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STMicroelectronics M24C32-FMN6TP
- Part No.:
- M24C32-FMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C32-FMN6TP.pdf
- Description:
- IC EEPROM 32KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:11,825
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Product details
Overview
M24C32-FMN6TP from STMicroelectronics is a 32-Kbit I²C-compatible EEPROM organized as 4 K × 8 bits, operating from 1.7 V to 5.5 V over –40 °C to +85 °C, supporting 1 MHz Fast Mode Plus, 400 kHz Fast Mode, and 100 kHz Standard Mode I²C bus protocols, 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 M24C32-FMN6TP datasheet, M24C32-FMN6TP pinout, M24C32-FMN6TP application, or M24C32-FMN6TP equivalent, key selection considerations include supply voltage range (1.7–5.5 V), guaranteed 4 million write cycles, 200-year data retention, SO8N package compatibility, and hardware-based memory array lock via WC input.
Technical Context
The M24C32-FMN6TP implements a standard I²C target interface with 7-bit device addressing, where E0–E2 pins configure the three LSBs of the slave address (default 000 when unconnected), and WC enables hardware-level write inhibition across the full 32-Kbit array. It supports byte, page (up to 32 bytes), and identification page (M24C32-DF variant only) operations.
Its internal architecture includes an auto-incrementing address counter for sequential reads, ACK polling support for write cycle completion detection, and open-drain SDA/SCL interfaces requiring external pull-ups. The device integrates a power-on reset (POR) circuit ensuring no spurious writes during power ramp-up or down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 32 Kbit (4 K × 8 bits) - sufficient for firmware configuration tables or calibration data in microcontroller-based systems |
| I²C speed modes | 1 MHz (Fast Mode Plus), 400 kHz (Fast Mode), 100 kHz (Standard Mode) - enables flexible integration with legacy and high-speed controllers |
| Page size | 32 bytes - matches typical MCU cache line or packet buffer sizes for efficient bulk writes |
| Write endurance | 4 million cycles - supports frequent field-updatable parameters without premature wear-out |
| Data retention | 200 years at +25 °C - ensures long-term reliability in unattended infrastructure monitoring applications |
| Supply voltage | 1.7 V to 5.5 V - compatible with 1.8 V logic rails and 5 V legacy systems without level shifting |
| Operating temp | –40 °C to +85 °C - qualified for industrial ambient environments including motor drives and PLC I/O modules |
Pinout & Package
Package: SO8N (150 mil width, ECOPACK2-compliant), 8-pin surface-mount plastic small outline package with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: E2 | Chip enable LSB | Hardwired low or pulled to VSS/VCC to set device address bits; floating = logic 0 - enables up to 8 devices on same I²C bus |
| 2: E1 | Chip enable middle bit | Same function as E2; combined with E0/E2 forms 3-bit address extension for multi-device topology |
| 3: E0 | Chip enable MSB | Same function as E2; all three pins define b3–b1 of 7-bit I²C slave address (1010xxx) |
| 4: VSS | Ground reference | Return path for VCC supply and I/O signals; requires low-inductance PCB connection near pin |
| 5: SDA | Serial data bidirectional | Open-drain I/O for I²C data; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC |
| 6: SCL | Serial clock input | Input-only clock line synchronized to master controller; determines maximum data rate per mode |
| 7: WC | Write control | Active-high hardware lock: high = full memory array write-prohibited; low or floating = write enabled |
| 8: VCC | Power supply | 1.7–5.5 V DC input; requires local 10–100 nF decoupling capacitor between VCC and VSS |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin disables all write operations globally - eliminates need for software-based lock bits or command sequences |
| Fast page write | 32-byte writes complete in ≤5 ms (3.2 ms typical) - reduces firmware update latency in real-time systems |
| Enhanced robustness | ESD >4 kV HBM, latch-up immune per JESD78 - suitable for factory-floor or outdoor deployment without extra protection |
| Identification page (M24C32-DF only) | 32-byte dedicated area permanently lockable to read-only - stores cryptographic keys or serial numbers with tamper resistance |
| Wide VCC range | Operates down to 1.7 V - supports direct interfacing with 1.8 V microcontrollers without regulator or level shifter |
Applications
| Industrial Sensor Calibration | Smart Meter Firmware Storage |
|---|---|
Use Scenario: Storing temperature/pressure offset coefficients and linearization tables in factory-calibrated sensors deployed in HVAC or process control systems. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed via I²C during sensor initialization or field recalibration. Use Value: Enables traceable, field-updatable calibration without replacing hardware - leverages 200-year retention and 4M-cycle endurance. | Use Scenario: Holding firmware patch images and secure boot keys in utility-grade electricity meters subject to long service life and remote OTA updates. IC Role / Device Role / Timing Role: Secure, write-protected configuration memory interfaced to metering SoC's I²C controller during boot and update phases. Use Value: WC pin prevents accidental corruption during brown-out events; 1.7 V operation ensures functionality during low-battery backup mode. |
