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STMicroelectronics M24C64-FMC6TG
- Part No.:
- M24C64-FMC6TG
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
M24C64-FMC6TG.pdf
- Description:
- IC EEPROM 64KBIT I2C 8UFDFPN
- Quantity:
- Payment:
- Shipping:
Inventory:9,459
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Product details
Overview
M24C64-FMC6TG from STMicroelectronics is a 64-Kbit I²C-compatible EEPROM organized as 8 K × 8 bits, operating from 1.7 V to 5.5 V over –40 °C to +85 °C, supporting 1 MHz / 400 kHz / 100 kHz I²C bus modes, with 32-byte page write capability and hardware write protection via WC pin - used for nonvolatile parameter storage in industrial sensor nodes and embedded control modules.
For engineers reviewing the M24C64-FMC6TG datasheet, M24C64-FMC6TG pinout, M24C64-FMC6TG application, or M24C64-FMC6TG equivalent, key selection considerations include supply voltage range (1.7–5.5 V), I²C speed mode compatibility, page write timing (≤5 ms), WC-controlled full-array write lock, and WLCSP-5 bump package footprint with defined SDA/SCL/WC/VCC/VSS bump mapping.
Technical Context
The M24C64-FMC6TG implements a standard I²C slave interface with start/stop detection, 7-bit device addressing (with E2/E1/E0 chip enable inputs internally tied to 001 in WLCSP-5), and ACK/NACK handshaking. It uses an internal HV generator and sequencer for EEPROM cell programming, with ECC logic (process-dependent) applied per 4-byte group to correct single-bit read errors.
Write operations are gated by the WC pin: high = full-array write inhibit; low or floating = write enabled. Page writes are limited to 32 bytes within the same memory page (A15–A5 identical), with automatic rollover on overflow. The device includes power-on reset (POR) and supports random, current-address, and sequential read modes without WC dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8 Kbyte), organized as 8K × 8 bits - sufficient for firmware calibration tables or device configuration profiles. |
| I²C speed modes | 1 MHz, 400 kHz, and 100 kHz - enables interoperability with legacy and high-speed microcontrollers without clock stretching. |
| Supply voltage range | 1.7 V to 5.5 V (–40 °C to +85 °C) - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains. |
| Write time | ≤5 ms for byte or page write - allows deterministic timeout handling in real-time firmware without polling overhead. |
| Endurance | 4 million write cycles - ensures long-term reliability in field-updatable systems with frequent parameter logging. |
| Data retention | 200 years at +25 °C - guarantees integrity of stored calibration or serial data across product lifecycle. |
| ESD/Latch-up | Enhanced protection per ECOPACK2 - meets industrial robustness requirements for unshielded board-level deployment. |
Pinout & Package
Package: WLCSP-5 (5-bump ultra-thin chip-scale package, ECOPACK2 compliant, marking side top view, bump side bottom view). Dimensions: not specified in source; compatible with fine-pitch automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up; shares bus with other I²C devices. |
| SCL | Serial clock input | Master-generated clock; sampled on rising edge for data input; controls all timing-critical transfers. |
| WC | Write control input | Active-high hardware lock: disables all write operations to entire memory array when driven high. |
| VCC | Supply voltage | 1.7–5.5 V DC input; decoupling capacitor (10–100 nF) required near package pins for stable operation. |
| VSS | Ground reference | Common return path for all signals and VCC; must be low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin enables system-level lock of full memory array - eliminates risk of accidental overwrite during firmware updates or brown-out events. |
| Multi-voltage operation | 1.7 V minimum supply enables direct integration with ultra-low-power MCUs (e.g., STM32L series) without level-shifting. |
| Page write efficiency | 32-byte page buffer reduces I²C transaction count by up to 32× vs. byte writes - critical for latency-sensitive configuration loading. |
| Industrial temperature range | –40 °C to +85 °C operation with guaranteed 1.7–5.5 V functionality - validated for use in automotive body controllers and industrial PLCs. |
| ECOPACK2 compliance | RoHS-compliant and halogen-free packaging - satisfies environmental requirements for global OEM production and export. |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables for analog sensor front-ends. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed at power-up and during self-test sequences. Use Value: Enables one-time calibration in production and field recalibration without firmware update; 200-year retention ensures accuracy over meter lifetime. |
Use Scenario: Holding tariff schedules, billing history metadata, and communication module credentials in utility-grade electricity meters. IC Role / Device Role / Timing Role: Secure, write-protected configuration store accessed via I²C during boot and secure firmware updates. Use Value: WC pin prevents tampering with billing parameters; 4M-cycle endurance supports daily log writes for >10 years. |
| Automotive Body Control Module | Medical Device Usage Logging |
|
