Max Clock Frequency	16 MHz - supports fast configuration loading and high-throughput parameter updates in real-time systems.
Write Time	≤5 ms per byte or per 128-byte page - deterministic timing simplifies host-side timeout handling and avoids polling overhead.
Data Retention	>200 years at +25 °C - ensures long-term reliability for field-deployed equipment with infrequent reprogramming.
Endurance	>4 million write cycles - exceeds typical industrial lifecycle requirements for calibration or event-log storage.
Operating Temp	−40 °C to +85 °C - qualified for under-hood automotive ECUs, industrial PLCs, and outdoor IoT gateways.

Pinout & Package

Package: UFDFPN8 (2 mm × 3 mm, 0.5 mm pitch, ECOPACK2-compliant). Exposed pad (EP) is electrically connected to VSS and must be soldered for thermal and EMI performance.

Pin/Terminal	Circuit Role	Design Meaning
S	Chip Select	Active-low enable; falling edge required after power-up before first instruction; deselecting resets internal state except WEL/WIP.
C	Serial Clock	Input timing reference; data latched on rising edge (D), output shifted on falling edge (Q); supports CPOL/CPHA = (0,0) or (1,1).
D	Serial Data Input	Input for instructions, addresses, and write data; MSB-first; sampled on rising C edge.
Q	Serial Data Output	Output for read data and status register contents; high-impedance when S is high or HOLD is active.
W	Write Protect	Hardware control for SRWD bit: when SRWD = 1 and W = low, BP1/BP0/SRWD become read-only and WRSR is blocked.
HOLD	Communication Hold	Pauses ongoing SPI transaction without resetting clock phase; requires S = low to activate; Q goes high-Z, D/C ignored.
VCC	Supply Voltage	1.7–5.5 V power rail; requires local 10–100 nF decoupling capacitor near pins for stable write operations.
VSS	Ground	Reference for all signals and internal circuitry; must be connected to system ground plane with low-inductance path.

Key Features

Feature	Design Value
Identification Page	128-byte dedicated memory area accessible only via RDID/WRID/LID instructions - used for storing immutable device IDs or cryptographic keys.
Hardware Write Lock	SRWD + W pin combination permanently disables Status Register writes - prevents accidental or malicious modification of BP1/BP0 protection settings.
Flexible Block Protection	BP1/BP0 bits configure 0%, 25%, 50%, or 100% memory array write-protection - enables tiered security for boot code vs. user data regions.
Industrial Temperature Support	Guaranteed operation from −40 °C to +85 °C with full AC/DC specs - eliminates derating concerns in harsh environments.
ECOPACK2 Packaging	RoHS-compliant, halogen-free UFDFPN8 package with exposed thermal pad - meets IPC/JEDEC standards for automated assembly and thermal reliability.

Applications

Industrial Sensor Calibration

Automotive ECU Configuration

Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in programmable logic controllers and smart transmitters.

IC Role / Device Role / Timing Role: Non-volatile parameter storage with guaranteed 200-year retention and 4M-cycle endurance for field recalibration events.

Use Value: Eliminates need for external backup batteries or supercapacitors; supports over-the-air (OTA) calibration updates without risk of corruption during power loss.

Use Scenario: Holding vehicle-specific configuration data (e.g., VIN-derived feature enablement, CAN node ID, emission mode flags) in engine control units and body control modules.

IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store with hardware-locked Identification page for anti-cloning and regulatory compliance.

Use Value: Enables OEM-level personalization and regional variant management while preventing unauthorized reprogramming of safety-critical parameters.

Medical Device Audit Logs

Smart Meter Firmware Parameters

Use Scenario: Recording timestamped usage events, self-test results, and maintenance history in Class II medical instruments requiring FDA 21 CFR Part 11 compliance.

IC Role / Device Role / Timing Role: Tamper-evident, write-protected log storage with hardware-enforced write lock (LID command) after audit completion.

Use Value: Meets regulatory traceability requirements by ensuring logged data cannot be altered post-recording - critical for audit trail integrity.

Use Scenario: Storing tariff schedules, metering constants, and utility-specific communication profiles in ANSI C12.22-compliant smart electricity meters.

IC Role / Device Role / Timing Role: High-reliability parameter store operating across wide temperature swings and long deployment lifetimes (>15 years).

