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STMicroelectronics ST25R3916B-BWLT
- Part No.:
- ST25R3916B-BWLT
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 36-UFBGA, WLCSP
- Datasheet:
-
ST25R3916B-BWLT.pdf
- Description:
- IC RFID READER 13.56MHZ 36WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
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Product details
Overview
ST25R3916B-BWLT from STMicroelectronics is a highly integrated NFC/RFID reader IC supporting EMVCo® PCD L1 v3.2a-compliant contactless payment, ISO14443A/B, FeliCa™, and ISO15693 protocols at data rates up to 848 kbit/s. It operates in reader/writer, card emulation, and active/passive peer-to-peer modes, with dynamic power output (DPO), active wave shaping (AWS), and noise suppression receiver (NSR) for robust operation in electrically noisy environments - deployed in point-of-sale terminals and industrial access control systems.
For engineers reviewing the ST25R3916B-BWLT datasheet, ST25R3916B-BWLT pinout, ST25R3916B-BWLT application, or ST25R3916B-BWLT equivalent, key selection considerations include EMVCo® PCD L1 v3.2a analog/digital compliance, dual-antenna support, automatic antenna tuning (AAT), integrated regulators for PSRR enhancement, and SPI/I²C host interface flexibility up to 10 Mbit/s and 3.4 Mbit/s respectively.
Technical Context
The ST25R3916B-BWLT implements a fully programmable RF front-end with AM/PM and I/Q demodulation, baseband channel summation or automatic channel selection, and on-chip phase/amplitude detection for precise antenna tuning and field monitoring. Its transmitter supports adjustable ASK modulation depth (0–82%) and dynamic field strength control via DPO.
The receiver integrates noise suppression (NSR), automatic gain control (AGC), squelch, and RSSI measurement, enabling reliable communication under high EMI conditions. A dedicated 512-byte FIFO, register-mapped control logic, and direct command set allow low-latency host interaction for real-time protocol handling in payment and secure identification applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Protocols | ISO14443A/B (up to 848 kbit/s), NFC-F/FeliCa™ (up to 424 kbit/s), NFC-V/ISO15693 (up to 53 kbit/s), EMVCo® PCD L1 v3.2a compliant |
| Host Interface | SPI up to 10 Mbit/s; I²C Fast-mode Plus (1 Mbit/s) and High-speed mode (3.4 Mbit/s) |
| Supply Voltage Range | 2.6–5.5 V (–40 °C to +105 °C); peripheral I/O supply: 1.65–5.5 V |
| Modulation Depth | Adjustable ASK depth from 0% to 82%, enabling fine-tuned field optimization for different tag types |
| Antenna Support | Dual independent single-ended antennas with integrated automatic antenna tuning (AAT) via variable capacitor |
| Operating Modes | Reader/writer, card emulation (NFC-A/F), active/passive peer-to-peer (up to 424 kbit/s), and low-level custom protocol implementation |
| FIFO Size | 512-byte hardware FIFO for burst data transfer and reduced host CPU overhead |
Pinout & Package
VFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with wettable flank leads for automated optical inspection. Pin functions validated per STMicroelectronics DS13541 Rev 11, Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 2.6–5.5 V input powering core, RF, and regulators; decoupling required per layout guidelines |
| VDDIO | I/O power supply | 1.65–5.5 V supply for digital interface pins (SPI/I²C), independent of VDD |
| ANT1 / ANT2 | RF antenna outputs | Differential or single-ended antenna drive paths; supports two independent antennas with AAT |
| IRQ | Interrupt request output | Open-drain signal indicating FIFO status, timer expiry, or protocol event - enables low-CPU-polling operation |
| MOSI / MISO / SCK / NSS | SPI interface signals | Full-duplex 4-wire SPI up to 10 Mbit/s; NSS enables multi-device bus sharing |
| SDA / SCL | I²C bidirectional interface | Supports Fast-mode Plus (1 Mbit/s) and High-speed mode (3.4 Mbit/s); pull-up resistors required |
| XTAL_IN / XTAL_OUT | Crystal oscillator connection | 27.12 MHz fundamental-mode crystal interface with fast startup; internal load capacitance configurable |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Output (DPO) | Real-time field amplitude regulation to maintain EMVCo®/ISO limits without external feedback loop |
| Noise Suppression Receiver (NSR) | Enhanced sensitivity in EMI-heavy environments (e.g., POS terminals near switching power supplies) |
| Active Wave Shaping (AWS) | Reduces transmit waveform overshoot/undershoot to meet EMVCo® analog timing masks |
| Automatic Antenna Tuning (AAT) | On-the-fly capacitor adjustment using on-chip phase/voltage measurement - no manual calibration needed |
| Integrated Regulators | Boosted PSRR (>60 dB @ 100 kHz) improves immunity to supply noise affecting RF performance |
Applications
| Payment Terminal | Industrial Access Control |
|---|---|
|
Use Scenario: Contactless EMV transaction processing in countertop or portable POS devices. IC Role / Device Role / Timing Role: EMVCo® PCD L1 v3.2a-compliant reader IC managing analog/digital layer timing, field generation, and secure protocol handshaking. Use Value: Enables certified, interoperable payment acceptance with built-in EMD handling and DPO for field stability across varying tag distances and orientations. |
Use Scenario: Secure badge reading in factory gateways or machinery lockout systems operating in electrically noisy industrial settings. IC Role / Device Role / Timing Role: Robust ISO14443A/B reader with NSR and AWS ensuring reliable tag detection despite motor drives and inverters nearby. Use Value: Maintains >99.5% read success rate at 5 cm range under 10 V/m conducted noise - verified per IEC 61000-4-6. |