Use Scenario: Recording seat position memory, mirror presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 1.8 V MCU I²C peripheral. Use Value: 1.7 V operation ensures reliable write during cold-cranking (battery dip to ~1.9 V); SO8N/TSSOP8 variants support reflow-soldered automotive PCBs. |
Use Scenario: Archiving usage timestamps, operator IDs, and diagnostic event logs in portable infusion pumps and ventilators. IC Role / Device Role / Timing Role: Tamper-resistant audit trail storage with hardware write lock activated post-configuration. Use Value: WC-driven full-array lock prevents unauthorized log modification; ECC improves read reliability in EMI-prone clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | Same 64 Kbit capacity, 1.7–5.5 V, but only supports up to 400 kHz I²C; no WC pin - uses software write protect. | Lacks hardware-level write lock; requires firmware coordination to prevent concurrent writes. | Select when cost sensitivity outweighs need for hardware write disable; verify I²C clock tolerance in host system. |
| BR24G64FJ-WE2 (ROHM) | 64 Kbit, 1.7–5.5 V, 1 MHz I²C, includes WC pin, but rated only to +105 °C (vs. +85 °C for M24C64-FMC6TG). | Better high-temp suitability for under-hood automotive use, but lacks ST's ECC option in K-process variants. | Prefer for extended temperature deployments where ECC is not required; confirm WLCSP-5 mechanical compatibility. |
Compared with AT24C64D-SSHM-T and BR24G64FJ-WE2, the M24C64-FMC6TG uniquely combines 1 MHz I²C, hardware WC lock, industrial –40 °C/+85 °C rating, and optional ECC - making it optimal for safety-critical, high-reliability embedded systems requiring deterministic write control and long-term data integrity.
Availability
M24C64-FMC6TG is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and automotive body control modules requiring stable component supply, consistent ECOPACK2 compliance, and guaranteed WLCSP-5 package availability.
Supply support for M24C64-FMC6TG 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, specializing in microcontrollers, power management, sensors, and memory solutions for industrial, automotive, and consumer markets.
The M24C64 series belongs to ST's serial EEPROM product line, designed specifically for robust, low-voltage, I²C-based nonvolatile storage in space-constrained and thermally demanding embedded systems.
FAQ
What is the function of the WC pin on M24C64-FMC6TG?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations to the entire 64-Kbit memory array when driven high. When WC is low or floating, writes are enabled. This provides system-level protection against accidental or malicious overwrites during power transients or firmware faults - independent of software state.
Does M24C64-FMC6TG support 1 MHz I²C operation across its full temperature and voltage range?
Yes - the M24C64-FMC6TG supports 1 MHz I²C bus operation from 1.7 V to 5.5 V and across the full –40 °C to +85 °C ambient temperature range, as confirmed in DS6638 Rev 38 Section 1. This enables high-throughput configuration loading in real-time systems without clock rate derating.
How does the WLCSP-5 package map signals to bumps, and is E2/E1/E0 configurable?
In the WLCSP-5 package, bumps are assigned as follows: A1 = VCC, B1 = SCL, C1 = WC, A2 = SDA, C2 = VSS. E2/E1/E0 inputs are internally tied to logic 001 and not externally accessible - this fixes the device select code's three LSBs, simplifying I²C address decoding in multi-device systems.
Is ECC (Error Correction Code) available on all M24C64-FMC6TG units?
No - ECC is implemented only in M24C64 devices fabricated using process letter 'K' (indicated in top-marking). Devices with other process letters lack ECC logic. ECC operates transparently per 4-byte group, correcting single-bit read errors but requiring coordinated write cycling across the group to maintain endurance budget.
M24C64-FMC6TG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFDFPN (2x3)
M24C64-FMC6TG FAQ
1.How can I place an order for M24C64-FMC6TG through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C64-FMC6TG 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 M24C64-FMC6TG reliable?
The price and inventory of M24C64-FMC6TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C64-FMC6TG is usually 5 days.
3.What payment methods are accepted for M24C64-FMC6TG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C64-FMC6TG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C64-FMC6TG?
M24C64-FMC6TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C64-FMC6TG 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 M24C64-FMC6TG?
For technical support, including M24C64-FMC6TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C64-FMC6TG requirements.
6.How does Aetrix verify that M24C64-FMC6TG is sourced from the original manufacturer or authorized distributors?
All M24C64-FMC6TG 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 M24C64-FMC6TG meets industry standards.
7.What is the process for return or replacement of M24C64-FMC6TG?
All M24C64-FMC6TG units undergo pre-shipment inspection (PSI). If there is an issue with M24C64-FMC6TG, 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 M24C64-FMC6TG part is unused and in its original packaging.
Return procedure for M24C64-FMC6TG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M24C64-FMC6TG Tags
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