Use Value: Guarantees accurate billing data persistence despite frequent power cycling and grid voltage fluctuations - no data loss over decades of service.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT25DF512C-SSH-T	512 Kbit SPI Flash (not EEPROM); lacks Identification page; no hardware write lock (SRWD+W); 100k erase cycles.	Requires explicit erase-before-write; unsuitable for frequent small-parameter updates or secure ID storage.	Select only if cost-sensitive and application tolerates flash latency/erase constraints.
M95512-RCS6TP/K	Same density and pinout; 1.8–5.5 V supply (vs. 1.7–5.5 V); no Identification page; identical timing and protection features.	Cannot store locked device identity or cryptographic keys; suitable where only main array storage is needed.	Choose when lower minimum voltage (1.7 V) is unnecessary and Identification page functionality is unused.

Compared with AT25DF512C-SSH-T and M95512-RCS6TP/K, the M95512-DFCS6TP/K uniquely combines ultra-low 1.7 V operation, a dedicated lockable Identification page, and hardware-enforced status register protection - making it the only option for secure, battery-free, low-voltage embedded identity and calibration storage.

Availability

M95512-DFCS6TP/K is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, medical device audit logs, and smart meter firmware parameter storage requiring stable component supply across multi-year production cycles.

Supply support for M95512-DFCS6TP/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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory products for industrial, automotive, and consumer markets.

The M95512 series belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, secure non-volatile storage in resource-constrained embedded systems where data integrity and long-term reliability are mission-critical.

FAQ

What is the function of the HOLD pin on M95512-DFCS6TP/K?

The HOLD pin pauses ongoing SPI communication without deselecting the device or resetting the clock phase. When asserted low (with S = low), Q goes high-impedance and D/C are ignored, allowing the host MCU to service higher-priority interrupts while preserving transaction state. It resumes automatically when HOLD returns high.

How does the Identification page differ from the main memory array?

The Identification page is a separate 128-byte region accessible only via RDID/WRID/LID instructions - not through standard READ/WRITE. Once locked with LID, it becomes permanently read-only. It is physically isolated and intended for immutable data like device serial numbers or cryptographic keys, unlike the main array used for general-purpose parameter storage.

Can M95512-DFCS6TP/K operate reliably at 1.7 V?

Yes - the M95512-DF variant is fully specified down to 1.7 V across the full −40 °C to +85 °C temperature range, including all AC timing (e.g., tW ≤ 5 ms) and DC parameters (e.g., VIH/VIL thresholds). This enables direct interfacing with 1.8 V I/O domains without level translation, unlike the M95512-R (min 1.8 V) or M95512-W (min 2.5 V).

What happens when both W pin and SRWD bit are active?

When SRWD = 1 and W is driven low, the device enters Hardware Protected mode: BP1, BP0, and SRWD bits become read-only, and the WRSR instruction is rejected. This prevents any software-based modification of memory protection settings - a critical safeguard for certified or safety-critical applications where configuration integrity must be physically enforced.

M95512-DFCS6TP/K Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-UFBGA, WLCSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 512Kbit

Memory Organization:: 64K x 8

Memory Interface:: SPI

Clock Frequency:: 16 MHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: -

Voltage - Supply:: 1.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-WLCSP

M95512-DFCS6TP/K FAQ

1.How can I place an order for M95512-DFCS6TP/K through Aetrix?

Please submit a Request for Quotation (RFQ) for M95512-DFCS6TP/K on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for M95512-DFCS6TP/K reliable?

The price and inventory of M95512-DFCS6TP/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95512-DFCS6TP/K is usually 5 days.

3.What payment methods are accepted for M95512-DFCS6TP/K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95512-DFCS6TP/K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M95512-DFCS6TP/K?

M95512-DFCS6TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M95512-DFCS6TP/K order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for M95512-DFCS6TP/K?

For technical support, including M95512-DFCS6TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95512-DFCS6TP/K requirements.

6.How does Aetrix verify that M95512-DFCS6TP/K is sourced from the original manufacturer or authorized distributors?

All M95512-DFCS6TP/K products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M95512-DFCS6TP/K meets industry standards.

7.What is the process for return or replacement of M95512-DFCS6TP/K?

All M95512-DFCS6TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M95512-DFCS6TP/K, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The M95512-DFCS6TP/K part is unused and in its original packaging.

Return procedure for M95512-DFCS6TP/K:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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