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STMicroelectronics M24C16-FMH6TG
- Part No.:
- M24C16-FMH6TG
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 5-UFDFN
- Datasheet:
-
M24C16-FMH6TG.pdf
- Description:
- IC EEPROM 16KBIT I2C 5UFDFPN
- Quantity:
- Payment:
- Shipping:
Inventory:74,290
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Product details
Overview
M24C16-FMH6TG from STMicroelectronics is a 16-Kbit I²C-compatible EEPROM organized as 2 K × 8 bits, operating with supply voltage from 1.7 V to 5.5 V across –40 °C to +85 °C, supporting 400 kHz I²C clock, 16-byte page write, and full-array write protection via WC pin - deployed in industrial control modules for parameter storage and calibration data retention.
For engineers reviewing the M24C16-FMH6TG datasheet, M24C16-FMH6TG pinout, M24C16-FMH6TG application, or M24C16-FMH6TG equivalent, key selection factors include low-voltage operation down to 1.7 V (full temp range), 4 million write cycles, 200-year data retention, ECOPACK2-compliant UFDFPN8 package, and hardware write-protect functionality.
Technical Context
The M24C16-FMH6TG implements a standard I²C slave interface with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment during sequential reads. It uses on-chip charge pump for EEPROM programming and includes power-on-reset (POR) circuitry to inhibit writes during unstable VCC ramp-up.
Memory access supports random address read (via dummy write + restart), current address read, and sequential read up to page boundary rollover. Write control (WC) pin enables hardware-level protection of the entire 2 Kbyte array - high WC disables all data byte acknowledgments while still accepting device select and address bytes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2 K × 8 bits) - sufficient for firmware configuration, sensor calibration tables, and device identity storage in space-constrained embedded systems. |
| I²C clock frequency | Up to 400 kHz - compatible with standard-mode I²C buses without requiring high-speed mode controllers or level shifters. |
| Supply voltage range | 1.7 V to 5.5 V (full temperature range) - enables direct interfacing with 1.8 V logic and legacy 3.3 V/5 V microcontrollers without external regulators. |
| Page size | 16 bytes - optimizes write efficiency for grouped parameters (e.g., ADC offset/gain sets) while minimizing bus occupancy per write transaction. |
| Write endurance | 4 million write cycles - supports frequent field updates (e.g., energy meter kWh counters, battery cycle logs) over product lifetime. |
| Data retention | 200 years at 55 °C - ensures long-term reliability of stored calibration coefficients and security keys without refresh mechanisms. |
| Operating temperature | –40 °C to +85 °C - qualified for industrial automation, automotive body electronics, and outdoor IoT edge nodes. |
Pinout & Package
Package: UFDFPN8 (MC) - 2 mm × 3 mm, 0.5 mm pitch, ECOPACK2-compliant, surface-mount DFN with exposed pad for thermal performance and RoHS compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SDA | Serial Data I/O | Open-drain bidirectional line for I²C data transfer; requires external pull-up resistor; wire-OR capable with other I²C slaves. |
| 2: SCL | Serial Clock Input | Master-generated clock signal synchronizing all data transfers; sampled on rising edge for input, controls timing of output transitions. |
| 3: WC | Write Control Input | Hardware write-protect enable: high = disable all data writes (acknowledges address but not data); low or floating = enable writes. |
| 4: VSS | Ground Reference | Primary return path for VCC and internal logic; must be low-impedance connection to minimize noise coupling into SDA/SCL. |
| 5: VCC | Supply Voltage | Single power rail (1.7–5.5 V); decoupling capacitor (10–100 nF) required near pins 4–5 to suppress switching transients during write cycles. |
| 6–8: NC | No Connect | Unbonded die pads; must remain unconnected in PCB layout to avoid parasitic coupling or ESD path disruption. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all data writes while preserving address decoding - prevents accidental corruption during firmware updates or brown-out conditions. |
| Low-voltage operation | 1.7 V minimum supply enables direct integration with ultra-low-power MCUs (e.g., STM32L0/L4) without level-shifting or auxiliary LDOs. |
| Page write capability | 16-byte burst writes reduce I²C bus occupation by >85% vs. individual byte writes - critical for real-time logging in time-sensitive applications. |
| Enhanced reliability | 4M write cycles and 200-year data retention validated per JEDEC JESD22-A117 - eliminates need for wear-leveling firmware in host controller. |
| ECOPACK2 packaging | Halogen-free, lead-free, RoHS-compliant DFN8 footprint reduces PCB area by 60% vs. SO8 and improves thermal dissipation in sealed enclosures. |
Applications
| Industrial PLC I/O Modules | Smart Energy Meters |
|---|---|
Use Scenario: Storing channel-specific calibration coefficients, scaling factors, and fault history logs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during boot and runtime reconfiguration; WC pin tied low during commissioning, high during normal operation. Use Value: Enables field recalibration without firmware update; 1.7 V operation ensures compatibility with 1.8 V FPGA configuration interfaces and isolated power domains. | Use Scenario: Retaining tariff schedules, billing registers, tamper-event timestamps, and cryptographic keys in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, long-life data vault interfaced to metrology SoC via isolated I²C; WC pin driven by tamper-detection circuit to lock memory on enclosure breach. Use Value: Meets ANSI C12.19/C12.22 20-year data retention requirement; 4M write cycles support daily kWh accumulation over 10+ years. |
