M95040-DRMN3TP/K - 4Kbit SPI EEPROM | STMicroelectronics
MPN: M95040-DRMN3TP/K ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.4 | $4.00 |
| 100 | $0.35 | $35.00 |
| 500 | $0.3 | $150.00 |
| 1,000 | $0.25 | $250.00 |
Drop-in alternatives for M95040-DRMN3TP/K — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
M95040-DRMN3TP
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M95040-DRMN6TP
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25AA040
✅ Drop-In📋 Reference alternative (not in catalog)
CAT25040
✅ Drop-In📋 Reference alternative (not in catalog)
BR25S040
✅ Drop-In📋 Reference alternative (not in catalog)
M95040-DRMN3TP/K Maximum Ratings & Electrical Characteristics
| Memory Size | 4 Kbit (512 x 8) |
| Interface Type | SPI |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Maximum Clock Frequency | 10 MHz |
| Write Cycle Time | 5 ms |
| Page Size | 16 bytes |
| Operating Temperature Range | -40°C to +85°C |
| Package | SO-8N |
| Mounting Type | Surface Mount |
| Standby Current | 2 µA (max) |
| Active Current | 2 mA (max at 5.5V) |
| Write Protection | Hardware (W pin) and Software (BP0, BP1) |
| SPI Modes | Mode 0 and Mode 3 |
| RoHS Status | Compliant |
| AEC-Q100 | Qualified (automotive grade) |
M95040-DRMN3TP/K Pin Configuration
| Pin 1 | S — Chip Select (active low) |
| Pin 2 | C — Serial Clock |
| Pin 3 | D — Serial Data Input |
| Pin 4 | Q — Serial Data Output |
| Pin 5 | W — Write Protect (active low) |
| Pin 6 | VCC — Power Supply |
| Pin 7 | VSS — Ground |
| Pin 8 | HOLD — Hold (active low) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
M95040-DRMN3TP/K is suitable for 6 applications: Automotive Body Control Module, Industrial Sensor Calibration, Smart Metering, Consumer Electronics Configuration, Medical Device Parameter Storage, IoT Device Firmware Storage.
Automotive Body Control Module
The M95040-DRMN3TP/K is AEC-Q100 qualified, making it ideal for automotive body control modules. It stores configuration data such as lighting settings, window positions, and door lock parameters. The SPI interface allows fast read/write access, and the wide voltage range (1.8V to 5.5V) ensures compatibility with automotive power rails. The low standby current (2 µA) minimizes battery drain when the vehicle is off. In a typical BCM, the EEPROM is connected to the microcontroller's SPI bus, with the Write Protect pin tied to a GPIO for software-controlled write protection. The 5 ms write cycle time is acceptable for infrequent parameter updates. The SO-8N package fits on compact PCB layouts, and the -40°C to +85°C temperature range covers automotive operating conditions.
Recommended
Industrial Sensor Calibration
Industrial sensors often require calibration data to be stored in non-volatile memory. The M95040-DRMN3TP/K provides 4Kbit of storage, sufficient for calibration coefficients and sensor ID. The SPI interface enables high-speed data transfer up to 10 MHz, allowing quick calibration updates during manufacturing. The device operates from 1.8V to 5.5V, compatible with various sensor supply voltages. The write protection feature prevents accidental overwrites during operation. In a typical sensor module, the EEPROM is connected to a microcontroller or FPGA via SPI, with the Write Protect pin controlled by a GPIO. The 5 ms write cycle time is acceptable for calibration procedures. The SO-8N package is suitable for compact sensor housings, and the industrial temperature range (-40°C to +85°C) ensures reliable operation in harsh environments.
Recommended
Smart Metering
Smart meters require non-volatile memory to store consumption data, calibration constants, and configuration settings. The M95040-DRMN3TP/K offers 4Kbit of storage, which is adequate for these parameters. The SPI interface allows efficient communication with the meter's microcontroller, and the low standby current (2 µA) is crucial for battery-powered meters. The wide voltage range (1.8V to 5.5V) supports both 3.3V and 5V logic. The write protection feature ensures data integrity against accidental writes. In a smart meter, the EEPROM is typically connected to the main MCU via SPI, with the Write Protect pin tied to a GPIO. The 5 ms write cycle time is acceptable for periodic data logging. The SO-8N package is compact, and the industrial temperature range covers outdoor installation conditions.
