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STMicroelectronics M24C08-WMN6P
- Part No.:
- M24C08-WMN6P
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C08-WMN6P.pdf
- Description:
- IC EEPROM 8KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,924
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Product details
Overview
M24C08-WMN6P from STMicroelectronics is an 8-Kbit I²C-compatible serial EEPROM organized as 1 K × 8 bits, operating from 2.5 V to 5.5 V supply and supporting 100 kHz / 400 kHz bus speeds. It features 16-byte page write capability, >4 million write cycles, and 200-year data retention at 55 °C. Used for configuration storage in industrial controllers, power supply monitors, and embedded sensor nodes where nonvolatile parameter persistence is required.
For engineers reviewing the M24C08-WMN6P datasheet, M24C08-WMN6P pinout, M24C08-WMN6P application, or M24C08-WMN6P equivalent, key selection considerations include I²C voltage compatibility (2.5–5.5 V), SO8N package footprint, WC/E2 pin configuration for write protection, and guaranteed endurance under extended temperature cycling.
Technical Context
The M24C08-WMN6P implements a standard I²C slave protocol with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment. Its block diagram includes HV generator + sequencer for EEPROM programming, page latches for burst writes, and SDA open-drain I/O with external pull-up requirement.
It supports three read modes - random, current address, and sequential - and two write modes - byte and page - with WC input enabling hardware-level memory array write protection. The device incorporates power-on-reset (POR) circuitry to prevent spurious writes during VCC ramp-up and operates across –40 °C to +85 °C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 bits), sufficient for firmware calibration tables or device ID storage |
| I²C speed | Up to 400 kHz fast-mode operation, enabling sub-10 ms full-page writes |
| Supply voltage | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting |
| Page size | 16 bytes - matches typical microcontroller register block sizes for efficient bulk updates |
| Write endurance | 4,000,000 cycles at 25 °C - supports daily reconfiguration over 10+ years in field-deployed equipment |
| Data retention | 200 years at 55 °C - ensures long-term reliability in unattended infrastructure monitoring systems |
| Operating temp | –40 °C to +85 °C - qualified for industrial automation and outdoor metering applications |
Pinout & Package
Package: SO8N (ECOPACK2), 150 mil width, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E2) | Chip enable input | Configures b3 of I²C device address (1010 E2 A9 A8 R/W); tied high/low to select among up to four devices on same bus |
| 2 (SDA) | Serial data I/O | Open-drain bidirectional line requiring external pull-up; shares bus with other I²C slaves |
| 3 (SCL) | Serial clock input | Master-generated clock; rising edge samples SDA, falling edge allows SDA transition |
| 4 (WC) | Write control input | Active-high hardware lock: when high, all write attempts return NACK and preserve memory contents |
| 5 (VSS) | Ground reference | Common return path for all signals and VCC decoupling capacitor (10–100 nF recommended) |
| 6 (NC) | No connect | Not bonded internally; must remain unconnected on PCB to avoid parasitic coupling |
| 7 (VCC) | Supply voltage | 2.5–5.5 V DC input; requires stable regulation and local decoupling per datasheet Section 2.6.1 |
| 8 (NC) | No connect | Not bonded internally; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all writes globally - prevents corruption during brown-out or firmware crash |
| Page write mode | 16-byte burst writes reduce I²C transaction overhead by 87% vs. individual byte writes |
| Enhanced ESD immunity | ±3000 V HBM rating - improves robustness in handling-sensitive industrial assembly environments |
| Power-on reset (POR) | Internal POR circuit blocks instruction execution until VCC stabilizes above threshold - eliminates startup glitches |
| ECOPACK2 packaging | SO8N meets RoHS and halogen-free requirements without compromising thermal or mechanical performance |
Applications
| Industrial PLC Configuration Storage | Smart Power Supply Calibration |
|---|---|
|
Use Scenario: Storing user-defined I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings across power cycles. Use Value: Enables field-reprogrammable behavior without firmware update; retains values for >200 years at 55 °C. |
Use Scenario: Saving trim values for voltage/current feedback loops and safety thresholds in digitally controlled AC/DC supplies. IC Role / Device Role / Timing Role: Parameter vault accessed during power-up initialization before closed-loop regulation begins. Use Value: Supports 4M write cycles - accommodates daily recalibration during production test and field maintenance. |
| Embedded Sensor Node Identity | Medical Device Usage Logs |
|
Use Scenario: Storing unique MAC address, sensor calibration coefficients, and manufacturing date in wireless environmental sensors. IC Role / Device Role / Timing Role: Factory-programmed identity store read once at boot and cached in RAM. Use Value: SO8N package fits compact sensor modules; 2.5–5.5 V range interfaces directly with 3.3 V MCU I²C peripherals. |
