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STMicroelectronics M24C08-FMH6TG
- Part No.:
- M24C08-FMH6TG
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 5-UFDFN
- Datasheet:
-
M24C08-FMH6TG.pdf
- Description:
- IC EEPROM 8KBIT I2C 5UFDFPN
- Quantity:
- Payment:
- Shipping:
Inventory:13,999
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Product details
Overview
M24C08-FMH6TG from STMicroelectronics is an 8-Kbit I²C-compatible serial EEPROM organized as 1 K × 8 bits, operating across 1.7 V to 5.5 V (full temperature range) or 1.6 V to 5.5 V under restricted conditions. It supports 400 kHz and 100 kHz I²C bus modes, features 16-byte page write capability with ≤5 ms write time, and delivers >4 million write cycles and >200-year data retention at 55 °C. It is used in industrial control modules for parameter storage and calibration data backup.
For engineers reviewing the M24C08-FMH6TG datasheet, M24C08-FMH6TG pinout, M24C08-FMH6TG application, or M24C08-FMH6TG equivalent, key selection criteria include supply voltage flexibility (1.6–5.5 V), TSSOP8 package compatibility, full I²C address decoding with E2 pin support, and WC-enabled hardware write protection - all critical for low-power embedded systems requiring robust nonvolatile memory.
Technical Context
The M24C08-FMH6TG implements a standard I²C slave protocol with start/stop detection, ACK/NACK handshaking, and 7-bit device addressing (1010xxxR/W). Its internal architecture includes a page latch, X/Y decoders, sense amplifiers, and a high-voltage generator for EEPROM programming, enabling byte- and page-write operations without external high-voltage supply.
It integrates on-chip power-on-reset (POR) to prevent spurious writes during power ramp-up, and supports three read modes: random, current-address, and sequential - with automatic address roll-over (except in DFN5 package). The WC pin disables all write operations when driven high, while E2 sets bit b3 of the device address for multi-device bus configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 8 Kbit (1024 × 8 bits) - provides sufficient space for firmware configuration, sensor calibration tables, and device identity storage in compact embedded nodes. |
| I²C speed | Up to 400 kHz - enables fast parameter updates in real-time control loops without bus contention bottlenecks. |
| Supply voltage | 1.7 V to 5.5 V (full -40 °C to +85 °C range) - supports direct interfacing with 1.8 V logic, 3.3 V microcontrollers, and 5 V legacy systems. |
| Write time | ≤5 ms per byte or page - ensures deterministic latency for critical save operations, compatible with watchdog-timed firmware recovery sequences. |
| Data retention | 200 years at 55 °C - guarantees long-term reliability for unattended industrial equipment and metering applications. |
| Endurance | 4 million write cycles at 25 °C - accommodates frequent logging (e.g., every 10 seconds for 1 year = ~3.2M cycles) with margin. |
| ESD rating | ±3000 V HBM - meets IEC 61000-4-2 Level 3 requirements for robustness in factory-floor and field-deployed electronics. |
Pinout & Package
Package: TSSOP8 (DW), 169 mil width, RoHS-compliant and halogen-free (ECOPACK2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – E2 | Chip enable input | Sets b3 of 7-bit device address (1010xxx); tied high/low to select one of two possible I²C addresses on shared bus. |
| 2 – SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up; shares bus with other I²C slaves and master. |
| 3 – SCL | Serial clock input | Master-generated clock; synchronizes all data transfers; rise/fall time ≤50 ns required for 400 kHz operation. |
| 4 – WC | Write control input | Active-high hardware lock: disables all write operations (byte/page) when driven high; floating = write enabled. |
| 5 – VSS | Ground reference | Common return path for all signals and VCC decoupling; must be low-impedance to minimize noise coupling into SDA/SCL. |
| 6 – NC | No connect | Not bonded internally; left unconnected on PCB; no routing or termination required. |
| 7 – NC | No connect | Not bonded internally; left unconnected on PCB; no routing or termination required. |
| 8 – VCC | Supply voltage | Power input (1.7–5.5 V); requires local 10–100 nF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible supply voltage | 1.7 V to 5.5 V operation over full industrial temperature range (-40 °C to +85 °C), enabling drop-in use across 1.8 V, 3.3 V, and 5 V system domains. |
| Hardware write protection | Dedicated WC pin allows irreversible disable of all write operations via simple GPIO or resistor tie-off - eliminates risk of firmware corruption during field updates. |
| Page write mode | 16-byte atomic page writes reduce I²C transaction overhead by up to 15× vs. byte writes, accelerating bulk parameter saves (e.g., full sensor calibration set). |
| Enhanced reliability | 4 million write cycles and 200-year data retention validated per JEDEC JESD22-A117 and A110 standards - suitable for lifetime-critical infrastructure applications. |
| Robust I/O interface | SDA open-drain design with ≥8 pF input capacitance and ±3000 V HBM ESD protection ensures interoperability and noise immunity in electrically noisy environments. |
Applications
| Industrial PLC I/O Modules | Smart Energy Meters |
|---|---|
|
Use Scenario: Storing channel-specific calibration coefficients, firmware revision IDs, and fault log history in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage slave on I²C bus, accessed only during power-up or maintenance mode - no real-time timing constraints. Use Value: Enables field-replaceable I/O modules to retain calibrated accuracy without reprogramming; WC pin prevents accidental overwrite during hot-swap events. |
