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STMicroelectronics M24C64-FCS6TP/K
- Part No.:
- M24C64-FCS6TP/K
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 5-UFBGA, WLCSP
- Datasheet:
-
M24C64-FCS6TP/K.pdf
- Description:
- IC EEPROM 64KBIT I2C 1MHZ 5WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:22,243
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Product details
Overview
M24C64-FCS6TP/K 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 for nonvolatile parameter storage in industrial controllers, sensor calibration modules, and power management units where low-voltage operation and robust data retention are required.
For engineers reviewing the M24C64-FCS6TP/K datasheet, M24C64-FCS6TP/K pinout, M24C64-FCS6TP/K application, or M24C64-FCS6TP/K equivalent, key selection considerations include supply voltage range (1.7–5.5 V), I²C speed grade compatibility (1 MHz max), page size (32 bytes), write lockability, and ECOPACK2-compliant SO8N package footprint.
Technical Context
The device implements a standard I²C slave protocol with 7-bit device addressing (1010xxxR/W for memory array, 1011xxxR/W for identification page), where E2/E1/E0 pins configure the three LSBs of the address. Internal logic includes an on-chip high-voltage generator for EEPROM programming and a power-on-reset circuit that prevents spurious writes during power ramp-up.
Write control (WC) is a dedicated hardware input that disables all write operations when driven high; it does not affect read functionality. The memory supports byte-write (≤5 ms) and page-write (≤5 ms) with automatic address incrementing and wraparound within the same 32-byte page boundary.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 64 Kbit (8 Kbyte), organized as 8K × 8 bits - enables storage of firmware configuration, calibration coefficients, or device identity data without external memory controller. |
| I²C speed support | 100 kHz / 400 kHz / 1 MHz - compatible with legacy and high-speed microcontroller I²C peripherals across industrial and consumer platforms. |
| 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 without level-shifting. |
| Page size | 32 bytes - defines maximum atomic write length; critical for minimizing write latency in burst-parameter updates (e.g., sensor offset tables). |
| Write endurance | >4 million cycles - ensures long-term reliability in applications requiring frequent field-updatable settings (e.g., energy meter tariff schedules). |
| Data retention | >200 years at 25 °C - guarantees persistent storage integrity over product lifetime without refresh or backup power. |
| ESD/latch-up | Enhanced protection per AEC-Q100 Class 2 - suitable for deployment in electrically noisy environments such as automotive body control modules. |
Pinout & Package
Package: SO8N (ECOPACK2), 150 mil width, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E0, E1, E2 | Chip enable address inputs | Set 3 LSBs of 7-bit I²C slave address (1010xxxR/W); tied to VSS or VCC to select one of eight possible addresses on shared bus. |
| SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up resistor; carries address, command, and data bytes per I²C protocol. |
| SCL | Serial clock input | Master-generated clock synchronizing all data transfers; rising edge samples SDA, falling edge drives SDA. |
| WC | Write control input | Hardware lock: high = full memory array write-disabled; low or floating = write enabled - provides fail-safe protection against accidental overwrites. |
| VCC | Supply voltage | Primary power rail (1.7–5.5 V); decoupling capacitor (10–100 nF) required near pin for stable internal HV generation during write cycles. |
| VSS | Ground reference | Common return path for all signals and internal charge pump; must be low-impedance connection to avoid timing skew or write failure. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all writes globally - eliminates need for software-based lock bits or register writes to prevent corruption during brown-out or reset. |
| Low-voltage operation | 1.7 V minimum supply enables direct integration with ultra-low-power MCUs (e.g., STM32L series) without auxiliary regulators. |
| Page write efficiency | 32-byte page buffer allows single-stop burst writes - reduces I²C transaction overhead by up to 31× vs. byte-by-byte writes for block updates. |
| Robust bus interface | Open-drain SDA with built-in ESD/latch-up hardening - withstands ±4 kV HBM ESD and operates reliably on long PCB traces or cables. |
| Identification page (M24C64-D variant) | 32-byte dedicated area permanently lockable to read-only - ideal for storing cryptographic keys or factory-calibrated sensor offsets that must never be modified post-deployment. |
Applications
| Industrial PLC Configuration Storage | Smart Sensor Calibration Data |
|---|---|
Use Scenario: Storing user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains settings across power cycles and firmware updates without battery backup. Use Value: Eliminates manual reconfiguration after maintenance; supports remote parameter updates via Modbus-to-I²C gateway with guaranteed write integrity under 24 V DC brown-out conditions. | Use Scenario: Holding temperature-compensated offset/gain coefficients and serial-number-linked calibration curves for MEMS pressure sensors. IC Role / Device Role / Timing Role: Factory-programmed calibration repository - accessed at power-on by host MCU before sensor initialization. Use Value: Enables <1% full-scale error across –40 °C to +85 °C; WC pin prevents field overwrite during sensor self-test sequences. |
| Power Supply Unit (PSU) Trim Settings | Medical Device Usage Logs |
