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STMicroelectronics M24C16-WMN6P
- Part No.:
- M24C16-WMN6P
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M24C16-WMN6P.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,051
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Product details
Overview
M24C16-WMN6P from STMicroelectronics is a 16-Kbit I²C-compatible EEPROM organized as 2 K × 8 bits, operating from 2.5 V to 5.5 V supply and supporting up to 400 kHz clock frequency. It features 16-byte page write capability, >4 million write cycles, 200-year data retention, and hardware write protection via WC pin. Used for configuration storage in industrial controllers, power supply monitors, and sensor calibration modules.
For engineers reviewing the M24C16-WMN6P datasheet, M24C16-WMN6P pinout, M24C16-WMN6P application, or M24C16-WMN6P equivalent, key selection criteria include I²C voltage compatibility (2.5–5.5 V), TSSOP8 ECOPACK2 packaging, WC-enabled memory lock, 5 ms max write time, and -40 °C to +85 °C industrial temperature range.
Technical Context
The M24C16-WMN6P implements a standard I²C slave interface with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment. Its memory array uses floating-gate EEPROM technology with on-chip charge pump for byte/page programming.
Write control (WC) is a dedicated active-high input that disables all write operations-including byte, page, and address setup-when asserted, while still allowing read access and device addressing. The SDA line operates as an open-drain I/O requiring external pull-up, and SCL is a CMOS-compatible input with defined rise/fall time limits (≤50 ns) under 100 pF bus load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 16 Kbit (2048 × 8), sufficient for firmware flags, calibration coefficients, or device ID storage in space-constrained designs |
| I²C clock support | Up to 400 kHz - enables fast configuration loading without requiring high-speed MCU peripherals |
| Supply voltage | 2.5 V to 5.5 V - interoperable with 3.3 V and 5 V logic domains without level shifting |
| Write endurance | 4,000,000 cycles at 25 °C - supports frequent recalibration or logging in test equipment |
| Data retention | 200 years at 55 °C - ensures long-term reliability in unattended infrastructure devices |
| Operating temperature | -40 °C to +85 °C - qualified for industrial automation, metering, and automotive body electronics |
| Page size | 16 bytes - matches typical I²C burst transfer length and minimizes bus overhead per write operation |
Pinout & Package
Package: TSSOP8 (DW), 169 mil width, ECOPACK2-compliant, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up; shares wire-OR topology with other I²C slaves |
| 2 (VSS) | Ground | Reference return path for VCC and all internal circuitry; must be low-impedance connection |
| 3 (SCL) | Serial Clock Input | CMOS-level clock input; timing-critical; must meet ≤50 ns rise/fall under 100 pF load |
| 4 (NC) | No Connect | Internally unconnected; no electrical function; may be left floating or tied to ground for mechanical stability |
| 5 (NC) | No Connect | Internally unconnected; no electrical function; not used in TSSOP8 variant |
| 6 (NC) | No Connect | Internally unconnected; no electrical function; not used in TSSOP8 variant |
| 7 (VCC) | Supply Voltage | Primary power rail; requires local 10–100 nF decoupling capacitor near pins 2 and 7 |
| 8 (WC) | Write Control Input | Active-high hardware lock; disables all writes when high; floats or pulled low to enable programming |
Key Features
| Feature | Design Value |
|---|---|
| Hardware write protection | WC pin provides unconditional, pin-level disable of all write instructions - eliminates software bugs or bus glitches from corrupting stored data |
| ECOPACK2 packaging | TSSOP8 footprint reduces PCB area by ~40% vs SO8 while maintaining reflow compatibility and thermal performance |
| Fast page write | ≤5 ms internal write time for up to 16 bytes - cuts configuration update latency versus sequential byte writes |
| Enhanced ESD/latch-up immunity | 3 kV HBM ESD rating and robust latch-up immunity - suitable for assembly-line handling and field-replaceable modules |
| Polling-ready ACK protocol | Supports ACK polling during write cycle - allows host MCU to avoid fixed delays and optimize bus utilization |
Applications
| Industrial PLC Configuration Storage | Smart Power Supply Calibration |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and user-defined alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during boot or runtime reconfiguration. Use Value: Enables field-upgradable settings without firmware reflashing; WC pin prevents accidental overwrites during live operation. | Use Scenario: Holding factory-trimmed voltage/current reference offsets and compensation curves in digitally controlled AC/DC converters. IC Role / Device Role / Timing Role: Calibration data repository read at power-on and updated only during factory calibration or service mode. Use Value: Maintains ±0.5% output accuracy across temperature; 200-year retention ensures lifetime calibration integrity. |
| Sensor Module Identity & Trim | Medical Device Usage Logging |