| Automotive Body Control Units | Medical Infusion Pumps |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and diagnostic trouble codes (DTCs) in 12 V vehicle electrical systems with wide-input DC-DC converters. IC Role / Device Role / Timing Role: I²C EEPROM co-located with MCU in BCM module; operates from 1.8 V rail derived from buck converter; WC pin monitored by safety watchdog. Use Value: Survives cold-crank (down to 6 V battery) and load-dump transients due to 1.7 V functional margin and enhanced ESD/latch-up protection. | Use Scenario: Storing drug library parameters, delivery rate profiles, and usage audit trails in Class II medical devices requiring FDA 21 CFR Part 11 compliance. IC Role / Device Role / Timing Role: Tamper-evident nonvolatile memory storing encrypted therapy data; accessed only during authorized maintenance sessions with WC pin asserted externally. Use Value: Supports ALARM-ON-ERROR and FAIL-SAFE design patterns; 200-year retention satisfies FDA requirement for permanent record integrity over device lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16D-SSHM-T (Microchip) | 1.8 V–5.5 V supply; no WC pin; software write protection only; 1 million write cycles. | Lacks hardware-level write lock; requires firmware coordination for secure updates. | Select when cost sensitivity outweighs need for physical write-disable during power faults or firmware crashes. |
| BR24G16NUX-5TR (ROHM) | 1.6 V–5.5 V; built-in error correction (ECC); 1 million write cycles; 100-year retention. | Includes single-bit ECC for enhanced data integrity in radiation-prone environments. | Select when system-level CRC validation is insufficient and bit-flip immunity is mandated (e.g., aerospace telemetry). |
Compared with AT24C16D-SSHM-T and BR24G16NUX-5TR, the M24C16-FMH6TG uniquely combines hardware write protection, 4M endurance, and 200-year retention in a compact DFN8 package - making it optimal for industrial and medical applications where data integrity must survive firmware failures and extended service life.
Availability
M24C16-FMH6TG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply, long-lifecycle support, and ECOPACK2-compliant packaging.
Supply support for M24C16-FMH6TG 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, delivering intelligent power, sensing, connectivity, and microcontroller solutions for industrial, automotive, and consumer markets.
The M24C16-FMH6TG belongs to ST's serial EEPROM product line, designed specifically for robust, low-voltage, high-endurance nonvolatile storage in space- and power-constrained embedded systems.
FAQ
What is the function of the WC pin on M24C16-FMH6TG?
The WC (Write Control) pin provides hardware-level write protection: when driven high, it disables all data byte writes while still acknowledging device select and address bytes. This prevents accidental memory corruption during power transients, firmware resets, or debug sessions. WC may be left floating (internally pulled low) or actively driven low to enable writes.
Can M24C16-FMH6TG operate reliably at 1.6 V?
No - the M24C16-FMH6TG is specified for 1.7 V to 5.5 V operation across the full –40 °C to +85 °C temperature range. While the M24C16-F family allows 1.6 V operation under limited conditions (0 °C to +70 °C, reduced write endurance), this specific variant (MH6TG) is characterized and guaranteed only from 1.7 V.
How does page write improve system efficiency?
Page write allows up to 16 consecutive bytes to be written in a single I²C transaction, reducing bus overhead by eliminating repeated start/stop/address sequences. For example, writing a 16-byte calibration table takes one transaction instead of 16 - cutting I²C bus time by ~87% and freeing MCU resources for real-time tasks.
Is the UFDFPN8 package of M24C16-FMH6TG RoHS and REACH compliant?
Yes - the UFDFPN8 (MC) package carries STMicroelectronics' ECOPACK2 certification, confirming compliance with RoHS Directive 2011/65/EU, REACH Regulation (EC) No. 1907/2006, and halogen-free material requirements. Full compliance documentation is available in ST's ECOPACK2 declaration (Doc ID 7191395).
M24C16-FMH6TG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-UFDFPN (1.7x1.4)
M24C16-FMH6TG FAQ
1.How can I place an order for M24C16-FMH6TG through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C16-FMH6TG 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 M24C16-FMH6TG reliable?
The price and inventory of M24C16-FMH6TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C16-FMH6TG is usually 5 days.
3.What payment methods are accepted for M24C16-FMH6TG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C16-FMH6TG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C16-FMH6TG?
M24C16-FMH6TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C16-FMH6TG 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 M24C16-FMH6TG?
For technical support, including M24C16-FMH6TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C16-FMH6TG requirements.
6.How does Aetrix verify that M24C16-FMH6TG is sourced from the original manufacturer or authorized distributors?
All M24C16-FMH6TG 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 M24C16-FMH6TG meets industry standards.
7.What is the process for return or replacement of M24C16-FMH6TG?
All M24C16-FMH6TG units undergo pre-shipment inspection (PSI). If there is an issue with M24C16-FMH6TG, 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 M24C16-FMH6TG part is unused and in its original packaging.
Return procedure for M24C16-FMH6TG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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