Use Scenario: Storing digitally trimmed output voltage/current setpoints and safety trip thresholds in isolated AC/DC converters. IC Role / Device Role / Timing Role: Trim memory for digital power controllers - updated only during factory calibration or authorized service mode. Use Value: Achieves ±0.5% output regulation accuracy; WC pin asserted during normal operation blocks unauthorized adjustment via firmware exploit. | Use Scenario: Recording cumulative operating hours, fault event timestamps, and last-known operational state in portable diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant audit log - written sequentially during runtime with automatic rollover and CRC-protected entries. Use Value: Meets IEC 62304 Class C traceability requirements; >200-year data retention ensures logs survive device end-of-life and regulatory review periods. |
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 | Same 64 Kbit capacity, 1.7–5.5 V, but supports only up to 400 kHz I²C; no WC pin - write protection relies on software address locking. | Lacks hardware-level write disable; unsuitable for safety-critical systems requiring physical lockout of memory writes. | Select when cost sensitivity outweighs need for hardware write lock and 1 MHz bus speed. |
| BR24G64FJ-WE2 | 64 Kbit, 1.6–5.5 V, supports 1 MHz I²C, includes WC pin, but rated only for 0 °C to +70 °C ambient - no extended industrial temperature grade. | Not qualified for –40 °C operation; limited suitability in outdoor or automotive under-hood deployments. | Choose for commercial-grade applications where extended temperature range is unnecessary and footprint compatibility with SO8N is maintained. |
Compared with AT24C64D-SSHM-T and BR24G64FJ-WE2, the M24C64-FCS6TP/K uniquely combines 1 MHz I²C speed, hardware WC pin, –40 °C to +85 °C rating, and ECOPACK2 compliance - making it optimal for industrial edge devices requiring concurrent performance, reliability, and regulatory alignment.
Availability
M24C64-FCS6TP/K is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor nodes, digital power supplies, and medical diagnostic equipment requiring stable component supply across multi-year production cycles.
Supply support for M24C64-FCS6TP/K 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, specializing in microcontrollers, power management ICs, sensors, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The M24C64 belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, and pin-efficient configuration storage in space-constrained embedded systems operating across harsh environmental conditions.
FAQ
What is the function of the WC pin on M24C64-FCS6TP/K?
The WC (Write Control) pin is a dedicated hardware input that disables all write operations to the entire memory array when driven high. When low or left floating, writes are enabled. This provides deterministic, glitch-immune protection against accidental overwrites during power transitions or firmware faults - unlike software-based locks, it requires no clock or code execution to activate.
Can M24C64-FCS6TP/K operate at 1.6 V?
Yes - the M24C64-F variant (including M24C64-FCS6TP/K) supports 1.6 V minimum supply under restricted conditions: ambient temperature limited to 0 °C to +70 °C, and reduced I²C speed (≤400 kHz). At –40 °C to +85 °C, the guaranteed operating range starts at 1.7 V. These limits are specified in DS6638 Rev 38 Section 8.1.
How many unique I²C addresses can be assigned using E0–E2 pins?
E0, E1, and E2 configure the three least significant bits of the 7-bit I²C slave address (b2–b0), allowing eight distinct addresses (1010000R/W through 1010111R/W) on the same bus. All three pins must be hard-wired to VSS or VCC; floating is interpreted as logic 0, yielding default address 1010000R/W (0x50 for write, 0x51 for read).
Does M24C64-FCS6TP/K include error correction code (ECC)?
ECC is implemented only in devices marked with process letter "K" (e.g., M24C64-FCS6TP/K). It corrects single-bit errors within each 4-byte group during read operations, improving data integrity without software overhead. Devices with other process letters (e.g., "W", "R") lack ECC logic entirely - verify marking on top-side laser etch or reel label to confirm presence.
M24C64-FCS6TP/K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-UFBGA, WLCSP
- 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:
- 5-WLCSP (0.96x1.07)
M24C64-FCS6TP/K FAQ
1.How can I place an order for M24C64-FCS6TP/K through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C64-FCS6TP/K 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-FCS6TP/K reliable?
The price and inventory of M24C64-FCS6TP/K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C64-FCS6TP/K is usually 5 days.
3.What payment methods are accepted for M24C64-FCS6TP/K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C64-FCS6TP/K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C64-FCS6TP/K?
M24C64-FCS6TP/K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C64-FCS6TP/K 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-FCS6TP/K?
For technical support, including M24C64-FCS6TP/K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C64-FCS6TP/K requirements.
6.How does Aetrix verify that M24C64-FCS6TP/K is sourced from the original manufacturer or authorized distributors?
All M24C64-FCS6TP/K 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-FCS6TP/K meets industry standards.
7.What is the process for return or replacement of M24C64-FCS6TP/K?
All M24C64-FCS6TP/K units undergo pre-shipment inspection (PSI). If there is an issue with M24C64-FCS6TP/K, 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-FCS6TP/K part is unused and in its original packaging.
Return procedure for M24C64-FCS6TP/K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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