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NXP Semiconductors PN7161A1EV/C100K
- Part No.:
- PN7161A1EV/C100K
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 64-VFBGA
- Datasheet:
-
PN7161A1EV/C100K.pdf
- Description:
- IC NFC CONTROLLER I2C VFBGA64
- Quantity:
- Payment:
- Shipping:
Inventory:1,737
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Product details
Overview
PN7161A1EV/C100K from NXP Semiconductors is a Near Field Communication (NFC) controller IC with integrated NCI 2.0 interface, firmware version 12.50.05, and VFBGA64 package. It supports ISO/IEC 14443A/B, ISO/IEC 15693, MIFARE, FeliCa, and NFC Forum T4T/T5T protocols, delivers 1.3 W transmitter output power, and enables autonomous card emulation during host shutdown - used in mobile handsets and wearable devices for secure contactless transactions.
For engineers reviewing the PN7161A1EV/C100K datasheet, PN7161A1EV/C100K pinout, PN7161A1EV/C100K application, or PN7161A1EV/C100K equivalent, key selection criteria include ECP support for Apple ecosystem compliance, I²C host interface compatibility, low-power polling loop operation (<100 µA), and VFBGA64 footprint constraints for space-constrained portable designs.
Technical Context
The PN7161A1EV/C100K implements an ARM Cortex-M0 core with 128 kB ROM, 28 kB EEPROM, and 8 kB SRAM, executing NXP's proprietary NFC stack under NCI 2.0 protocol abstraction. Its RF front-end integrates dynamic power control, enhanced DLMA, and independent 5° LMA phase adjustment per Type A/B/F to maximize field sensitivity (20 mVp-p card mode) and range in compact antenna layouts.
It operates across 2.8–5.5 V battery supply and supports three system power modes: Full Power (host active), Autonomous (host off, card emulation only), and Low-Power (VBAT only, wake-up via RF field or timer). Firmware version 12.50.05 enables ECP for Apple devices but excludes P2P functionality per design specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Supply Range | 2.8 V to 5.5 V - enables direct connection to single-cell Li-ion or USB-powered rails without external regulators. |
| Transmitter Output Power | 1.3 W - supports high-field-strength reader mode operation compliant with ISO/IEC 14443 limits at 0 mm distance. |
| Card Mode Sensitivity | 20 mVp-p - ensures reliable detection of weakly coupled or small-form-factor NFC tags and cards. |
| Low-Power Polling Current | 100 µA @ 500 ms loop - sustains multi-hour background discovery in wearables and IoT edge nodes. |
| Firmware Version | 12.50.05 - includes ECP support for Apple devices and T4T NDEF write from RF side; excludes P2P and Type-F card mode. |
| Host Interface | I²C-bus High-Speed mode - simplifies integration with application processors using standard NCI 2.0 command/response framing. |
| Package | VFBGA64 (SOT1860-1), 3.5 × 3.5 × 0.5 mm - provides minimal PCB footprint for ultra-thin mobile and wearable form factors. |
Pinout & Package
VFBGA64 package (SOT1860-1) with 0.4 mm ball pitch, bottom-side thermal pad, and RoHS-compliant dark green marking (D indicator). Requires controlled impedance routing for ANT1/ANT2 and strict decoupling on VDD(TX), VDD(UP), and VDD(PAD).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VEN | Hard Power Down Control | Active-low reset input; pulls device into Power Off mode when <0.4 V - enables host-controlled deep sleep entry/exit. |
| IRQ | Interrupt Request Output | Open-drain signal indicating RF event, firmware notification, or error condition - requires external pull-up for host wake-up. |
| I2C_SDA / I2C_SCL | I²C Data / Clock | NCI 2.0 transport layer pins; operate up to 3.4 MHz High-Speed mode - compatible with standard I²C controllers without bit-banging. |
| ANT1 / ANT2 | Antenna Differential Outputs | Drive balanced NFC antenna; support wake-up detection even in Standby state - eliminates need for separate RF detector circuitry. |
| VBAT / VBAT2 | Battery Supply Inputs | Redundant VBAT connections ensure stable RF power delivery; must be tied together externally with low-ESR bulk capacitance. |
| VDD(TX) | Transmitter Supply Rail | 2.7–5.25 V input for RF power amplifier - enables higher output power than VDD(UP)-derived supplies, critical for long-range reader operation. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced Contactless Polling (ECP) | Apple-authorized polling enhancement enabling faster tag discovery and reduced latency in iOS-compatible accessories - requires formal Apple authorization. |
