Texas Instruments RF430CL330HIRGTR

Overview

RF430CL330HIRGTR from Texas Instruments is a Dynamic NFC Interface Transponder compliant with NFC Tag Type 4 and ISO/IEC 14443B, integrating a 13.56-MHz RF interface and dual-mode wired I²C/SPI host interface. It provides 3 KB of SRAM for NDEF message storage, automatic NDEF structure validation, and an interrupt output (INTO) signaling read/write completion. It enables tap-to-pair handover for Bluetooth and Wi-Fi in portable diagnostic and sensor devices.

For engineers reviewing the RF430CL330HIRGTR datasheet, RF430CL330HIRGTR pinout, RF430CL330HIRGTR application, or RF430CL330HIRGTR equivalent, key selection criteria include ISO14443B RF compliance up to 848 kbps, dual-protocol serial interface configurability, integrated antenna tuning support, low-power passive operation down to 2.0 V, and VQFN-16 package compatibility with space-constrained embedded designs.

Technical Context

The RF430CL330HIRGTR implements an MSP430-based processing unit managing both RF and wired communication layers. Its ISO14443B ASK demodulator supports data rates from 106 kbps to 848 kbps with 7–30% modulation depth, while its load modulator operates at 0.2–1 MHz subcarrier frequency with defined uplink voltage and field strength compliance.

Serial interface mode (I²C or SPI) is determined at power-up by the logic level on SCMS/CS, with internal pullup enabling SPI as default. I²C addressing uses hard-coded upper bits (0x50–0x57) set via E0–E2 pins; SPI mode selection (CPOL/CPHA) is configured via E0/E1 grounding or biasing per TI's Mode 0–3 mapping.

Key Specifications

Pinout & Package

VQFN-16 (RGT) package with 3 mm × 3 mm body size and exposed thermal pad for enhanced thermal performance. Pin numbering follows TI standard top-view orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NFC transponder applications.

Compared with NT3H2111W0FHKH and PN5180AUHN/C1, the RF430CL330HIRGTR uniquely balances dedicated tag functionality, dual-protocol flexibility, and robust RF performance in a compact VQFN package-making it optimal for cost-sensitive, space-constrained tap-to-pair implementations where reliability and low host overhead are critical.

Availability

RF430CL330HIRGTR is available at Aetrix Electronics and suitable for Bluetooth pairing, Wi-Fi provisioning, diagnostic interfaces, and sensor configuration requiring stable component supply across industrial, medical, and consumer electronics programs.

Supply support for RF430CL330HIRGTR 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

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions with leadership in signal chain and power management technologies.

The RF430CL330H product line delivers dynamic NFC transponders designed specifically for seamless wireless handover between NFC and short-range radio protocols in resource-constrained edge devices.

FAQ

What communication protocols does the RF430CL330HIRGTR support?

The RF430CL330HIRGTR supports both I²C and SPI serial interfaces - selected at power-up via the SCMS/CS pin level. In I²C mode, it uses a 7-bit address (0x50–0x57) configurable via E0–E2 pins; in SPI mode, it operates with CPOL/CPHA settings determined by E0/E1. The RF430CL330HIRGTR does not support UART or one-wire protocols.

How much NDEF memory does the RF430CL330HIRGTR provide, and is it persistent?

The RF430CL330HIRGTR provides 3 KB of on-chip SRAM dedicated to NDEF message storage. This memory is volatile and retains data only while powered - either from the host interface (VCC) or from energy harvested from the RF field. It is not flash-based and does not retain data after power loss, which aligns with NFC Tag Type 4 operational requirements.

Does the RF430CL330HIRGTR require external antenna matching components?

Yes, the RF430CL330HIRGTR requires external LC matching: a 2.66 µH antenna coil and total resonance capacitance of ~51.8 pF (C_IN + C_Tune). The device integrates 31.5–38.5 pF of input capacitance (C_IN), so C_Tune must be selected accordingly. No external balun or matching network is needed beyond this series-tuned circuit.

What is the function of the INTO pin on the RF430CL330HIRGTR?

INTO is an open-drain interrupt output that signals NDEF read/write completion, RF field detection, or error conditions. It remains low until cleared by reading the Interrupt Flags register (0xFFF8) over I²C or SPI. This pin enables event-driven host firmware design, allowing the microcontroller to sleep until an NFC interaction occurs - reducing system-level power consumption in battery-operated devices using the RF430CL330HIRGTR.

Can the RF430CL330HIRGTR operate without a host microcontroller?

No, the RF430CL330HIRGTR is not a standalone NFC tag - it requires a host microcontroller to write NDEF data into its SRAM via I²C or SPI before NFC readers can access it. While it supports passive RF operation (powered by the reader's field), all NDEF content must be pre-loaded by the host. It cannot autonomously generate or update NDEF records without host intervention.