Use Scenario: Storing unique serial numbers, sensor sensitivity coefficients, and linearization polynomials in MEMS pressure/temperature modules. IC Role / Device Role / Timing Role: Persistent identity and calibration store accessed during sensor initialization sequence. Use Value: Eliminates need for laser-trimmed resistors; 16-byte page write aligns with typical coefficient packet size. | Use Scenario: Recording cumulative operational hours, error event timestamps, and firmware version history in portable diagnostic equipment. IC Role / Device Role / Timing Role: Wear-leveling–free event log storage updated on power-down or critical state transitions. Use Value: 4M write cycles support >10 years of daily logging at 100 entries/day; -40 °C to +85 °C rating covers clinical and transport environments. |
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) | Same 16 Kbit size, 1.7–5.5 V supply, but lacks WC pin; uses software write protect (WP bit in status register) | No hardware lockout - requires firmware coordination to prevent concurrent writes | Select if system already uses Microchip's AT24Cxx family and software-controlled protection suffices |
| BR24G16FJ-3GE2 (ROHM) | 16 Kbit, 1.7–5.5 V, includes WC pin, but rated only to +105 °C (vs +85 °C); DFN8 package only | Higher temp rating suits under-hood automotive use; DFN8 requires different layout and reflow profile | Select for extended temperature applications where TSSOP8 is not required and DFN8 is acceptable |
Compared with AT24C16D-SSHM-T and BR24G16FJ-3GE2, the M24C16-WMN6P uniquely combines hardware WC protection, TSSOP8 ECOPACK2 packaging, and industrial -40 °C to +85 °C qualification - making it optimal for safety-critical or field-serviceable equipment where physical write lockout and legacy footprint compatibility are mandatory.
Availability
M24C16-WMN6P is available at Aetrix Electronics and suitable for industrial PLCs, smart power supplies, sensor calibration modules, and medical usage loggers requiring stable component supply across multi-year production cycles.
Supply support for M24C16-WMN6P 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 M24Cxx series targets cost-sensitive, space-constrained embedded systems needing reliable, low-power, I²C-based nonvolatile storage - with emphasis on industrial-grade temperature range, ECOPACK2 environmental compliance, and pin-level hardware security.
FAQ
What is the function of the WC pin on M24C16-WMN6P?
The WC (Write Control) pin is an active-high hardware lock that disables all write operations - including byte write, page write, and address setup - when driven high. When WC is low or floating, writes are enabled. Reads remain fully functional regardless of WC state, enabling safe read-only access during maintenance or diagnostics.
Can M24C16-WMN6P operate at 1.8 V supply?
No. The M24C16-WMN6P variant is specified for 2.5 V to 5.5 V operation only. For 1.8 V compatibility, STMicroelectronics offers the M24C16-R variant (1.8–5.5 V), which shares identical pinout and functionality but differs in internal voltage regulation and qualification testing.
Is the TSSOP8 package of M24C16-WMN6P lead-free and RoHS-compliant?
Yes. The M24C16-WMN6P in TSSOP8 (DW) package carries the ECOPACK2 designation, confirming full compliance with RoHS Directive 2011/65/EU and JEDEC J-STD-020D soldering standards. Lead finish is matte tin, and the package contains no intentionally added lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE.
How does ACK polling work during write cycles?
After issuing a write command, the host can poll by sending a repeated Start + device address (R/W = 0). If the EEPROM is still busy, it returns NoAck; if ready, it replies with Ack. This avoids fixed 5 ms delays and allows precise synchronization with the internal write completion, improving I²C bus efficiency in time-sensitive applications.
M24C16-WMN6P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- Programmable:
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
M24C16-WMN6P FAQ
1.How can I place an order for M24C16-WMN6P through Aetrix?
Please submit a Request for Quotation (RFQ) for M24C16-WMN6P 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-WMN6P reliable?
The price and inventory of M24C16-WMN6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24C16-WMN6P is usually 5 days.
3.What payment methods are accepted for M24C16-WMN6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24C16-WMN6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24C16-WMN6P?
M24C16-WMN6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24C16-WMN6P 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-WMN6P?
For technical support, including M24C16-WMN6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24C16-WMN6P requirements.
6.How does Aetrix verify that M24C16-WMN6P is sourced from the original manufacturer or authorized distributors?
All M24C16-WMN6P 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-WMN6P meets industry standards.
7.What is the process for return or replacement of M24C16-WMN6P?
All M24C16-WMN6P units undergo pre-shipment inspection (PSI). If there is an issue with M24C16-WMN6P, 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-WMN6P part is unused and in its original packaging.
Return procedure for M24C16-WMN6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M24C16-WMN6P Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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