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STMicroelectronics M24SR64-YSG12I/2
- Part No.:
- M24SR64-YSG12I/2
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
M24SR64-YSG12I/2.pdf
- Description:
- MEMORY
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
M24SR64-YSG12I/2 from STMicroelectronics is a dynamic NFC/RFID tag IC with dual-interface operation (I²C + 13.56 MHz RF), 64-Kbit EEPROM, NFC Forum Type 4 Tag compliance, and ISO/IEC 14443 Type A support. It enables secure NDEF data exchange in contactless smart labels for industrial asset tagging and IoT device provisioning.
For engineers reviewing the M24SR64-YSG12I/2 datasheet, M24SR64-YSG12I/2 pinout, M24SR64-YSG12I/2 application, or M24SR64-YSG12I/2 equivalent, this device serves as a secure, field-upgradable memory node in battery-free or low-power embedded systems requiring simultaneous wired I²C access and wireless NFC interrogation.
Technical Context
The M24SR64-Y operates in three functional modes: I²C-only, RF-only, or dual-interface mode where I²C and RF sessions are mutually exclusive but coordinated via session tokens. Its RF interface implements full NFC Forum Type 4 Tag protocol stack including CC file handling, NDEF message management, and ISO/IEC 7816-4 command support.
I²C communication uses standard two-wire slave protocol at up to 1 MHz, with configurable device address and built-in watchdog timeout. The RF interface integrates internal 25 pF tuning capacitance, supports 106 Kbps data rate, and features hardware-level RF disable control and GPO signaling for session state indication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 64-Kbit (8-Kbyte) EEPROM with NDEF data structure support and 7-byte UID |
| I²C interface speed | Up to 1 MHz - enables fast host MCU read/write without bus contention in real-time systems |
| Supply voltage range | 2.7 V to 5.5 V - compatible with common microcontroller I/O rails and industrial power domains |
| Data retention | 200 years at 25 °C - ensures long-term firmware or calibration data integrity in unpowered deployments |
| Write endurance | 1 million cycles at 25 °C; 600k at 85 °C; 500k at 105 °C - validated for repeated field updates in thermal cycling environments |
| RF protocol compliance | NFC Forum Type 4 Tag + ISO/IEC 14443 Type A - guarantees interoperability with all certified NFC smartphones and readers |
| Operating temperature | I²C: −40 °C to +105 °C; RF: −40 °C to +85 °C - supports deployment in automotive under-hood and industrial edge nodes |
Pinout & Package
Package: 8-lead TSSOP8 (ECOPACK2®), also available in SO8 and UFDFPN8 variants per ordering code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Single 2.7–5.5 V rail powers both I²C logic and RF analog circuitry |
| VSS | Ground reference | Common return path for digital and RF sections; requires low-impedance PCB connection |
| SCL | I²C clock input | Master-generated clock synchronizing bidirectional SDA transfers up to 1 MHz |
| SDA | I²C bidirectional data line | Open-drain interface supporting multi-master arbitration and standard pull-up requirements |
| AC0 / AC1 | RF antenna connection | Differential terminals for direct coupling to 13.56 MHz loop antenna; internal 25 pF tuning reduces external component count |
| RF_DISABLE | RF interface enable/disable control | Active-low signal disables RF detection and response, preventing unintended NFC reads during I²C operations |
| GPO | Configurable general-purpose output | Programmable to indicate Session Open, WIP, I²C answer ready, RF busy, or INT states per GPO field configuration |
Key Features
| Feature | Design Value |
|---|---|
| Dual-interface session arbitration | Hardware-enforced mutual exclusion between I²C and RF sessions prevents memory corruption during concurrent access |
| Secure NDEF management | 128-bit password protection for NDEF files plus separate I²C password enables tiered access control for OEM and end-user data |
| Extended memory access | Read/write up to 246 bytes per command - reduces transaction overhead for large firmware patches or sensor logs |
| GPO state signaling | Seven configurable GPO modes provide real-time hardware status feedback without polling, lowering host MCU latency |
| ECOPACK2® packaging | TSSOP8, SO8, and UFDFPN8 options meet RoHS, halogen-free, and lead-free requirements for global industrial compliance |
Applications
| Industrial Asset Tagging | Smart Medical Device Labeling |
|---|---|
|
Use Scenario: Permanent attachment to CNC machine tools or PLC cabinets for maintenance history, calibration records, and firmware version tracking. IC Role / Device Role / Timing Role: Dual-interface EEPROM storing NDEF-encoded service logs; updated via handheld NFC reader or factory floor I²C programmer. Use Value: Eliminates manual barcode scanning and paper-based logs; enables authenticated, tamper-resistant updates without disassembly. |
Use Scenario: Sterilizable label on infusion pumps or diagnostic analyzers containing device ID, regulatory certificates, and usage counters. IC Role / Device Role / Timing Role: Secure NDEF container with password-protected fields; accessed by hospital NFC tablets during pre-use verification. Use Value: Ensures traceability across sterilization cycles; prevents unauthorized parameter changes via hardware-level write protection. |
| IoT Edge Node Provisioning | Automotive Aftermarket Sensors |
|
