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STMicroelectronics M95M01-DWMN3TP/K
- Part No.:
- M95M01-DWMN3TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M95M01-DWMN3TP/K.pdf
- Description:
- IC EEPROM 1MBIT SPI 16MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:19,606
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Product details
Overview
M95M01-DWMN3TP/K from STMicroelectronics is an automotive-grade 1-Mbit serial SPI EEPROM with AEC-Q100 Grade 0 qualification, ASIL-B ready compliance, and operation up to +145°C. It features 512 pages × 256 bytes, embedded ECC for data integrity, a lockable 256-byte identification page, and supports up to 16 MHz SPI clock (CPOL=0/1, CPHA=0/1). It is used in engine control units for storing calibration parameters requiring long-term reliability under thermal stress.
For engineers reviewing the M95M01-DWMN3TP/K datasheet, M95M01-DWMN3TP/K pinout, M95M01-DWMN3TP/K application, or M95M01-DWMN3TP/K equivalent, key selection criteria include its extended temperature range (+145°C), hardware/software write protection architecture, 4 million write cycles at 25°C, and SO8N package compatibility with legacy automotive PCB layouts.
Technical Context
This device implements a byte-alterable 131072 × 8-bit memory array organized into 512 pages, with dedicated ECC logic correcting single-bit errors and detecting double-bit errors during read operations. The status register includes WIP, WEL, BP1/BP0, and SRWD bits enabling granular block protection and write-lock control.
It supports two SPI modes (CPOL=0/CPHA=0 and CPOL=1/CPHA=1) with data latched on rising clock edge and output shifted on falling edge. The HOLD pin enables communication pause without chip deselection, while the W pin provides hardware-level freeze of BP1/BP0 configuration when SRWD=1 and W=low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 1 Mbit (131072 × 8 bits), organized as 512 pages of 256 bytes - enables efficient firmware parameter storage with page-aligned writes. |
| Operating temperature | –40°C to +145°C - qualified for under-hood automotive applications including transmission control and exhaust aftertreatment systems. |
| SPI clock frequency | Up to 16 MHz - supports high-speed configuration loading in real-time control loops without bus contention. |
| Write endurance | 4 million cycles at 25°C, 400 k cycles at 145°C - ensures reliable recalibration logging over full vehicle lifetime in high-temperature zones. |
| Data retention | 100 years at 25°C - guarantees nonvolatile storage integrity for safety-critical calibration data across product lifecycle. |
| Supply voltage | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V automotive microcontroller I/O domains without level-shifting. |
| Package | SO8N (150 mil width) - industry-standard footprint enabling drop-in replacement in existing AEC-Q100-compliant designs. |
Pinout & Package
Delivered in SO8N (150 mil width) package per ECOPACK2 environmental compliance, with 8-pin dual-inline outline and standard pin 1 marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C | Serial clock input | Timing reference for all SPI transfers; data latched on rising edge, output shifted on falling edge. |
| D | Serial data input | Receives instruction opcodes, addresses, and write data; MSB-first protocol with strict byte-boundary timing. |
| Q | Serial data output | Drives read data, status register contents, or ID page bytes; high-impedance when deselected or in HOLD state. |
| S | Chip select input | Edge- and level-sensitive enable; falling edge required after power-up before first command execution. |
| W | Write protect input | Freezes BP1/BP0 block protection settings when SRWD=1 and W=low - prevents accidental reconfiguration in field operation. |
| HOLD | Communication hold input | Pauses ongoing SPI transfer without resetting internal address counter or command state; requires S=low to activate. |
| VCC | Power supply | 2.5–5.5 V nominal; must remain stable during all operations to avoid corruption or latch-up. |
| VSS | Ground reference | Common return for all signals; must be low-impedance and decoupled near device pins. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded ECC logic | Corrects single-bit errors and detects double-bit errors in real time during memory reads - eliminates need for external error-handling firmware overhead. |
| Lockable identification page | 256-byte dedicated area storing ST device ID and user parameters; permanently locked via LID instruction to prevent tampering or overwrite. |
| ASIL-B ready compliance | Meets ISO 26262 functional safety requirements for B-class systems - enables use in safety-managed subsystems without additional hardware redundancy. |
| Schmitt trigger inputs | Integrated noise filtering on all digital inputs (C, D, S, W, HOLD) - ensures robust operation in electrically noisy automotive environments. |
| Ultra-low standby current | 0.6 μA typical ICC1 - minimizes battery drain in always-on vehicle modules such as telematics gateways and body controllers. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Storing and updating fuel injection timing maps and knock sensor calibration coefficients during adaptive learning cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with ECC-protected read path and hardware-frozen upper quarter memory block. Use Value: Enables field-updatable calibration without risk of corruption during engine cranking transients or load dump events. |
