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STMicroelectronics M24C04-WDW6TP
- Part No.:
- M24C04-WDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C04-WDW6TP.pdf
- Description:
- IC EEPROM 4KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:25,945
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Product details
Overview
M24C04-WDW6TP 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 byte- or page-level updates without external high-voltage programming.
For engineers reviewing the M24C04-WDW6TP datasheet, M24C04-WDW6TP pinout, M24C04-WDW6TP application, or M24C04-WDW6TP equivalent, key selection considerations include I²C address flexibility via E1/E2 pins, hardware write protection via WC input, SO8N (ECOPACK2) package compatibility, and guaranteed 4 million write cycles with 200-year data retention at 55 °C.
Technical Context
The M24C04-WDW6TP implements a standard I²C slave interface with start/stop detection, ACK/NACK handshaking, and 7-bit device addressing (1010xxxA8RW), where E1 and E2 configure bits b3–b2 of the address. It supports random and sequential read modes, byte write (≤5 ms), and page write (≤5 ms) with automatic address increment and page-boundary roll-over.
Internally, it integrates a high-voltage generator for EEPROM cell programming, page latches for burst write buffering, and a power-on-reset (POR) circuit that prevents spurious writes during power-up. The WC pin provides hardware-level memory array protection, disabling all write operations when driven high-regardless of address or data content.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8 bits), sufficient for firmware calibration tables or device ID storage in compact embedded nodes. |
| I²C speed | Up to 400 kHz, enabling fast configuration loading without CPU polling overhead in real-time control loops. |
| Supply voltage | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Write endurance | 4 million write cycles at 25 °C - supports daily reconfiguration over 10+ years in industrial logging applications. |
| Data retention | 200 years at 55 °C - ensures long-term reliability in unattended equipment such as smart meters or remote sensors. |
| Page size | 16 bytes - optimizes firmware update efficiency by reducing I²C transaction count per block write. |
| Operating temp | -40 °C to +85 °C - validated for automotive body electronics and industrial PLC I/O modules. |
Pinout & Package
Package: SO8N (ECOPACK2), 150 mil width, RoHS-compliant and halogen-free. Pin 1 identified by notch or dot marking; pin 1 corner located at top-left when marking side faces up and notch points upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E2) | Chip enable bit 2 | Configures b3 of 7-bit I²C address; tied to VCC/VSS to set fixed device address; floating = logic 0. |
| 2 (E1) | Chip enable bit 1 | Configures b2 of 7-bit I²C address; same biasing rules as E2; enables up to four devices on same bus. |
| 3 (SDA) | Serial data I/O | Open-drain bidirectional line; requires external pull-up; supports wired-AND with other I²C slaves. |
| 4 (VSS) | Ground reference | Common return path for all signals and VCC decoupling; must be low-impedance for noise immunity. |
| 5 (SCL) | Serial clock input | Master-generated clock; rising edge samples SDA; falling edge allows SDA transition per I²C spec. |
| 6 (WC) | Write control input | Active-high hardware lock: disables all write operations (byte/page) when driven high; no software override. |
| 7 (VCC) | Supply voltage | 2.5–5.5 V DC input; requires local 10–100 nF ceramic decoupling capacitor near pins 4 and 7. |
| 8 (E1) | Chip enable bit 1 (duplicate) | Not used in SO8N; pin 8 is E1 - matches datasheet Figure 2 pinout; no NC designation in this package. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables entire memory array from writes when asserted high - prevents accidental corruption during firmware updates. |
| Page write mode | 16-byte burst writes reduce I²C bus occupancy by >80% vs. byte-by-byte writes for configuration blocks. |
| Enhanced ESD/latch-up | 3 kV HBM ESD rating and robust latch-up immunity ensure reliability in assembly and field-deployed environments. |
| Power-on reset (POR) | Internal POR circuit blocks instruction execution until VCC stabilizes above threshold - eliminates boot-time glitches. |
| Address configurability | E1/E2 pins allow four unique I²C addresses (101000xx to 101011xx) - simplifies multi-device topology design. |
Applications
| Industrial Sensor Node | Automotive Body Control Module |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets and linearization coefficients in a wireless temperature/humidity node. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at startup and after field recalibration; I²C interface synchronized to MCU's system clock domain. Use Value: Enables field-updatable calibration without firmware reflashing; 4M write cycles support monthly recalibration over 10+ years. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles across ignition cycles. IC Role / Device Role / Timing Role: Dedicated EEPROM for user preference storage; accessed only during initialization or setting changes via LIN/CAN gateway MCU. Use Value: Guarantees data persistence through battery disconnects; -40 °C to +85 °C rating ensures operation in trunk-mounted ECUs. |
