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STMicroelectronics M24C64-FMN6TP
- Part No.:
- M24C64-FMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C64-FMN6TP.pdf
- Description:
- IC EEPROM 64KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,782
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Product details
Overview
M24C64-FMN6TP 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. It is used in industrial control modules for storing calibration data, firmware configuration flags, and device identity parameters.
For engineers reviewing the M24C64-FMN6TP datasheet, M24C64-FMN6TP pinout, M24C64-FMN6TP application, or M24C64-FMN6TP equivalent, key selection criteria include supply voltage range (1.7–5.5 V), I²C speed grade (1 MHz max), page size (32 bytes), write endurance (>4 million cycles), and package compatibility (SO8N, RoHS-compliant ECOPACK2).
Technical Context
The M24C64-FMN6TP implements a standard I²C slave interface with start/stop detection, ACK/NACK handshaking, and 7-bit device addressing with three chip-enable inputs (E2–E0) that configure the device select code's LSBs. Its internal architecture includes an address register, page latches, ECC logic (on process-K variants), and a high-voltage generator for EEPROM cell programming.
Write operations are controlled by the WC pin: low enables byte/page writes to the main 8 Kbyte array; high disables all writes while still acknowledging device select and address bytes. The SO8N package maps E2–E0 to physical pins 5–7, enabling up to eight devices on one I²C bus with unique addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8 K × 8 bits) - supports storage of firmware boot flags, sensor calibration tables, and serial number blocks in compact embedded systems. |
| I²C speed modes | 100 kHz / 400 kHz / 1 MHz - enables use in both legacy microcontroller interfaces and high-speed host controllers without protocol translation. |
| Supply voltage range | 1.7 V to 5.5 V (–40 °C to +85 °C) - interoperable with 1.8 V logic families and 3.3 V/5 V MCU I/O domains without level shifters. |
| Page write time | ≤5 ms - allows burst programming of up to 32 bytes per transaction, reducing I²C bus occupancy versus sequential byte writes. |
| Endurance & retention | >4 million write cycles; >200 years data retention - suitable for field-updatable parameter storage in unattended industrial equipment. |
| Write protection | Hardware WC pin + software lockable identification page (M24C64-D variant only) - prevents accidental overwrite of critical configuration during power transients or firmware bugs. |
| ESD/latch-up | Enhanced ESD protection (±4 kV HBM); latch-up immune - ensures robust operation in noisy factory-floor environments with frequent hot-plug events. |
Pinout & Package
Package: SO8N (ECOPACK2), 150-mil width, RoHS-compliant and halogen-free. Pin 1 identified by notch or dot marking; pin numbering follows standard counter-clockwise convention from top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (E2) | Chip enable input | LSB of 3-bit device address; tied to VSS or VCC to set I²C slave address (b1 of device select code); floating reads as low (0). |
| 2 (E1) | Chip enable input | Middle bit of device address (b2); enables multi-device I²C topology with up to eight M24C64 instances sharing one bus. |
| 3 (E0) | Chip enable input | MSB of device address (b3); combined with E2/E1, selects one of eight possible 7-bit I²C addresses (1010xxxR/W). |
| 4 (VSS) | Ground reference | System ground return path; must be low-impedance and decoupled near package to minimize noise coupling into SDA/SCL lines. |
| 5 (SDA) | Serial data I/O | Open-drain bidirectional line; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC; supports wired-AND bus arbitration. |
| 6 (SCL) | Serial clock input | Master-generated clock; rising edge samples SDA; falling edge permits SDA transitions; timing must meet tSU:STA, tHD:STA specs. |
| 7 (WC) | Write control input | Active-high hardware lock: when high, disables all write operations to main memory array while still acknowledging device/address bytes. |
| 8 (VCC) | Supply voltage | 1.7–5.5 V DC; requires local 10–100 nF ceramic decoupling capacitor between VCC and VSS pins to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-speed I²C compatibility | Supports 100 kHz (standard), 400 kHz (fast), and 1 MHz (fast-plus) modes - eliminates need for separate EEPROM families across product generations. |
| 32-byte page write buffer | Reduces I²C transaction count by up to 32× versus byte-write for contiguous data blocks - cuts firmware update time and bus contention. |
| Hardware write protect (WC pin) | Prevents unintended writes during brown-out, reset, or firmware fault conditions - critical for preserving factory-calibrated sensor offsets. |
| Extended voltage range (1.7 V min) | Enables direct interfacing with ultra-low-power MCUs (e.g., STM32L0/L4) without LDO regulation - reduces BOM cost and board space. |
| ECOPACK2 packaging | RoHS-compliant, halogen-free SO8N package with qualified lead finish - meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data Retention |
|---|---|
|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via I²C during boot and runtime reconfiguration; no timing-critical latency requirements. Use Value: Enables field-upgradable control logic without requiring flash reprogramming or external programmer hardware - reduces maintenance downtime. |