Use Scenario: Retaining camera lens distortion correction coefficients and radar object classification thresholds across ignition cycles. IC Role / Device Role / Timing Role: High-reliability parameter vault supporting ASIL-B diagnostic coverage requirements. Use Value: Guarantees consistent sensor fusion accuracy by preserving factory-trimmed values through 15+ year vehicle service life. |
| Electric Power Steering (EPS) | Exhaust Aftertreatment Control |
|
Use Scenario: Logging torque sensor zero-point drift compensation values and motor phase offset corrections during vehicle assembly and service. IC Role / Device Role / Timing Role: Secure, lockable memory for safety-critical actuator calibration data with write-protection enforced by W pin and SRWD bit. Use Value: Prevents unauthorized modification of steering assist profiles while allowing OEM service tools to update parameters via authenticated interface. |
Use Scenario: Storing diesel particulate filter (DPF) regeneration cycle counters, catalyst aging models, and NOx sensor baseline offsets. IC Role / Device Role / Timing Role: High-temperature EEPROM operating continuously at 145°C ambient near exhaust manifolds. Use Value: Maintains accurate emissions control logic despite thermal cycling between –40°C cold start and +145°C exhaust heat soak conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041A-SSH-T | 4-Mbit density, no ECC, max +105°C operation, lacks ASIL-B readiness and identification page locking. | Targeted at infotainment and gateway modules where extended temperature and functional safety are not required. | Select only if higher density is needed and thermal/safety requirements are relaxed. |
| BR24G128FJ-WE2 | I²C interface (not SPI), 128-Kbit capacity, +125°C max, no hold pin or identification page. | Suitable for body electronics with lower data volume and simpler bus architecture. | Choose only for I²C-based designs where SPI compatibility and extended temperature are not mandatory. |
Compared with AT25DF041A-SSH-T and BR24G128FJ-WE2, M95M01-DWMN3TP/K uniquely combines SPI interface, +145°C operation, ASIL-B readiness, ECC, and lockable ID page - making it the sole fit for safety-critical, high-temperature automotive control nodes requiring guaranteed data integrity.
Availability
M95M01-DWMN3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, electric power steering modules, and exhaust aftertreatment systems requiring stable component supply across extended automotive lifecycles.
Supply support for M95M01-DWMN3TP/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 solutions for automotive, industrial, and consumer markets.
M95M01-DWMN3TP/K belongs to ST's automotive-qualified serial EEPROM product line, engineered specifically for mission-critical data storage in harsh-temperature, safety-managed electronic control units.
FAQ
What is the maximum operating temperature for M95M01-DWMN3TP/K?
The M95M01-DWMN3TP/K is rated for continuous operation from –40°C to +145°C, meeting AEC-Q100 Grade 0 qualification. This rating is validated for the CMOSF8H process variant, confirmed in DS9048 Rev 7 Section 1 and Table 1, and applies specifically to the SO8N-packaged version.
Does M95M01-DWMN3TP/K support SPI mode CPOL=1, CPHA=1?
Yes, M95M01-DWMN3TP/K supports both CPOL=0/CPHA=0 and CPOL=1/CPHA=1 SPI modes. Data are latched on the rising edge of C and output on the falling edge in both modes, differing only in idle clock polarity - verified in DS9048 Rev 7 Section 4.2 and Figure 4.
How is the identification page protected from accidental overwrite?
The 256-byte identification page is protected via the LID (Lock Identification Page) instruction, which permanently disables further writes to that page. Once executed, RDID remains functional but WRID and subsequent LID commands are ignored - detailed in DS9048 Rev 7 Sections 4.5 and 5.10.
Can the HOLD pin be used during an active write cycle?
No - the HOLD function is disabled during active write cycles (WIP=1). Attempting to assert HOLD while WIP=1 has no effect; the device continues the internal tW timing sequence. HOLD is only effective during read, status, or instruction phases - specified in DS9048 Rev 7 Section 4.3 and Figure 5 timing constraints.
M95M01-DWMN3TP/K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 16 MHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M95M01-DWMN3TP/K FAQ
1.How can I place an order for M95M01-DWMN3TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M95M01-DWMN3TP/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 M95M01-DWMN3TP/K reliable?
The price and inventory of M95M01-DWMN3TP/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95M01-DWMN3TP/K is usually 5 days.
3.What payment methods are accepted for M95M01-DWMN3TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95M01-DWMN3TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M95M01-DWMN3TP/K?
M95M01-DWMN3TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M95M01-DWMN3TP/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 M95M01-DWMN3TP/K?
For technical support, including M95M01-DWMN3TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95M01-DWMN3TP/K requirements.
6.How does Aetrix verify that M95M01-DWMN3TP/K is sourced from the original manufacturer or authorized distributors?
All M95M01-DWMN3TP/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 M95M01-DWMN3TP/K meets industry standards.
7.What is the process for return or replacement of M95M01-DWMN3TP/K?
All M95M01-DWMN3TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M95M01-DWMN3TP/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 M95M01-DWMN3TP/K part is unused and in its original packaging.
Return procedure for M95M01-DWMN3TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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