Renesas Electronics PTX205R NFC Controller

Renesas Electronics PTX205R NFC Controller is a highly integrated, mid-power NFC controller for NFC Forum applications. This NFC controller supports reader/writer, card emulation, and peer-to-peer modes. The PTX205R NFC controller offers a patented Switched-Capacitor Power Amplifier (SCPA) architecture, enabling a sine-wave driver that simplifies system integration. This NFC controller supports compact antenna designs and ensures best-in-class interoperability with existing NFC ecosystems. The PTX205R NFC controller provides a streamlined design that ensures real-time responsiveness while enabling implementation on cost-efficient host systems. Typical applications include smart locks, matter-hub devices, public transportation, air purifiers, toothbrushes, printers, gaming, and smart meters.

Features

  • RF communication:
    • ISO/IEC 14443-A/B reader/writer mode (up to 848kBit/s)
    • ISO18092 reader/writer mode (FeliCa™, 212/424kbit/s)
    • ISO/IEC 15693 reader/writer mode (up to 53kBit/s)
    • Supports reading/writing of NFC tag type 2/3/4A/4B/5
    • ISO/IEC 14443-A/B card emulation mode
    • ISO/IEC 18092-FeliCa card emulation mode
    • NFC Forum peer-to-peer (ISO 18092)
    • Initiator/target
    • NFC Forum certification compliant
  • Advanced features:
    • Low Power Card Detection (LPCD)
    • Low Power Field Detection (LPFD)
    • Digital Dynamic Power Control (DDPC)
    • Supports reading/writing of MIFARE® card family, including MIFARE Classic® (without crypto)
    • Supports Apple Enhanced Contactless Polling (ECP) (feature only available for customers with Apple formal authorization)
    • Transparent mode allowing implementation of customer protocols based on low-level commands (for example, B')
  • High-performance hardware:
    • SPI, I2C, I3C, and UART host interfaces
    • Efficient power transmission with accurate digital programmability of the output power, RF carrier amplitude, and modulation shape
    • Fractional-N PLL to support input clock frequency from 13.56MHz to 54.24MHz
  • Flexible software architecture:
    • SDK, composed of firmware and software integrated in a split-stack architecture, allows a complete firmware update from the host processor:
      • Modular SW stack running on the host architecture
      • FW running on the on-chip MCU for timing-critical operations
    • Product Support Library (PSL) with antenna diagnostic functions such as antenna tuning check
    • Reader Universal Library (RUL) SDK in C for easy integration into host controllers (for example, Windows®, Linux®, bare metal MCU, and RTOS)

Applications

  • Smart lock
  • Matter hub devices
  • Public transportation
  • Air purifiers
  • Toothbrushes
  • E-cigarette
  • Printers
  • Gaming
  • Smart meters
  • IoT and NFC reader
  • Access control
  • Wearable

Specifications

  • Absolute maximum ratings:
    • -0.5V to 6V VBAT, VDD_TX supply range
    • -0.5V to 3.8V VDDIO, SYS_EN supply range
    • 0.6W total power dissipation (PTOT) allowed in the chip
    • 50mA maximum supply current into VBAT
    • 550mA maximum supply current into VDD_TX
    • -50°C to +150°C storage temperature (Ts) range

Block Diagram

Block Diagram - Renesas Electronics PTX205R NFC Controller

Dimensions

Mechanical Drawing - Renesas Electronics PTX205R NFC Controller
Published: 2026-07-15 | Updated: 2026-07-26