| Autonomous Card Emulation | Full NDEF-based card emulation (T4T) while host processor is powered down - maintains payment/ID functionality during system sleep without host intervention. |
| Integrated Power Management Unit | Supports Hard Power Down (10.5 µA), Standby (32–52 µA), and low-power polling loop (100 µA) - eliminates need for external PMIC in battery-operated designs. |
| Dynamic Load Modulation Amplitude (DLMA) | Real-time LMA optimization based on external field strength - extends effective communication range in card mode by up to 30% versus fixed-LMA solutions. |
| On-Chip RF Level Detector | Enables automatic wake-up from Standby on RF field presence - removes dependency on external comparators or discrete RF sensing components. |
Applications
| Smartphone Secure Element Interface | Wearable Payment Terminal |
|---|---|
|
Use Scenario: Integration into flagship Android smartphones as companion NFC controller to offload NCI protocol handling from AP. IC Role / Device Role / Timing Role: Dedicated NFC controller managing RF analog front-end, NCI transport, and firmware-executed stack - relieves AP of real-time timing-critical NFC tasks. Use Value: Enables simultaneous card emulation and reader operation with deterministic latency, supporting tap-to-pay and transit ticketing without AP wake-up overhead. |
Use Scenario: Embedded in wrist-worn fitness trackers enabling contactless transit pass validation and loyalty redemption. IC Role / Device Role / Timing Role: Autonomous NFC controller operating in Standby mode with RF-triggered wake-up - maintains sub-100 µA average current draw during idle periods. Use Value: Delivers >7-day battery life in always-on NFC mode using only internal LDOs and no external DC-DC converter. |
| Smart Home Gateway Access Control | Industrial Asset Tag Reader |
|
Use Scenario: Installed in Wi-Fi/Zigbee home hubs to authenticate NFC-enabled door locks, smart keys, and access badges. IC Role / Device Role / Timing Role: Reader/writer controller interfacing with host MCU via I²C - handles ISO/IEC 14443A/B and MIFARE DESFire authentication sequences. Use Value: Supports encrypted NDEF message exchange and mutual authentication without exposing cryptographic keys to host software stack. |
Use Scenario: Mounted on handheld maintenance tools for reading ISO/IEC 15693 asset tags on factory equipment and machinery. IC Role / Device Role / Timing Role: High-sensitivity passive reader operating at 13.56 MHz with dynamic power control - adapts output to varying tag distances and metal interference. Use Value: Achieves >15 cm read range on ICODE SLI-X tags using compact 30 × 30 mm PCB antenna, eliminating need for external RF amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PN7160A1EV/C100K | Lacks ECP support; identical pinout, firmware 12.50.05, same VFBGA64 package and I²C interface. | Not suitable for Apple ecosystem integration; otherwise functionally interchangeable in non-ECP reader/card use cases. | Select when ECP is not required and cost sensitivity outweighs future ecosystem flexibility. |
| ST25DV04K-IER | Dynamic NFC tag IC (not controller); no host interface, no NCI stack, EEPROM-based NDEF storage only. | Used as passive endpoint (e.g., product label), not as active reader/emulator - cannot replace PN7161A1EV/C100K in host-controlled systems. | Choose only for static NFC tag applications requiring RF-writable memory, not for bidirectional controller functions. |
Compared with PN7160A1EV/C100K, PN7161A1EV/C100K adds ECP capability for Apple-certified accessories but shares identical power, RF, and interface specs; ST25DV04K-IER serves a fundamentally different role as a passive tag IC and cannot execute NCI commands or drive antennas.
Availability
PN7161A1EV/C100K is available at Aetrix Electronics and suitable for smartphone design, wearable electronics, smart home gateways, and industrial asset tracking requiring stable component supply and long-term lifecycle support.
Supply support for PN7161A1EV/C100K 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and consumer markets, with over 20 years of NFC innovation.