Use Scenario: Holding temperature-compensated offset/gain coefficients and sensor-specific linearization polynomials in MEMS pressure sensors. IC Role / Device Role / Timing Role: Calibration data repository read once at power-on; write occurs only during factory calibration or field recalibration. Use Value: Guarantees >200-year data retention under thermal cycling - eliminates drift-related recalibration intervals in sealed industrial enclosures. |
| Medical Device Serial Numbering | Automotive Body Control Module Settings |
|
Use Scenario: Recording unique device identifiers, manufacturing date codes, and regulatory compliance flags in Class IIa medical instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity storage; WC pin held high after programming to prevent post-deployment modification. Use Value: Meets IEC 62304 traceability requirements for firmware versioning and device lineage tracking across production batches. |
Use Scenario: Storing user preferences (mirror position, seat memory), lighting profiles, and diagnostic fault logs in automotive BCMs. IC Role / Device Role / Timing Role: Low-latency, high-endurance parameter store interfaced to 5 V automotive microcontrollers via I²C. Use Value: Withstands >4 million write cycles - supports daily user adjustments over 10+ year vehicle lifetime without wear-out failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C64D-SSHM-T (Microchip) | Same 64 Kbit capacity, 1.7–5.5 V, but supports only up to 400 kHz I²C; no WC pin - write protection relies solely on software address locking. | Lacks hardware-level write inhibit; unsuitable where power-fail write corruption risk exists. | Select if I²C speed ≤400 kHz suffices and system-level write control is already implemented in firmware. |
| BR24G64FJ-3GE2 (ROHM) | 64 Kbit, 1.6–5.5 V, supports 1 MHz I²C, includes built-in write protect (WP) pin functionally identical to WC; same SO8N footprint. | Pin-to-pin compatible with M24C64-FMN6TP; identical timing and voltage specs - drop-in replacement for supply chain diversification. | Choose for dual-sourcing assurance without layout or firmware changes; validated for same industrial temperature range. |
Compared with AT24C64D-SSHM-T, M24C64-FMN6TP offers faster 1 MHz I²C and hardware WC-based protection; versus BR24G64FJ-3GE2, it shares identical functionality but differs in internal ECC implementation and qualification test flow - both support seamless integration into existing SO8N designs.
Availability
M24C64-FMN6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart sensors, medical instrumentation, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for M24C64-FMN6TP 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 M24C64 series belongs to ST's serial EEPROM product line, engineered specifically for reliable, low-voltage, multi-speed I²C data storage in space-constrained embedded systems with stringent longevity and robustness requirements.
FAQ
Does M24C64-FMN6TP support 1 MHz I²C communication?
Yes, M24C64-FMN6TP fully supports Fast-Plus mode I²C at up to 1 MHz, as confirmed in Section 1 of the DS6638 datasheet (Rev 38). This requires compliant master timing (tLOW ≥ 0.5 μs, tHIGH ≥ 0.5 μs) and appropriate pull-up strength (typically ≤2.2 kΩ for 1 MHz on short traces).
What is the function of the WC pin, and how should it be connected?
The WC (Write Control) pin is an active-high hardware lock: when driven high, it disables all write operations to the main memory array while still acknowledging device select and address bytes. For permanent protection, tie WC to VCC; for dynamic control, drive it from a GPIO. Leaving it floating enables writes by default.
Can M24C64-FMN6TP be used with 1.8 V microcontrollers?
Yes - its guaranteed 1.7 V minimum operating voltage ensures full compatibility with 1.8 V logic families. The device maintains valid I²C timing margins and ACK behavior down to 1.7 V at –40 °C to +85 °C, eliminating need for level shifters in mixed-voltage systems.
Is the SO8N package of M24C64-FMN6TP RoHS-compliant and halogen-free?
Yes, the SO8N package carries ST's ECOPACK2 designation, certifying full compliance with RoHS Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. Full material declarations and test reports are available in ST's official product change notifications (PCNs).
M24C64-FMN6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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-SOIC
M24C64-FMN6TP FAQ
1.How can I place an order for M24C64-FMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C64-FMN6TP 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-FMN6TP reliable?
The price and inventory of M24C64-FMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C64-FMN6TP is usually 5 days.
3.What payment methods are accepted for M24C64-FMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C64-FMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C64-FMN6TP?
M24C64-FMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C64-FMN6TP 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-FMN6TP?
For technical support, including M24C64-FMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C64-FMN6TP requirements.
6.How does Aetrix verify that M24C64-FMN6TP is sourced from the original manufacturer or authorized distributors?
All M24C64-FMN6TP 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-FMN6TP meets industry standards.
7.What is the process for return or replacement of M24C64-FMN6TP?
All M24C64-FMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C64-FMN6TP, 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-FMN6TP part is unused and in its original packaging.
Return procedure for M24C64-FMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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