Recommended
Consumer Electronics Configuration
In consumer electronics, the M95040-DRMN3TP/K stores configuration data such as device settings, user preferences, and calibration data. The SPI interface provides fast access, and the small SO-8N package is ideal for space-constrained designs like smartwatches, earbuds, and remote controls. The low standby current (2 µA) extends battery life in portable devices. The wide voltage range (1.8V to 5.5V) allows operation from a single lithium-ion cell (3.0V to 4.2V). The write protection feature prevents accidental data corruption. In a typical consumer device, the EEPROM is connected to the application processor via SPI, with the Write Protect pin controlled by a GPIO. The 5 ms write cycle time is acceptable for occasional settings changes. The -40°C to +85°C temperature range covers consumer operating environments.
Recommended
Medical Device Parameter Storage
Medical devices require reliable non-volatile memory for storing patient data, device settings, and calibration parameters. The M95040-DRMN3TP/K provides 4Kbit of storage, sufficient for these needs. The SPI interface allows secure and fast data transfer, and the low standby current (2 µA) is important for battery-powered devices like glucose monitors and hearing aids. The wide voltage range (1.8V to 5.5V) supports various battery chemistries. The write protection feature ensures data integrity, which is critical in medical applications. In a typical medical device, the EEPROM is connected to a microcontroller via SPI, with the Write Protect pin tied to a GPIO. The 5 ms write cycle time is acceptable for infrequent data updates. The SO-8N package is compact, and the industrial temperature range covers clinical environments.
Recommended
IoT Device Firmware Storage
IoT devices often need to store firmware updates, device certificates, and sensor calibration data. The M95040-DRMN3TP/K offers 4Kbit of non-volatile storage, which can hold small firmware patches or configuration data. The SPI interface enables fast data transfer, and the low standby current (2 µA) is crucial for battery-powered IoT nodes. The wide voltage range (1.8V to 5.5V) supports various power sources, including energy harvesting. The write protection feature prevents unauthorized writes. In a typical IoT device, the EEPROM is connected to a low-power MCU via SPI, with the Write Protect pin controlled by a GPIO. The 5 ms write cycle time is acceptable for occasional updates. The SO-8N package is suitable for compact PCB designs, and the industrial temperature range covers outdoor deployments.
Recommended
Recommended Products Summary
Engineering reference data for M95040-DRMN3TP/K — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M95040-DRMN3TP | 25AA040 | CAT25040 |
|---|---|---|---|---|
| Package | SO-8N | SO-8N | SO-8N | SO-8N |
| Brand | STMicroelectronics | STMicroelectronics | Microchip Technology | onsemi |
| Memory Size | 4 Kbit | 4 Kbit | 4 Kbit | 4 Kbit |
| Supply Voltage Range | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| Max Clock Frequency | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Write Cycle Time | 5 ms | 5 ms | 5 ms | 5 ms |
| Page Size | 16 bytes | 16 bytes | 16 bytes | 16 bytes |
| AEC-Q100 | Qualified | Not qualified | Not qualified | Not qualified |
Key Differentiators
- Automotive grade (AEC-Q100 qualified) (vs M95040-DRMN3TP)
- Wide supply voltage range (1.8V to 5.5V) (vs 25AA040)
- Low standby current (2 µA) (vs CAT25040)
Design Notes
Place a 0.1 µF ceramic capacitor close to the VCC pin and a 1 µF capacitor in parallel for bulk decoupling. The supply voltage should be stable and within the 1.8V to 5.5V range. Avoid voltage spikes above 5.5V, as they may damage the device.
Keep the SPI traces (S, C, D, Q) short and avoid routing them near high-speed digital lines to minimize crosstalk. Use ground planes to reduce noise. The SO-8N package has a thermal pad; ensure proper soldering for mechanical strength and thermal performance.
Ensure the Write Protect (W) pin is tied to VCC or controlled by a GPIO to prevent accidental writes. The HOLD pin should be tied to VCC if not used. During write cycles, do not issue new commands until the write cycle completes (5 ms). Also, verify SPI mode (0 or 3) matches the master's configuration.
Compliance Information
RoHS compliant per STMicroelectronics product page. AEC-Q100 qualified for automotive applications.
