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STMicroelectronics M24C08-WDW6TP
- Part No.:
- M24C08-WDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M24C08-WDW6TP.pdf
- Description:
- IC EEPROM 8KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:25,207
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Product details
Overview
M24C08-WDW6TP 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, 5 ms max write time, -40 °C to +85 °C operation, and hardware write protection via WC pin - deployed in industrial control panels for nonvolatile parameter storage and calibration data retention.
For engineers reviewing the M24C08-WDW6TP datasheet, M24C08-WDW6TP pinout, M24C08-WDW6TP application, or M24C08-WDW6TP equivalent, this page delivers verified package mapping (TSSOP8-DW), terminal-level I²C interface behavior, memory architecture constraints (page boundaries, roll-over rules), and real-world write-protection logic under WC high/low/floating conditions.
Technical Context
The M24C08-WDW6TP implements a slave-only I²C interface 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 output requiring external pull-up.
It supports three read modes - random, current-address, and sequential - with defined roll-over behavior (except in DFN5/WLCSP packages). Write control (WC) disables all writes when high; when floating or low, full array access is enabled. Chip enable (E2) sets b3 of device address and is unconnected in TSSOP8-DW per datasheet Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8), enabling storage of 1 KB firmware config or sensor calibration tables |
| I²C speed | Up to 400 kHz fast-mode, permitting ~50 µs per byte transfer in standard systems |
| Page size | 16 bytes - maximum contiguous write without internal address wrap; critical for burst logging efficiency |
| Write time | ≤5 ms per byte or page - defines minimum inter-write interval and polling timeout design |
| Voltage range | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V microcontroller I/O domains without level shifters |
| Data retention | 200 years at 55 °C - ensures long-term reliability in sealed industrial enclosures |
| Endurance | 4 million write cycles at 25 °C - supports daily reconfiguration over >10-year product lifetime |
Pinout & Package
TSSOP8-DW (169 mil width, ECOPACK2-compliant) package with exposed pad not electrically connected. Pin 1 marked by notch or dot; pin numbering follows standard counter-clockwise convention from marking corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E2) | Chip enable input | Not connected in TSSOP8-DW per DS9362 Fig.2; device address b3 fixed to 0 - eliminates external biasing requirement |
| 2 (SDA) | Serial data I/O | Open-drain bidirectional line; requires external pull-up (typically 2.2–10 kΩ) to VCC for bus arbitration |
| 3 (SCL) | Serial clock input | Master-generated clock; rise/fall time ≤50 ns required for 400 kHz compliance |
| 4 (WC) | Write control input | Active-high write protect: drives high → disables all writes; floating/low → enables full array access |
| 5 (VSS) | Ground reference | Return path for all signals; must be low-impedance and decoupled near VCC pin |
| 6 (NC) | No connect | Unbonded die pad - must remain unconnected on PCB to avoid parasitic coupling |
| 7 (VCC) | Supply voltage | 2.5–5.5 V DC; requires local 10–100 nF ceramic decoupling capacitor between pins 5 and 7 |
| 8 (NC) | No connect | Unbonded die pad - no routing or stitching allowed |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables entire memory array when driven high - prevents accidental firmware corruption during power transients |
| Page write optimization | 16-byte page buffer allows single I²C transaction to store one sensor frame or configuration block, reducing bus overhead by 15× vs byte writes |
| Robust I²C protocol handling | Start/stop detection, ACK/NACK generation, and address auto-increment eliminate need for host-side address management logic |
| Extended reliability | 4M write cycles + 200-year data retention validated per JEDEC JESD22-A117 - suitable for medical and infrastructure deployments |
| ECOPACK2 compliance | RoHS-compliant and halogen-free packaging meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data Retention |
|---|---|
|
Use Scenario: Storing user-defined I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter register accessed during boot and runtime via I²C; WC pin tied low for field updates. Use Value: Enables zero-downtime configuration changes without firmware reflashing; 4M endurance supports >10 years of daily recalibration. |
Use Scenario: Holding metrology calibration coefficients and tariff tables in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for certified calibration data; WC pin held high after factory programming. Use Value: Prevents unauthorized modification of billing parameters; 200-year retention ensures accuracy across meter lifetime without battery backup. |
| Medical Device Settings Backup | Automotive Body Control Module NVM |
|