| PLC I/O Module Configuration | Medical Device Settings Backup |
Use Scenario: Retaining channel-specific scaling factors, alarm thresholds, and communication protocol settings in modular programmable logic controller I/O cards. IC Role / Device Role / Timing Role: Persistent configuration register bank accessed at power-on reset and during hot-swap reconfiguration. Use Value: SO8N package allows compact placement near MCU; 1 MHz I²C support enables fast configuration load during module insertion. | Use Scenario: Backing up user-adjusted therapy parameters (e.g., infusion rate limits, alarm sensitivity) in portable infusion pumps and diagnostic handhelds. IC Role / Device Role / Timing Role: Safety-critical nonvolatile memory storing FDA-required audit trails and clinician-set values. Use Value: Hardware write protection (WC) prevents unintended modification during battery replacement or ESD events - critical for IEC 62304 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C32D-SSHM-T | 32-Kbit I²C EEPROM, 1.7–5.5 V, 1 MHz max, SO8N package, but lacks WC pin and identification page | No hardware write lock; relies on software address locking - less robust against power glitches | Select if cost sensitivity outweighs need for hardware-level write protection |
| BR24G32FJ-WE2 | 32-Kbit I²C EEPROM, 1.6–5.5 V, 1 MHz, TSSOP8, includes WP pin (functionally identical to WC), but rated only to +105 °C | Higher temperature rating suits automotive under-hood use, but footprint differs (TSSOP8 vs SO8N) | Select for extended-temp designs where SO8N footprint isn't mandatory |
Compared with AT24C32D-SSHM-T and BR24G32FJ-WE2, the M24C32-FMN6TP uniquely combines SO8N compatibility, integrated WC-based hardware lock, and industrial-grade –40 °C to +85 °C operation - making it optimal for space-constrained, safety-aware industrial control systems.
Availability
M24C32-FMN6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter firmware storage, and PLC I/O module configuration requiring stable component supply across multi-year production cycles.
Supply support for M24C32-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, analog ICs, power management, and memory solutions for industrial, automotive, and consumer markets.
The M24C32-FMN6TP belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile data storage in space-constrained embedded systems demanding long-term reliability and wide supply voltage tolerance.
FAQ
What is the function of the WC pin on M24C32-FMN6TP?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations to the entire 32-Kbit memory array when driven high. When low or left floating, writes are enabled. This provides deterministic, glitch-immune protection independent of firmware state - critical for preventing corruption during power transitions or system resets.
Does M24C32-FMN6TP support the identification page feature?
No - the identification page (32-byte dedicated area with permanent lock capability) is exclusive to the M24C32-DF variant. The M24C32-FMN6TP is the standard M24C32-F version and does not include this feature. Its memory map consists solely of the main 4 K × 8-bit array with no additional ID page or lock instruction support.
Can M24C32-FMN6TP operate reliably at 1.7 V supply?
Yes - the M24C32-FMN6TP is fully specified for operation from 1.7 V to 5.5 V across the full –40 °C to +85 °C temperature range. At 1.7 V, it maintains full I²C functionality including 100 kHz Standard Mode and 400 kHz Fast Mode, with guaranteed timing margins and write endurance, enabling direct interface with 1.8 V logic families.
How many devices can share the same I²C bus with M24C32-FMN6TP?
Up to eight M24C32-FMN6TP devices can coexist on one I²C bus using the E0–E2 chip enable pins to configure unique 3-bit address extensions (b3–b1 of the 7-bit slave address). Each device must have a distinct combination of E0/E1/E2 tied to VSS or VCC; floating pins default to 0, so explicit biasing is required for multi-drop configurations.
M24C32-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:
- 32Kbit
- Memory Organization:
- 4K 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
M24C32-FMN6TP FAQ
1.How can I place an order for M24C32-FMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C32-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 M24C32-FMN6TP reliable?
The price and inventory of M24C32-FMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C32-FMN6TP is usually 5 days.
3.What payment methods are accepted for M24C32-FMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C32-FMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C32-FMN6TP?
M24C32-FMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C32-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 M24C32-FMN6TP?
For technical support, including M24C32-FMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C32-FMN6TP requirements.
6.How does Aetrix verify that M24C32-FMN6TP is sourced from the original manufacturer or authorized distributors?
All M24C32-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 M24C32-FMN6TP meets industry standards.
7.What is the process for return or replacement of M24C32-FMN6TP?
All M24C32-FMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M24C32-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 M24C32-FMN6TP part is unused and in its original packaging.
Return procedure for M24C32-FMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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