My Inquiry
My Account
STMicroelectronics M95040-DRMN8TP/K
- Part No.:
- M95040-DRMN8TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M95040-DRMN8TP/K.pdf
- Description:
- IC EEPROM 4KBIT SPI 20MHZ 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,879
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
M95040-DRMN8TP/K from STMicroelectronics is a 4-Kbit serial SPI EEPROM with 512 × 8-bit memory array organized in 32 pages of 16 bytes, rated for operation up to 105 °C and supply voltage range 1.7 V to 5.5 V, featuring embedded ECC logic, programmable block write protection (1/4, 1/2, or full memory), and a dedicated 16-byte lockable Identification page used for device ID storage and application parameter retention in automotive and industrial control systems.
For engineers reviewing the M95040-DRMN8TP/K datasheet, M95040-DRMN8TP/K pinout, M95040-DRMN8TP/K application, or M95040-DRMN8TP/K equivalent, this page delivers verified electrical specs, validated SO8N package mapping, confirmed SPI timing behavior (20 MHz @ VCC ≥ 4.5 V), real-world endurance data (4M cycles @ 25 °C), and functional alternatives for AEC-Q100 Grade 2–compliant nonvolatile memory selection.
Technical Context
This SPI EEPROM implements CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes with input latching on rising clock edge and output shifting on falling edge. It integrates a status register with WIP (Write In Progress) and WEL (Write Enable Latch) bits, plus BP1/BP0 non-volatile block protection configuration.
The device supports byte and page write operations (≤4 ms), includes Schmitt-trigger inputs for noise immunity, and embeds Error Correction Code (ECC x 1) to enhance data integrity across its 512-byte main array and separate 16-byte Identification page - which can be permanently locked after programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 bytes), organized as 32 × 16-byte pages - enables efficient firmware parameter storage with minimal bus overhead. |
| Max clock frequency | 20 MHz at VCC ≥ 4.5 V - supports high-throughput configuration updates in fast-booting microcontroller systems. |
| Operating temperature | −40 °C to +105 °C - qualified per AEC-Q100 Grade 2 for under-hood automotive and industrial motor control applications. |
| Write endurance | 4 million cycles at 25 °C - ensures reliable logging and calibration data retention over 10+ years in field-deployed equipment. |
| Data retention | 50+ years at 105 °C - guarantees long-term validity of safety-critical configuration data without refresh. |
| Write protection | Configurable via BP1/BP0 bits: none, upper quarter (180h–1FFh), upper half (100h–1FFh), or full memory + ID page - prevents accidental overwrite of critical firmware tables. |
| ECC support | Embedded single-bit error correction (ECC x 1) - detects and corrects bit flips in main memory array, improving system-level reliability without host software overhead. |
Pinout & Package
Package: SO8N (150 mil width, RoHS-compliant ECOPACK2®), 8-pin plastic small outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S | Chip Select | Active-low enable signal; falling edge initiates command decoding; must remain low throughout instruction sequence. |
| C | Serial Clock | Input synchronizing all SPI transfers; data latched on rising edge, output shifted on falling edge. |
| D | Serial Data Input | Input for instructions, addresses, and write data; MSB-first, latched on rising C edge. |
| Q | Serial Data Output | Output for read data and status bits; high-impedance when S is high or HOLD is active. |
| W | Write Protect | Hardware pin controlling Status Register write access; tied high to prevent inadvertent SR modification. |
| HOLD | Hold Control | Active-low pause signal; suspends ongoing SPI transaction without deselecting device or resetting clock phase. |
| VSS | Ground Reference | Common return path for all signals and VCC; required for stable logic thresholds and noise margin. |
| VCC | Supply Voltage | 1.7 V to 5.5 V operating range - interoperable with 1.8 V, 3.3 V, and 5 V microcontrollers without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| Identification Page | 16-byte dedicated area storing ST device ID (bytes 0–2) and user-configurable parameters, lockable permanently to prevent tampering. |
| Schmitt-trigger inputs | Enhanced noise immunity on S, C, D, HOLD, and W pins - eliminates false triggering in electrically noisy engine control or factory automation environments. |
| Flexible write protection | Non-volatile BP1/BP0 bits allow hardware- and software-controlled partitioning of protected zones - simplifies secure bootloader and calibration data management. |
| Low-power standby mode | ICC1 ≤ 1 µA at VCC = 5.5 V and TA = 25 °C - reduces system quiescent current in always-on automotive modules. |
| Fast write cycle | ≤4 ms for both byte and page writes - enables rapid reconfiguration during runtime without blocking host CPU for extended periods. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing adaptive fuel trim values, fault code history, and calibration constants that persist across ignition cycles and battery disconnects. IC Role / Device Role / Timing Role: Nonvolatile parameter store interfaced directly to ECU's SPI master; accessed during boot and runtime for closed-loop tuning. Use Value: AEC-Q100 Grade 2 qualification and 105 °C operation ensure data integrity in under-hood thermal environments where silicon-based alternatives fail. |
Use Scenario: Retaining I/O mapping tables, PID loop coefficients, and user-defined alarm thresholds across power loss in modular control cabinets. IC Role / Device Role / Timing Role: SPI-configurable memory co-located with PLC's MCU; updated only during commissioning or maintenance mode. Use Value: Block-level write protection prevents corruption during brown-out events, while ECC ensures deterministic behavior in EMI-heavy factory floors. |