Use Scenario: Recording cumulative operational hours, error counters, and last-fault timestamps in portable diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant event logger updated only during safe shutdown sequences. Use Value: WC pin hardwired low during normal operation but pulled high during firmware updates to prevent accidental overwrite. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C08D-SSHM-T (Microchip) | Same 8-Kbit I²C EEPROM, but rated for 1.7–5.5 V and offers TSSOP8/SO8N packages; no WC pin - write protection via software lock bits only | Lacks hardware write disable; requires firmware coordination to prevent concurrent access corruption | Select when board space permits TSSOP8 and software-controlled protection suffices |
| BR24G08NUX-10 (ROHM) | 8-Kbit I²C EEPROM with 1.6–5.5 V range and built-in write protect; uses different device address (1010000x) and lacks E2 pin for multi-device addressing | Fixed I²C address limits bus scalability; no E2 pin means only one BR24G08NUX can occupy a given bus segment | Select when single-device topology is acceptable and ultra-low-voltage operation down to 1.6 V is required |
Compared with AT24C08D-SSHM-T and BR24G08NUX-10, the M24C08-WMN6P provides hardware-level write disable via WC pin and flexible multi-device addressing via E2, making it preferable for systems requiring robust concurrent-write prevention and bus scalability.
Availability
M24C08-WMN6P is available at Aetrix Electronics and suitable for industrial PLCs, smart power supplies, embedded sensor nodes, and medical device usage logging requiring stable component supply and long-lifecycle support.
Supply support for M24C08-WMN6P 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 industrial, automotive, and consumer markets.
The M24C08 belongs to ST's serial EEPROM product line, engineered for reliable nonvolatile data storage in resource-constrained embedded systems where I²C interface simplicity and long-term data integrity are critical.
FAQ
What is the function of the WC pin on M24C08-WMN6P?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations to the entire memory array when driven high. When WC is low or floating, writes are enabled. This prevents accidental overwrites during power transitions or firmware errors, and is distinct from software-based write protection used in alternatives like AT24C08D.
Can M24C08-WMN6P operate at 3.3 V and communicate with a 100 kHz I²C master?
Yes - the M24C08-WMN6P supports 2.5 V to 5.5 V supply and is fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications. At 3.3 V, it meets all timing parameters including tBUF, tHD;STA, and tSU;STA per DS9362 Rev 7, Table 15.
Does the SO8N package of M24C08-WMN6P include exposed pads or thermal vias?
No - the SO8N (MN) package is a standard plastic small-outline integrated circuit with gull-wing leads and no exposed thermal pad. Thermal dissipation relies on PCB copper area connected to pins 5 (VSS) and 7 (VCC), with recommended 10–100 nF decoupling placed within 5 mm of those pins.
How does the E2 pin affect I²C addressing on M24C08-WMN6P?
The E2 pin sets bit b3 of the 7-bit I²C device address (1010 E2 A9 A8). With E2 tied high or low, up to four M24C08-WMN6P devices can share one I²C bus using addresses 0xA0–0xA6. In SO8N, E2 is accessible at pin 1; unused in DFN5/WLCSP variants where it defaults to logic 0.
M24C08-WMN6P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 8Kbit
- Memory Organization:
- 1K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M24C08-WMN6P FAQ
1.How can I place an order for M24C08-WMN6P through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C08-WMN6P 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 M24C08-WMN6P reliable?
The price and inventory of M24C08-WMN6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C08-WMN6P is usually 5 days.
3.What payment methods are accepted for M24C08-WMN6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C08-WMN6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C08-WMN6P?
M24C08-WMN6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C08-WMN6P 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 M24C08-WMN6P?
For technical support, including M24C08-WMN6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C08-WMN6P requirements.
6.How does Aetrix verify that M24C08-WMN6P is sourced from the original manufacturer or authorized distributors?
All M24C08-WMN6P 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 M24C08-WMN6P meets industry standards.
7.What is the process for return or replacement of M24C08-WMN6P?
All M24C08-WMN6P units undergo pre-shipment inspection (PSI). If there is an issue with M24C08-WMN6P, 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 M24C08-WMN6P part is unused and in its original packaging.
Return procedure for M24C08-WMN6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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