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STMicroelectronics M24C04-WMN6TP
- Part No.:
- M24C04-WMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C04-WMN6TP.pdf
- Description:
- IC EEPROM 4KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:30,078
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Product details
Overview
M24C04-WMN6TP from STMicroelectronics is a 4-Kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating at up to 400 kHz clock frequency with 2.5 V to 5.5 V supply voltage, -40 °C to +85 °C temperature range, and 16-byte page write capability. It serves as nonvolatile configuration storage in microcontroller-based systems requiring reliable parameter retention across power cycles.
For engineers reviewing the M24C04-WMN6TP datasheet, M24C04-WMN6TP pinout, M24C04-WMN6TP application, or M24C04-WMN6TP equivalent, key selection criteria include I²C bus timing compliance, write-protection via WC pin, SO8N (ECOPACK2) package compatibility, 4 million write endurance, and guaranteed 200-year data retention at 55 °C.
Technical Context
The M24C04-WMN6TP implements a standard I²C slave interface with start/stop detection, ACK/NACK handshaking, and 7-bit device addressing (1010xxxA), where E1/E2 pins configure the two MSBs of the address. Its internal architecture includes a page latch, X/Y decoders, HV generator for write operations, and automatic address incrementing during sequential reads.
It supports three read modes - random, current address, and sequential - and two write modes - byte and page - with write protection enforced by the active-high WC pin. The device features an integrated power-on reset (POR) circuit that prevents spurious writes during power ramp-up and ensures stable operation only after VCC reaches the internal threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8 bits) - sufficient for storing calibration data, device IDs, or small firmware patches in space-constrained designs. |
| I²C clock frequency | Up to 400 kHz - enables fast configuration loading without requiring high-speed MCU peripherals or additional timing logic. |
| Supply voltage range | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V logic domains, eliminating need for level shifters in mixed-voltage systems. |
| Write cycle time | ≤ 5 ms (byte or page) - deterministic latency allows precise timing budgeting in real-time control loops or boot sequences. |
| Data retention | 200 years at 55 °C - ensures long-term reliability in industrial equipment with infrequent field maintenance. |
| Endurance | 4 million write cycles at 25 °C - supports frequent logging or dynamic parameter updates over product lifetime. |
| Operating temperature | -40 °C to +85 °C - qualified for use in automotive body electronics, industrial PLCs, and outdoor IoT gateways. |
Pinout & Package
Package: SO8N (ECOPACK2), 150 mil width, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E2 | Chip enable (MSB of device address) | Hardwired to VCC or VSS to set b3 of 7-bit I²C address; floating defaults to logic 0 - determines multi-device bus topology. |
| E1 | Chip enable (LSB of device address) | Hardwired to VCC or VSS to set b2 of 7-bit I²C address; floating defaults to logic 0 - enables up to four M24C04 devices on same bus. |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up; supports wired-AND with other I²C slaves on shared bus. |
| VCC | Supply voltage | 2.5–5.5 V DC input; requires local 10–100 nF decoupling capacitor near pin for noise immunity during write cycles. |
| SCL | Serial clock input | Master-generated clock signal; rising edge samples SDA, falling edge permits SDA transitions - defines communication timing. |
| WC | Write control | Active-high hardware lock: when high, disables all write operations (byte/page) while still acknowledging device select and address bytes. |
| VSS | Ground reference | Common return path for all signals and VCC; must be low-impedance connection to avoid noise-induced ACK failures. |
| NC | No connect | Pin 6 in SO8N is unconnected - no routing or termination required; simplifies PCB layout and reduces risk of accidental shorts. |
Key Features
| Feature | Design Value |
|---|---|
| Page write (16-byte burst) | Reduces I²C transaction overhead by 87% vs. individual byte writes - critical for efficient firmware update staging. |
| Hardware write protect (WC pin) | Prevents accidental overwrites during power transients or firmware bugs without software intervention - enhances system robustness. |
| Enhanced ESD/latch-up protection | Withstands ±3000 V HBM ESD - eliminates need for external TVS diodes in consumer-grade PCBs with exposed connectors. |
| Automatic address roll-over | Sequential reads wrap from address 1FFh to 00h - enables circular buffer emulation using single I²C command sequence. |
| Power-on reset (POR) circuit | Blocks instruction execution until VCC stabilizes above internal threshold - guarantees safe initialization without external reset IC. |
Applications
| Industrial Sensor Node | Smart Meter Calibration Storage |
|---|---|
|
Use Scenario: Storing sensor offset/gain coefficients and environmental compensation tables in battery-powered wireless nodes. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during boot and periodic recalibration routines via I²C. Use Value: Enables field-upgradable calibration without firmware reflash; 200-year retention ensures accuracy over full product lifecycle. |
Use Scenario: Holding metrology calibration constants and tariff schedule parameters in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for revenue-critical data, protected by WC pin during normal operation. Use Value: Meets ANSI C12.19 Annex A requirements for data integrity; 4M write cycles support daily billing log updates for >10 years. |