Use Scenario: Embedded in gateway modules to store unique credentials, network keys, and OTA update manifests before field deployment. IC Role / Device Role / Timing Role: Boot-time I²C-read credential source; later reconfigured via NFC for customer-specific settings during installation. Use Value: Decouples manufacturing programming from final configuration; supports just-in-time personalization without rework. |
Use Scenario: Integrated into tire pressure sensors or cabin air quality modules for model-specific calibration data and production date stamps. IC Role / Device Role / Timing Role: RF-accessible memory holding ECU-compatible calibration tables; updated wirelessly during dealer service events. Use Value: Enables post-production calibration adjustments without sensor replacement; maintains ASIL-B compatible data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dynamic NFC tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24SR64-YDW6T/2 | Same die, UFDFPN8 package (2.0 × 2.0 mm) vs. TSSOP8 (3.0 × 4.4 mm); identical electrical specs and command set | Better suited for space-constrained PCBs where footprint reduction outweighs hand-soldering difficulty | Select when board area is critical and reflow assembly is used; verify antenna layout compatibility with smaller pad pitch |
| M24SR16-YMG6T/2 | 16-Kbit EEPROM (vs. 64-Kbit); same dual-interface architecture, I²C timing, RF protocol, and GPO functionality | Lower-cost option for simple NDEF payloads (e.g., static URLs or short IDs) without firmware storage needs | Choose when memory requirement is ≤2 Kbytes and BOM cost sensitivity exceeds scalability needs |
Compared with M24SR64-YSG12I/2, the UFDFPN8 variant saves 58% board area but requires tighter layout control, while the 16-Kbit version cuts cost by ~30% at the expense of NDEF payload depth and field-upgrade flexibility.
Availability
M24SR64-YSG12I/2 is available at Aetrix Electronics and suitable for industrial asset tagging, smart medical device labeling, IoT edge node provisioning, and automotive aftermarket sensors requiring stable component supply across extended product lifecycles.
Supply support for M24SR64-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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and connectivity solutions for industrial, automotive, and consumer markets.
The M24SR64-Y belongs to the ST25 NFC/RFID product line, engineered specifically for secure, dual-interface data exchange in resource-constrained embedded systems where battery-free operation and smartphone interoperability are essential.
FAQ
What is the maximum I²C clock frequency supported by M24SR64-YSG12I/2?
The device supports I²C communication up to 1 MHz, as specified in Section 11 of the datasheet. This high-speed mode allows efficient bulk data transfer during factory programming or field updates, and is fully compliant with standard I²C timing budgets including setup/hold times and rise/fall characteristics.
How does the RF_DISABLE pin function during dual-interface operation?
RF_DISABLE is an active-low input that permanently disables the RF interface when asserted, preventing any NFC interrogation regardless of antenna coupling. It does not affect I²C operation, enabling deterministic isolation of the contactless interface during critical I²C transactions or security-sensitive writes.
Can the GPO pin be used to trigger an interrupt on the host microcontroller?
Yes - when configured in INT mode (GPO field = 0xX4 or 0x4X), the GPO pin asserts low upon completion of an I²C command or RF session event, providing hardware-level notification without polling. This reduces host CPU load and improves system responsiveness in time-critical applications.
What is the minimum required antenna size for reliable RF operation at 13.56 MHz?
The datasheet does not specify a minimum antenna size, but recommends using a 4–6 cm² planar loop antenna tuned to 13.56 MHz with impedance matching to the AC0/AC1 differential input. Performance validation requires measuring field strength (>5 A/m) and modulation depth (>10%) per ISO/IEC 14443-2 at the intended operating distance.
M24SR64-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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
M24SR64-YSG12I/2 FAQ
1.How can I place an order for M24SR64-YSG12I/2 through Aetrix?
Please submit a Request for Quotation (RFQ) for M24SR64-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 M24SR64-YSG12I/2 reliable?
The price and inventory of M24SR64-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 M24SR64-YSG12I/2 is usually 5 days.
3.What payment methods are accepted for M24SR64-YSG12I/2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24SR64-YSG12I/2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M24SR64-YSG12I/2?
M24SR64-YSG12I/2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M24SR64-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 M24SR64-YSG12I/2?
For technical support, including M24SR64-YSG12I/2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24SR64-YSG12I/2 requirements.
6.How does Aetrix verify that M24SR64-YSG12I/2 is sourced from the original manufacturer or authorized distributors?
All M24SR64-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 M24SR64-YSG12I/2 meets industry standards.
7.What is the process for return or replacement of M24SR64-YSG12I/2?
All M24SR64-YSG12I/2 units undergo pre-shipment inspection (PSI). If there is an issue with M24SR64-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 M24SR64-YSG12I/2 part is unused and in its original packaging.
Return procedure for M24SR64-YSG12I/2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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