PN7161A1EV/C100K belongs to NXP's PN716x NFC controller family, designed specifically for space-constrained, battery-powered mobile and wearable devices requiring certified, low-power, standards-compliant contactless communication.
FAQ
What is the primary function of the PN7161A1EV/C100K in a mobile system?
The PN7161A1EV/C100K serves as a dedicated Near Field Communication (NFC) controller IC that manages all RF analog front-end operations, executes the NCI 2.0 protocol stack, and handles ISO/IEC 14443, ISO/IEC 15693, MIFARE, and FeliCa communications. In mobile systems, PN7161A1EV/C100K offloads time-critical NFC processing from the main application processor, enabling secure tap-to-pay, transit ticketing, and peer-to-peer data exchange while maintaining ultra-low power consumption in standby states.
Does the PN7161A1EV/C100K support Apple's Enhanced Contactless Polling (ECP)?
Yes, the PN7161A1EV/C100K supports Enhanced Contactless Polling (ECP) as defined by Apple, but this feature requires formal authorization from Apple and is only enabled in firmware versions 12.50.05 and later. The PN7161A1EV/C100K is distinguished from the PN7160 series by its model ID (0x71), which signals ECP capability to authorized host firmware - it is not functional without Apple's certification process.
What package type and footprint does the PN7161A1EV/C100K use?
The PN7161A1EV/C100K uses the VFBGA64 (SOT1860-1) package: a 3.5 mm × 3.5 mm × 0.5 mm very thin fine-pitch ball grid array with 64 solder balls arranged in an 8×8 array and a 0.4 mm pitch. This package includes an exposed thermal pad on the bottom for improved heat dissipation and is optimized for high-density portable PCB layouts where board space is constrained.
Can the PN7161A1EV/C100K operate without the host processor powered on?
Yes, the PN7161A1EV/C100K supports Autonomous mode, allowing full NFC card emulation (T4T) while the host processor remains powered down. In this mode, the IC draws current only from VBAT, monitors RF field activity via ANT1/ANT2, and responds to contactless readers using its internal firmware and 28 kB EEPROM-stored NDEF data - enabling features like offline transit passes or secure ID emulation without host involvement.
What host interface options are supported by the PN7161A1EV/C100K?
The PN7161A1EV/C100K supports I²C-bus High-Speed mode (up to 3.4 MHz) as indicated by the "A" in its part number suffix (PN7161A1EV/C100K). It does not support SPI - that variant is designated with "B" (e.g., PN7161B1EV/C100K). The I²C interface implements the NFC Forum NCI 2.0 logical protocol, enabling standardized command/response messaging between host and controller without custom driver development.
PN7161A1EV/C100K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 64-VFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- RFID Reader
- Frequency:
- 13.56MHz
- Standards:
- FeliCa, ISO 14443, ISO 15693, MIFARE, NFC
- Interface:
- I2C
- Voltage - Supply:
- 1.65V ~ 1.95V, 3V ~ 3.6V
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-VFBGA (4x4)
PN7161A1EV/C100K FAQ
1.How can I place an order for PN7161A1EV/C100K through Aetrix?
Please submit a Request for Quotation (RFQ) for PN7161A1EV/C100K 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 PN7161A1EV/C100K reliable?
The price and inventory of PN7161A1EV/C100K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PN7161A1EV/C100K is usually 5 days.
3.What payment methods are accepted for PN7161A1EV/C100K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PN7161A1EV/C100K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PN7161A1EV/C100K?
PN7161A1EV/C100K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PN7161A1EV/C100K 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 PN7161A1EV/C100K?
For technical support, including PN7161A1EV/C100K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PN7161A1EV/C100K requirements.
6.How does Aetrix verify that PN7161A1EV/C100K is sourced from the original manufacturer or authorized distributors?
All PN7161A1EV/C100K 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 PN7161A1EV/C100K meets industry standards.
7.What is the process for return or replacement of PN7161A1EV/C100K?
All PN7161A1EV/C100K units undergo pre-shipment inspection (PSI). If there is an issue with PN7161A1EV/C100K, 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 PN7161A1EV/C100K part is unused and in its original packaging.
Return procedure for PN7161A1EV/C100K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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