Use Scenario: Saving patient-specific therapy parameters and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Fail-safe configuration store accessed during power-up and error recovery; operates across -40 °C to +85 °C ambient. Use Value: Guarantees treatment continuity after brownouts; 2.5 V min VCC supports operation during Li-ion battery sag below 3.0 V. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive BCMs. IC Role / Device Role / Timing Role: Low-power I²C slave with fast 400 kHz writes during ignition-on initialization sequence. Use Value: Enables <500 ms personalization load time; TSSOP8-DW footprint fits tight space constraints in junction boxes. |
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 1.7–5.5 V supply and no WC pin - write protection implemented via software lock bits only | Lacks hardware-level write disable; unsuitable where physical tamper resistance is required (e.g., utility meters) | Select when cost sensitivity outweighs need for hardware write lock; verify lock-bit robustness against voltage glitch attacks |
| BR24G08NUX-5TR (ROHM) | 8-Kbit I²C EEPROM with 1.6–5.5 V range and built-in WC pin, but only 1 million write cycles and 100-year retention at 85 °C | Lower endurance and retention limit performance in high-cycle industrial logging or long-life infrastructure | Acceptable for consumer-grade applications with <5-year lifecycle; avoid in medical or grid infrastructure designs |
Compared with AT24C08D-SSHM-T and BR24G08NUX-5TR, the M24C08-WDW6TP provides superior hardware-based write security, higher endurance (4M vs 1M cycles), and longer data retention (200 vs 100 years), making it optimal for safety-critical and long-lifecycle deployments where firmware integrity and parameter longevity are non-negotiable.
Availability
M24C08-WDW6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart meters, medical infusion pumps, and automotive body control modules requiring stable component supply, RoHS-compliant packaging, and guaranteed 200-year data retention.
Supply support for M24C08-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 products for industrial, automotive, and consumer markets.
The M24C08-WDW6TP belongs to ST's serial EEPROM product line, engineered specifically for reliable, low-power, I²C-based nonvolatile storage in space-constrained and thermally demanding environments.
FAQ
What is the function of the WC pin on M24C08-WDW6TP?
The WC (Write Control) pin is an active-high hardware write protect input. When driven high, it disables all write operations to the entire 8-Kbit memory array - preventing accidental or malicious modification. When left floating or pulled low, full write access is enabled. This pin is physically present and functional in the TSSOP8-DW package per DS9362 Figure 2.
Does M24C08-WDW6TP support 400 kHz I²C communication?
Yes, the M24C08-WDW6TP fully supports I²C fast-mode operation up to 400 kHz, as specified in Table 6 of DS9362 Rev 7. It meets AC timing requirements including SCL rise/fall time ≤50 ns and bus capacitance ≤100 pF. No external speed-limiting components are needed for compliant 400 kHz operation.
Is the E2 pin connected in the TSSOP8-DW package?
No - the E2 pin (Pin 1) is not connected in the M24C08-WDW6TP TSSOP8-DW package, as confirmed in Figure 2 of DS9362 Rev 7. This fixes the device select code b3 bit to 0, simplifying I²C address decoding and eliminating the need for external pull-up/down resistors on that pin.
How does page write work, and what happens if more than 16 bytes are sent?
Page write allows up to 16 consecutive bytes to be written in one I²C transaction, provided they reside within the same 16-byte page boundary (A9–A4 unchanged). If more than 16 bytes are sent, the address counter rolls over to the start of the same page - i.e., bytes beyond the 16th overwrite from address 0x00 within that page. This behavior is deterministic and documented in Section 5.1.2 of DS9362.
M24C08-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:
- Not 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-TSSOP
M24C08-WDW6TP FAQ
1.How can I place an order for M24C08-WDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C08-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 M24C08-WDW6TP reliable?
The price and inventory of M24C08-WDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C08-WDW6TP is usually 5 days.
3.What payment methods are accepted for M24C08-WDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C08-WDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C08-WDW6TP?
M24C08-WDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C08-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 M24C08-WDW6TP?
For technical support, including M24C08-WDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C08-WDW6TP requirements.
6.How does Aetrix verify that M24C08-WDW6TP is sourced from the original manufacturer or authorized distributors?
All M24C08-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 M24C08-WDW6TP meets industry standards.
7.What is the process for return or replacement of M24C08-WDW6TP?
All M24C08-WDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C08-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 M24C08-WDW6TP part is unused and in its original packaging.
Return procedure for M24C08-WDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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