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STMicroelectronics M24SR02-YSG12I/2
- Part No.:
- M24SR02-YSG12I/2
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
M24SR02-YSG12I/2.pdf
- Description:
- MEMORY
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
M24SR02-YSG12I/2 from STMicroelectronics is a dynamic NFC/RFID tag IC with dual I²C and contactless interfaces, embedding 2-Kbit EEPROM compliant with NFC Forum Type 4 Tag and ISO/IEC 14443 Type A standards. It operates from 2.7 V to 5.5 V, supports 1 MHz I²C, features 7-byte UID and 128-bit password protection, and enables secure NDEF data exchange in smart labels and IoT edge nodes.
For engineers reviewing the M24SR02-YSG12I/2 datasheet, M24SR02-YSG12I/2 pinout, M24SR02-YSG12I/2 application, or M24SR02-YSG12I/2 equivalent, this device serves as a secure, dual-interface memory node for NFC-enabled industrial tagging, asset authentication, and firmware-secure boot configuration in resource-constrained embedded systems.
Technical Context
The M24SR02-Y implements concurrent I²C slave and RF tag operation via session arbitration-supporting independent I²C read/write (up to 246 bytes per command) and RF NDEF messaging (106 Kbps, ISO/IEC 7816-4 compatible). Its internal tuning capacitance (25 pF) eliminates external matching components for antenna integration.
It features configurable GPO with seven functional modes-including RF busy indication, I²C answer ready, and interrupt signaling-and RF disable control for deterministic power management. Memory access enforces hierarchical protection: UID, system file, CC file, and NDEF file each support distinct read/write permissions governed by 128-bit passwords.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C interface | Two-wire slave interface supporting 1 MHz protocol; enables direct microcontroller attachment without level-shifting or bus arbitration logic. |
| Contactless interface | NFC Forum Type 4 Tag + ISO/IEC 14443 Type A; interoperable with all standard NFC phones and readers at 106 Kbps. |
| EEPROM capacity | 256-byte (2-kbit) user memory with NDEF structure support; sufficient for full firmware hash, device certificate, or multi-record sensor metadata. |
| Data retention | 200 years at 25 °C; ensures long-term integrity of calibration data, serial numbers, or cryptographic keys in unpowered storage. |
| Write endurance | 1 million cycles at 25 °C; supports frequent field updates such as usage counters, event logs, or OTA configuration patches. |
| Operating temperature | –40 °C to +85 °C; qualified for industrial automation, automotive under-hood tagging, and outdoor smart infrastructure. |
| Supply voltage | 2.7 V to 5.5 V; compatible with both 3.3 V and 5 V host systems without external regulators. |
Pinout & Package
Available in three ECOPACK2-compliant packages: SO8 (SO8N), TSSOP8, and UFDFPN8. Pin functions are identical across variants; physical layout differs only in footprint and thermal characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary I²C interface supply; powers internal logic, EEPROM, and RF front-end; accepts 2.7–5.5 V. |
| VSS | Ground reference | Common return path for I²C signals and RF coil bias; requires low-impedance PCB connection to minimize noise coupling. |
| SCL | I²C clock input | Master-generated clock line; supports up to 1 MHz; internally pulled up when RF mode active to prevent bus contention. |
| SDA | I²C bidirectional data | Open-drain I²C data line; shares bus with other slaves; includes internal pull-up enabling hot-plug detection. |
| AC0 / AC1 | RF antenna interface | Differential 13.56 MHz antenna connection points; integrated 25 pF tuning capacitance reduces BOM count and layout sensitivity. |
| RF_DISABLE | RF interface enable control | Active-low digital input; disables RF state machine and antenna driver to eliminate unintended tag activation during I²C transactions. |
| GPO | Configurable general-purpose output | Programmable open-drain output signaling RF busy, I²C readiness, WIP status, or interrupt events per register-defined mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-interface session arbitration | Hardware-enforced mutual exclusion between I²C and RF access prevents memory corruption during concurrent operations. |
| NDEF-compliant memory mapping | Predefined CC and NDEF file layout enables plug-and-play compatibility with Android NFC apps and NFC reader SDKs. |
| 7-byte unique identifier (UID) | Factory-programmed, read-only UID provides tamper-resistant device identity for secure provisioning and anti-cloning. |
| 128-bit password protection | Separate passwords for NDEF read, NDEF write, and I²C access enable granular security policies per application layer. |
| GPO configurability | Seven GPO modes-including RF busy, I²C answer ready, and interrupt-eliminate need for external GPIO monitoring logic. |
Applications
| Smart Industrial Labels | Secure Firmware Configuration |
|---|---|
|
Use Scenario: Asset tags on factory floor equipment store calibration history, maintenance logs, and operator credentials accessible via NFC phone scan. IC Role / Device Role / Timing Role: Dual-interface EEPROM acting as trusted data vault; I²C writes new logs during operation, RF reads diagnostics during audits. Use Value: Eliminates manual data entry errors and enables offline audit trails with cryptographic integrity verified via NDEF signature fields. |
Use Scenario: Embedded controller reads boot configuration (e.g., secure boot policy, key slot selection) from M24SR02-Y at power-on before loading firmware. IC Role / Device Role / Timing Role: Secure non-volatile configuration store; I²C interface provides deterministic timing for early-boot initialization sequence. Use Value: Prevents unauthorized boot parameter modification; password-protected write access ensures only authenticated tools can update settings. |