| Smart Energy Meter | Medical Infusion Pump |
|
Use Scenario: Logging tamper events, firmware version history, and tariff schedule changes in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure event log storage with hardware write lock (WC pin tied high after initial programming). Use Value: Prevents unauthorized runtime modification of billing-critical parameters; 200-year retention meets regulatory archival requirements. |
Use Scenario: Storing drug library parameters, dose limits, and operator audit trails in Class II medical infusion devices. IC Role / Device Role / Timing Role: Safety-critical configuration storage; write operations gated by dual MCU verification before WC pin activation. Use Value: Supports IEC 62304 traceability requirements; 4M endurance accommodates full lifecycle clinical usage logs. |
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 dedicated WC pin - write protect implemented via software address locking. | Requires firmware-level protection logic; unsuitable where hardware-level lockout is mandated (e.g., UL/IEC 62304 safety-critical paths). | Select when higher-speed I²C access is needed and hardware write disable is not required. |
| BR24G04FJ-3GE2 (ROHM) | 4-Kbit, 1.7–5.5 V, includes built-in write protect register (WP bit) and 1 MHz I²C, but no external WC pin; smaller UFDFPN5 footprint. | Software-configurable protection reduces pin count but increases MCU dependency; not drop-in replaceable due to different pinout and lack of E1/E2 address pins. | Select for space-constrained designs where address flexibility is secondary to board area reduction. |
Compared with AT24C04D-SSHM-T and BR24G04FJ-3GE2, the M24C04-WDW6TP uniquely combines hardware WC pin lockout, E1/E2 address configuration, and SO8N package compatibility - making it optimal for industrial and automotive designs requiring deterministic, pin-level write security and multi-device bus topology.
Availability
M24C04-WDW6TP is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, smart energy meters, and medical infusion pumps requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for M24C04-WDW6TP 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 M24C04-WDW6TP belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in harsh environments where reliability, long data retention, and hardware-level write protection are mandatory.
FAQ
What is the function of the WC pin on M24C04-WDW6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations-including byte write, page write, and address pointer modification-when driven high. Unlike software-based write protection, this function operates independently of I²C commands and cannot be overridden by bus traffic, ensuring deterministic safeguarding of stored data.
Can M24C04-WDW6TP operate at 1.8 V supply voltage?
No. The M24C04-WDW6TP variant is rated for 2.5 V to 5.5 V supply voltage only. For 1.8 V operation, ST offers the M24C04-R series (e.g., M24C04-RDW6TP), which specifies 1.8 V minimum VCC and shares identical pinout and functionality except for the extended low-voltage operating range.
How does the E1/E2 pin configuration affect I²C addressing?
E1 and E2 set bits b2 and b3 of the 7-bit I²C device address (base 1010xxxA8). With both pins tied to VSS, the address becomes 101000xx; tying E2 to VCC and E1 to VSS yields 101001xx - enabling up to four unique addresses on the same I²C bus without external address jumpers or resistors.
Is the SO8N package of M24C04-WDW6TP lead-free and RoHS-compliant?
Yes. The SO8N package used in M24C04-WDW6TP is ECOPACK2-certified: fully RoHS-compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21, with lead-free matte tin terminations and compliant with JEDEC J-STD-020 reflow profiles for Pb-free assembly.
M24C04-WDW6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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-TSSOP
M24C04-WDW6TP FAQ
1.How can I place an order for M24C04-WDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C04-WDW6TP 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-WDW6TP reliable?
The price and inventory of M24C04-WDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C04-WDW6TP is usually 5 days.
3.What payment methods are accepted for M24C04-WDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C04-WDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C04-WDW6TP?
M24C04-WDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C04-WDW6TP 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-WDW6TP?
For technical support, including M24C04-WDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C04-WDW6TP requirements.
6.How does Aetrix verify that M24C04-WDW6TP is sourced from the original manufacturer or authorized distributors?
All M24C04-WDW6TP 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-WDW6TP meets industry standards.
7.What is the process for return or replacement of M24C04-WDW6TP?
All M24C04-WDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C04-WDW6TP, 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-WDW6TP part is unused and in its original packaging.
Return procedure for M24C04-WDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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