| Medical Infusion Pump Calibration | Smart Meter Firmware Parameterization |
|
Use Scenario: Holding dose accuracy calibration offsets, delivery rate profiles, and audit logs traceable to regulatory requirements (IEC 62304). IC Role / Device Role / Timing Role: Secure, tamper-resistant memory storing safety-critical settings; ID page locked post-calibration to prevent unauthorized modification. Use Value: 50-year data retention at 105 °C exceeds medical device shelf-life expectations, eliminating periodic recalibration mandates. |
Use Scenario: Storing tariff schedules, metering constants, and cryptographic keys in utility-grade electricity meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: SPI EEPROM integrated into metrology SoC subsystem; accessed during firmware update and time-of-use switching. Use Value: ECOPACK2® halogen-free packaging meets RoHS/REACH compliance for global grid infrastructure, while 4M write cycles support decades of firmware revisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25040B-MAHN-T (Microchip) | Same 4-Kbit density and SO8N package, but rated only to 85 °C and lacks embedded ECC logic. | Not qualified for AEC-Q100; unsuitable for under-hood automotive use or high-temp industrial deployments. | Select only for cost-sensitive consumer applications where 105 °C operation and ECC are not required. |
| BR24G04FJ-WE2 (ROHM) | 4-Kbit SPI EEPROM with 105 °C rating and built-in write protect, but uses different status register layout and no dedicated ID page. | Lacks lockable identification page - limits secure device authentication and parameter binding capabilities. | Prefer when simple parameter storage suffices and ST-specific ID verification or permanent locking is unnecessary. |
Compared with AT25040B-MAHN-T and BR24G04FJ-WE2, the M95040-DRMN8TP/K uniquely combines AEC-Q100 Grade 2 qualification, embedded ECC, and a lockable ID page - making it the only choice for safety-critical, high-temperature, and anti-tampering applications requiring certified data integrity.
Availability
M95040-DRMN8TP/K is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC configuration, medical infusion pump calibration, and smart meter firmware parameterization requiring stable component supply across extended product lifecycles.
Supply support for M95040-DRMN8TP/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 management ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.
The M95040-DRMN8TP/K belongs to ST's automotive-grade serial EEPROM product line, engineered specifically to meet AEC-Q100 reliability standards and support mission-critical data retention in harsh thermal and electrical environments.
FAQ
What is the maximum SPI clock frequency supported by M95040-DRMN8TP/K at 3.3 V supply?
At VCC = 3.3 V, the device supports up to 10 MHz SPI clock frequency, as specified in the datasheet's AC characteristics table (DS10889 Rev 3, Table 10). This ensures compatibility with standard 3.3 V microcontrollers while maintaining timing margins for robust communication in noisy environments.
How is write protection configured on the M95040-DRMN8TP/K?
Write protection is controlled by two non-volatile BP1 and BP0 bits in the status register, programmed via the Write Status Register (WRSR) instruction. These bits define protected blocks: none, upper quarter (180h–1FFh), upper half (100h–1FFh), or full memory plus ID page - enabling flexible, persistent memory partitioning.
Does the M95040-DRMN8TP/K include error correction capability?
Yes, the device embeds single-bit Error Correction Code (ECC x 1) logic across its 512-byte main memory array. This hardware ECC detects and corrects single-bit errors without host intervention, significantly improving data reliability in electrically noisy or radiation-prone applications like automotive and industrial control.
Can the Identification Page be written to and locked after programming?
Yes - the 16-byte Identification Page accepts user data after initial ST device ID (bytes 0–2), and can be permanently locked in read-only mode using the Lock Identification Page (LID) instruction. Once locked, no further writes to the ID page are possible, ensuring immutability of calibrated or authenticated parameters.
M95040-DRMN8TP/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:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 20 MHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
M95040-DRMN8TP/K FAQ
1.How can I place an order for M95040-DRMN8TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M95040-DRMN8TP/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 M95040-DRMN8TP/K reliable?
The price and inventory of M95040-DRMN8TP/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95040-DRMN8TP/K is usually 5 days.
3.What payment methods are accepted for M95040-DRMN8TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95040-DRMN8TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M95040-DRMN8TP/K?
M95040-DRMN8TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M95040-DRMN8TP/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 M95040-DRMN8TP/K?
For technical support, including M95040-DRMN8TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95040-DRMN8TP/K requirements.
6.How does Aetrix verify that M95040-DRMN8TP/K is sourced from the original manufacturer or authorized distributors?
All M95040-DRMN8TP/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 M95040-DRMN8TP/K meets industry standards.
7.What is the process for return or replacement of M95040-DRMN8TP/K?
All M95040-DRMN8TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M95040-DRMN8TP/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 M95040-DRMN8TP/K part is unused and in its original packaging.
Return procedure for M95040-DRMN8TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M95040-DRMN8TP/K Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