| Medical Device Authentication | Consumer Electronics Pairing Token |
|
Use Scenario: Disposable medical sensors embed M24SR02-Y to store batch ID, sterilization timestamp, and usage counter readable by hospital NFC scanners. IC Role / Device Role / Timing Role: Tamper-evident data carrier with UID-based binding to cloud records; RF interface enables rapid batch verification without wired connection. Use Value: Supports FDA UDI compliance; 200-year data retention guarantees traceability over product lifetime and regulatory review cycles. |
Use Scenario: Wireless earbuds use M24SR02-Y to store Bluetooth address, pairing keys, and firmware version; NFC tap initiates auto-pairing with smartphone. IC Role / Device Role / Timing Role: NFC-triggered configuration source; RF mode activates on proximity, then I²C delivers keys to Bluetooth SoC within <100 ms. Use Value: Enables one-tap setup without app installation; GPO signal notifies SoC when NDEF payload is ready for parsing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dynamic NFC tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXH3670UK/N1 | Integrated NFC controller + secure element; no I²C EEPROM interface; requires external flash for NDEF storage. | Targeted at high-security payment terminals; lacks dual-interface flexibility for local I²C host control. | Select when end-to-end CC EAL5+ certification is required and host MCU handles NDEF formatting. |
| NT3H2111W0FHKH | 1-Kbyte EEPROM; supports I²C but no RF disable pin; GPO limited to RF busy only; lower write endurance (100k cycles). | Suitable for cost-sensitive consumer tags where full 2-kbit capacity and industrial write cycles are unnecessary. | Choose for high-volume retail labels where simplified feature set reduces BOM cost and layout complexity. |
Compared with NXH3670UK/N1 and NT3H2111W0FHKH, the M24SR02-YSG12I/2 uniquely balances I²C-hosted memory control, RF interoperability, and industrial-grade endurance-making it optimal for designs requiring local firmware coordination alongside NFC user interaction.
Availability
M24SR02-YSG12I/2 is available at Aetrix Electronics and suitable for smart industrial labels, secure firmware configuration, and medical device authentication requiring stable component supply across extended product lifecycles.
Supply support for M24SR02-YSG12I/2 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 specializing in microcontrollers, power management, and secure connectivity solutions for industrial, automotive, and IoT markets.
The M24SR02-Y belongs to the ST25 NFC/RFID product line, engineered specifically for dual-interface secure data exchange between embedded hosts and NFC mobile devices in space-constrained, battery-free, or low-power environments.
FAQ
Does M24SR02-YSG12I/2 require external tuning capacitors for its RF interface?
No. The device integrates 25 pF internal tuning capacitance across AC0/AC1 pins, eliminating the need for external capacitors in most antenna designs. This simplifies PCB layout and improves RF performance consistency across manufacturing batches, though antenna impedance matching should still be validated per EN 300 330.
How does the RF_DISABLE pin affect I²C operation?
The RF_DISABLE pin is an active-low input that disables the RF state machine and antenna driver when asserted. It has no effect on I²C functionality-SCL and SDA remain fully operational regardless of RF_DISABLE state, enabling safe concurrent I²C access during RF-inactive periods.
Can the 7-byte UID be overwritten or reprogrammed?
No. The 7-byte UID is factory-programmed, one-time-write, and permanently read-only. It cannot be altered, erased, or duplicated-even with valid passwords-ensuring cryptographically verifiable device uniqueness for anti-counterfeiting and secure provisioning workflows.
What is the maximum NDEF message size supported?
The M24SR02-Y supports a single NDEF file up to 246 bytes in length, constrained by the maximum payload size of its UpdateBinary command. Total usable NDEF capacity is reduced by CC file overhead (16 bytes) and system file allocation (32 bytes), yielding ~198 bytes of application payload space.
M24SR02-YSG12I/2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443, NFC
- Interface:
- I2C
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
M24SR02-YSG12I/2 FAQ
1.How can I place an order for M24SR02-YSG12I/2 through Aetrix?
Please submit a Request for Quotation (RFQ) for M24SR02-YSG12I/2 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 M24SR02-YSG12I/2 reliable?
The price and inventory of M24SR02-YSG12I/2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24SR02-YSG12I/2 is usually 5 days.
3.What payment methods are accepted for M24SR02-YSG12I/2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24SR02-YSG12I/2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24SR02-YSG12I/2?
M24SR02-YSG12I/2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24SR02-YSG12I/2 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 M24SR02-YSG12I/2?
For technical support, including M24SR02-YSG12I/2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24SR02-YSG12I/2 requirements.
6.How does Aetrix verify that M24SR02-YSG12I/2 is sourced from the original manufacturer or authorized distributors?
All M24SR02-YSG12I/2 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 M24SR02-YSG12I/2 meets industry standards.
7.What is the process for return or replacement of M24SR02-YSG12I/2?
All M24SR02-YSG12I/2 units undergo pre-shipment inspection (PSI). If there is an issue with M24SR02-YSG12I/2, 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 M24SR02-YSG12I/2 part is unused and in its original packaging.
Return procedure for M24SR02-YSG12I/2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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