| Automotive Body Control Module | Medical Device Configuration |
|
Use Scenario: Saving user preferences (mirror position, seat settings) and fault history logs in 12 V vehicle networks. IC Role / Device Role / Timing Role: I²C slave memory interfaced to 3.3 V microcontroller; operates across -40 °C to +85 °C ambient range. Use Value: Qualified per AEC-Q100 Grade 3; SO8N package withstands automotive thermal cycling; WC pin prevents corruption during load dump events. |
Use Scenario: Storing FDA-required device serial numbers, calibration timestamps, and usage counters in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure boot-time configuration loader ensuring traceability and regulatory compliance before clinical operation. Use Value: 2.5–5.5 V supply range matches medical-grade DC-DC outputs; 200-year retention satisfies ISO 13485 long-term recordkeeping mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04D-SSHM-T (Microchip) | Same 4-Kbit capacity, 1.7–5.5 V supply, but uses 1 MHz I²C mode and lacks WC pin - relies on software write protection. | Requires firmware-level lock management; unsuitable where hardware-level write disable is mandated (e.g., safety-critical logs). | Select when higher speed (1 MHz) is needed and WC functionality is not required; verify I²C timing margins with target MCU. |
| BR24G04FJ-3GE2 (ROHM) | 4-Kbit, 1.7–5.5 V, includes built-in WC function and same SO8N package, but rated for -40 °C to +105 °C and offers 10M write endurance. | Supports extended temperature environments (e.g., under-hood automotive); higher endurance suits high-frequency logging. | Choose for extended temp or higher endurance needs; pinout and I²C protocol are identical - drop-in replacement with enhanced specs. |
Compared with AT24C04D-SSHM-T and BR24G04FJ-3GE2, the M24C04-WMN6TP provides optimal balance of industrial temperature rating, hardware write protection, and proven 200-year data retention - making it preferred for cost-sensitive, long-lifecycle embedded systems where reliability trumps raw speed or extreme temp range.
Availability
M24C04-WMN6TP is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter calibration storage, automotive body control modules, and medical device configuration requiring stable component supply across multi-year production programs.
Supply support for M24C04-WMN6TP 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 industrial, automotive, and consumer markets.
The M24C04-W series belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in resource-constrained embedded systems where data integrity and long-term reliability are critical.
FAQ
What is the function of the WC pin on M24C04-WMN6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations - including byte and page writes - when driven high. It does not affect read operations. When WC is high, the device acknowledges device select and address bytes but returns NACK for data bytes, preventing unintended memory modification during power-up, brown-out, or firmware faults.
Can M24C04-WMN6TP operate at 1.8 V supply?
No. The M24C04-WMN6TP variant is specified for 2.5 V to 5.5 V operation only. For 1.8 V compatibility, ST offers the M24C04-R variant (1.8–5.5 V), which shares identical pinout and functionality but differs in voltage rating and internal design - they are not interchangeable without verifying board-level voltage compliance.
How many devices can share the same I²C bus with M24C04-WMN6TP?
Up to four M24C04-WMN6TP devices can coexist on one I²C bus using the E1 and E2 pins to configure unique 7-bit addresses (1010xxxA). Each combination of E1/E2 tied to VCC or VSS sets bits b3/b2, yielding addresses 0xA0, 0xA2, 0xA4, and 0xA6 - enabling multi-device configuration without address conflicts.
Does M24C04-WMN6TP support sequential read across page boundaries?
Yes. During sequential read, the internal address counter automatically increments and rolls over from address 1FFh back to 00h, allowing continuous streaming across page boundaries without host intervention. This behavior is guaranteed for SO8N-packaged devices and enables efficient bulk data retrieval with minimal I²C traffic.
M24C04-WMN6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 4Kbit
- Memory Organization:
- 512 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
M24C04-WMN6TP FAQ
1.How can I place an order for M24C04-WMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C04-WMN6TP 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 M24C04-WMN6TP reliable?
The price and inventory of M24C04-WMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C04-WMN6TP is usually 5 days.
3.What payment methods are accepted for M24C04-WMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C04-WMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C04-WMN6TP?
M24C04-WMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C04-WMN6TP 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 M24C04-WMN6TP?
For technical support, including M24C04-WMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C04-WMN6TP requirements.
6.How does Aetrix verify that M24C04-WMN6TP is sourced from the original manufacturer or authorized distributors?
All M24C04-WMN6TP 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 M24C04-WMN6TP meets industry standards.
7.What is the process for return or replacement of M24C04-WMN6TP?
All M24C04-WMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C04-WMN6TP, 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 M24C04-WMN6TP part is unused and in its original packaging.
Return procedure for M24C04-WMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M24C04-WMN6TP Tags
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