Use Scenario: Retaining tariff schedules, billing cycle counters, tamper-event timestamps, and cryptographic keys in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, low-power parameter storage element interfaced to metrology SoC's I²C port; operates during battery-backed sleep mode. Use Value: 1.7 V minimum VCC allows reliable operation down to end-of-battery life (e.g., CR2032 at ~1.8 V); 200-year retention ensures compliance with 20+ year utility asset lifecycles. |
| Medical Diagnostic Sensors | Automotive Body Control Modules |
|
Use Scenario: Saving patient-specific sensor offsets, gain settings, and self-test results in portable ECG or pulse oximetry devices. IC Role / Device Role / Timing Role: I²C-configurable memory peripheral co-located with analog front-end; accessed during device initialization and post-measurement save. Use Value: Page write capability reduces save latency to <5 ms - critical for meeting FDA-required boot-time limits (<2 s) in Class II devices. |
Use Scenario: Storing seat position memory, mirror angle presets, and lighting configuration profiles in vehicle door modules. IC Role / Device Role / Timing Role: Automotive-grade EEPROM slave on body domain I²C bus; withstands load-dump transients via internal POR and latch-up immunity. Use Value: ECOPACK2 TSSOP8 package meets AEC-Q200 stress test requirements; -40 °C to +85 °C rating covers under-hood and cabin mounting options. |
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 rated for 1.7–5.5 V only (no 1.6 V extended mode); 1 million write cycles; no WC pin - write protection via software address locking. | Lacks hardware write disable; requires firmware-level access control - unsuitable where physical security or fail-safe lockout is mandated. | Select when cost sensitivity outweighs need for hardware write lock and extended low-voltage operation. |
| BR24G08NUX-5TR (ROHM) | 8-Kbit I²C EEPROM with 1.6–5.5 V range and WC pin, but only rated for -40 °C to +105 °C; 1 million write cycles; uses different device address mapping (10100xxR/W). | Higher max temperature suits under-hood automotive use, but lower endurance limits logging frequency in high-cycle applications. | Select for extended temperature environments where 105 °C operation is required and write count is <1M over product lifetime. |
Compared with AT24C08D-SSHM-T and BR24G08NUX-5TR, the M24C08-FMH6TG uniquely combines 1.6 V extended-voltage support, hardware WC lock, 4M write endurance, and industrial-temp I²C timing - making it optimal for safety-critical, field-updatable, and battery-constrained designs.
Availability
M24C08-FMH6TG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart energy meters, medical diagnostic sensors, and automotive body control modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for M24C08-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, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.
The M24C08-FMH6TG belongs to ST's M24C serial EEPROM product line, engineered specifically for robust, low-voltage, I²C-based nonvolatile storage in space-constrained and reliability-critical embedded systems.
FAQ
What is the function of the WC pin on M24C08-FMH6TG?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations (byte and page) when driven to VCC. When WC is low or floating, writes are enabled. This provides fail-safe protection against unintended firmware or noise-induced memory corruption - especially valuable during power transitions or field updates.
Can M24C08-FMH6TG operate at 1.6 V continuously?
Yes, but only under restricted conditions: ambient temperature must be between 0 °C and 85 °C for write operations, and -40 °C to 85 °C for read operations. Full 1.6–5.5 V functionality is not guaranteed across the entire -40 °C to +85 °C range - consult Table 8 in DS9362 Rev 7 for exact voltage/temperature boundaries.
How does the E2 pin affect I²C addressing?
The E2 pin sets bit b3 of the 7-bit device address (1010xxxR/W). With E2 tied high, the address becomes 10101xxR/W; with E2 tied low, it becomes 10100xxR/W. This allows up to two M24C08-FMH6TG devices on the same I²C bus without address conflict - essential for modular system designs with redundant or configurable memory.
Is the TSSOP8 package of M24C08-FMH6TG lead-free and RoHS-compliant?
Yes, the M24C08-FMH6TG in TSSOP8 (DW) package is RoHS-compliant and halogen-free, certified under ECOPACK2 - STMicroelectronics' environmental standard aligned with EU Directive 2011/65/EU and JEDEC J-STD-020. Full material declarations and test reports are available via ST's Quality Portal.
M24C08-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:
- 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:
- 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)
M24C08-FMH6TG FAQ
1.How can I place an order for M24C08-FMH6TG through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C08-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 M24C08-FMH6TG reliable?
The price and inventory of M24C08-FMH6TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C08-FMH6TG is usually 5 days.
3.What payment methods are accepted for M24C08-FMH6TG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C08-FMH6TG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C08-FMH6TG?
M24C08-FMH6TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C08-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 M24C08-FMH6TG?
For technical support, including M24C08-FMH6TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C08-FMH6TG requirements.
6.How does Aetrix verify that M24C08-FMH6TG is sourced from the original manufacturer or authorized distributors?
All M24C08-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 M24C08-FMH6TG meets industry standards.
7.What is the process for return or replacement of M24C08-FMH6TG?
All M24C08-FMH6TG units undergo pre-shipment inspection (PSI). If there is an issue with M24C08-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 M24C08-FMH6TG part is unused and in its original packaging.
Return procedure for M24C08-FMH6TG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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