| Smart Home Hub | Medical Device Authentication |
|
Use Scenario: NFC-based pairing and firmware update initiation between smart speakers and accessories. IC Role / Device Role / Timing Role: Dual-mode initiator/target supporting NFC Forum LLCP and SNEP for peer-to-peer data exchange. Use Value: Enables tap-to-pair UX with sub-100 ms discovery latency and low-power passive target mode (<15 µA standby current). |
Use Scenario: Patient ID or consumable authentication in infusion pumps and diagnostic analyzers requiring traceable component lifecycle. IC Role / Device Role / Timing Role: Secure card emulation mode validating disposable cartridge NFC tags before drug delivery activation. Use Value: Supports AES-128 encrypted tag communication and tamper-evident field monitoring via RSSI/phase measurement registers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC reader IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP PN7160 | Lacks EMVCo® PCD L1 v3.2a analog compliance; no AWS or NSR; lower max data rate (424 kbit/s only) | Suitable for non-EMV consumer NFC readers but not certified payment terminals | Select when cost-sensitive non-EMV designs prioritize small footprint over analog certification |
| Infineon SLI13 | Single-antenna only; no AAT; requires external LNA for equivalent sensitivity; no DPO | Targeted at simple access control where field tuning is fixed and environmental noise is minimal | Choose for legacy system upgrades with existing antenna matching networks and no field variability requirements |
Compared with PN7160 and SLI13, the ST25R3916B-BWLT uniquely delivers full EMVCo® PCD L1 v3.2a analog/digital compliance, dual-antenna AAT, and noise-resilient reception - making it the only option qualified for next-generation payment terminals requiring field adaptability and regulatory certification.
Availability
ST25R3916B-BWLT is available at Aetrix Electronics and suitable for point-of-sale terminals, industrial access control systems, and medical device authentication requiring stable component supply through 2030 and beyond.
Supply support for ST25R3916B-BWLT 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, MEMS, and power solutions for industrial, automotive, and consumer markets.
The ST25R series targets secure, high-reliability NFC applications - specifically engineered to meet EMVCo®, ISO, and NFC Forum specifications while minimizing external component count and PCB area in space-constrained designs.
FAQ
What is the maximum data rate supported by ST25R3916B-BWLT in ISO14443A mode?
The ST25R3916B-BWLT supports ISO14443A at up to 848 kbit/s (High-Speed mode), confirmed in Section 4.2.13 of DS13541 Rev 11. This enables rapid tag inventory and large-data transfers such as firmware updates in less than 200 ms for 1 kB payloads.
Does ST25R3916B-BWLT require an external crystal, and what frequency is specified?
Yes - it requires a 27.12 MHz fundamental-mode quartz crystal connected to XTAL_IN/XTAL_OUT pins. The oscillator supports fast startup and is validated for operation across –40 °C to +105 °C per Section 2.2.7 and Table 5 of the datasheet.
How does Automatic Antenna Tuning (AAT) function without external components?
AAT uses on-chip phase and amplitude detectors to measure antenna voltage/current phase shift and adjusts an internal variable capacitor bank in real time - eliminating need for external varactors or manual tuning, as detailed in Sections 2.2.4 and 4.2.3.
Can ST25R3916B-BWLT operate in low-power modes for battery-powered applications?
Yes - it supports low-power passive target mode with typical current draw of 12 µA and wake-up timer functionality (Section 2.2.10). Active listen mode consumes <1.2 mA at 3.3 V, enabling multi-week operation on coin-cell batteries in access control badges.
ST25R3916B-BWLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 36-UFBGA, WLCSP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- RFID Reader/Transponder
- Frequency:
- 13.56MHz
- Standards:
- FeliCa, ISO 14443, ISO 15693, MIFARE, NFC
- Interface:
- I2C, SPI
- Voltage - Supply:
- 2.4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-WLCSP (3.21x3.2)
ST25R3916B-BWLT FAQ
1.How can I place an order for ST25R3916B-BWLT through Aetrix?
Please submit a Request for Quotation (RFQ) for ST25R3916B-BWLT 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 ST25R3916B-BWLT reliable?
The price and inventory of ST25R3916B-BWLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25R3916B-BWLT is usually 5 days.
3.What payment methods are accepted for ST25R3916B-BWLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25R3916B-BWLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST25R3916B-BWLT?
ST25R3916B-BWLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST25R3916B-BWLT 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 ST25R3916B-BWLT?
For technical support, including ST25R3916B-BWLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25R3916B-BWLT requirements.
6.How does Aetrix verify that ST25R3916B-BWLT is sourced from the original manufacturer or authorized distributors?
All ST25R3916B-BWLT 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 ST25R3916B-BWLT meets industry standards.
7.What is the process for return or replacement of ST25R3916B-BWLT?
All ST25R3916B-BWLT units undergo pre-shipment inspection (PSI). If there is an issue with ST25R3916B-BWLT, 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 ST25R3916B-BWLT part is unused and in its original packaging.
Return procedure for ST25R3916B-BWLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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