The TI Dynamic NFC/RFID Interface Transponder RF430CL331H is an NFC Tag Type 4 device that combines a contactless NFC/RFID interface and a wired I2C interface to connect the device to a host. The NDEF message can be written and read from the integrated I2C serial communication interface and can also be accessed and updated over a contactless interface using the integrated ISO/IEC 14443 Type B compliant RF interface that supports up to 848 kbps.
The device requests responses to NFC Type 4 commands on demand from the host controller and stores only a portion of the NDEF message in its buffer at any one time. This allows NDEF message size to be limited only by the memory capacity of the host controller and specification limitations.
Support of read caching, prefetching, and write automatic acknowledgment features allows for greater data throughput.
This device enables NFC connection handover for an alternative carrier like Bluetooth®, Bluetooth® low energy (BLE), or Wi-Fi as an easy and intuitive pairing process or authentication process with only a tap.
As a general NFC interface, the RF430CL331H enables end equipment to communicate with the fast-growing infrastructure of NFC-enabled smart phones, tablets, and notebooks.
PART NUMBER | PACKAGE | BODY SIZE (2) |
---|---|---|
RF430CL331HIPW | TSSOP (14) | 5 mm × 4.4 mm |
RF430CL331HRGT | VQFN (16) | 3 mm × 3 mm |
Figure 3-1 shows the pinout for the 14-pin PW package.
Figure 3-2 shows the pinout for the 16-pin RGT package.
PIN NUMBER | SIGNAL NAME | SIGNAL TYPE (1) | BUFFER TYPE (2) | POWER SOURCE | RESET STATE (3) | |
---|---|---|---|---|---|---|
PW | RGT | |||||
1 | 15 | VCC | PWR | Power | VCC | N/A |
2 | 1 | ANT1 | RF | Analog | – | N/A |
3 | 2 | ANT2 | RF | Analog | – | N/A |
4 | 3 | RST | I | LVCMOS | VCC | PU |
5 | 4 | E0 | I | LVCMOS | VCC | OFF |
6 | 5 | E1 | I | LVCMOS | VCC | OFF |
7 | 6 | E2 | I | LVCMOS | VCC | OFF |
8 | 7 | INTO | O | LVCMOS | VCC | OFF |
9 | 8 | I2C_READY | O | LVCMOS | VCC | DRIVE1 |
10 | 9 | I2C_SIGNAL | O | LVCMOS | VCC | DRIVE1 |
11 | 10 | SCL | I/O | LVCMOS | VCC | OFF |
12 | 11 | SDA | I/O | LVCMOS | VCC | OFF |
13 | 12 | VCORE | PWR | Power | VCC | N/A |
14 | 13 | VSS | PWR | Power | VCC | N/A |
– | 14 | NC | – | – | – | – |
– | 16 | NC | – | – | – | – |
Table 3-2 describes the signals.
FUNCTION | SIGNAL NAME | PIN NUMBER | I/O (1) | DESCRIPTION | |
---|---|---|---|---|---|
PW | RGT | ||||
Power | VCC | 1 | 15 | PWR | 3.3-V power supply |
VCORE | 13 | 12 | PWR | Regulated core supply voltage | |
VSS | 14 | 13 | PWR | Ground supply | |
RF | ANT1 | 2 | 1 | RF | Antenna input 1 |
ANT2 | 3 | 2 | RF | Antenna input 2 | |
Serial communication | E0 | 5 | 4 | I | I2C address select 0 |
E1 | 6 | 5 | I | I2C address select 1 | |
E2 | 7 | 6 | I | I2C address select 2 | |
I2C_READY | 9 | 8 | O | High indicates that I2C communication can be started. Low indicates that I2C communication must not be started. | |
I2C_SIGNAL | 10 | 9 | O | Low indicates that a wait time extension command is automatically being sent. I2C communication does not have to be stopped. | |
SCL | 11 | 10 | I/O | I2C clock | |
SDA | 12 | 11 | I/O | I2C data | |
System | INTO | 8 | 7 | O | Interrupt output |
RST | 4 | 3 | I | Reset input (active low) (2) | |
No connect | NC | – | 14 16 |
– | Leave open, no connection |
None of the pins on this device are multiplexed.
BUFFER TYPE (STANDARD) | NOMINAL VOLTAGE | HYSTERESIS | PU OR PD | NOMINAL PU OR PD STRENGTH (µA) | OUTPUT DRIVE STRENGTH (mA) | OTHER CHARACTERISTICS |
---|---|---|---|---|---|---|
LVCMOS | 3.3 V | Y | N/A | See Section 4.6, Electrical Characteristics, Digital Inputs | See Section 4.7, Electrical Characteristics, Digital Outputs | |
Analog, RF | 3.3 V | N | N/A | N/A | N/A | See analog modules in Section 4, Specifications, for details |
Power | 3.3 V | Y with SVS on | N/A | N/A | N/A |
Leave no connect (NC) pins unconnected.
Leave unused outputs unconnected.
Drive or pull unused inputs high or low.
MIN | MAX | UNIT | |
---|---|---|---|
Voltage applied at VCC referenced to VSS (VAMR) | –0.3 | 4.1 | V |
Voltage applied at VANT referenced to VSS (VAMR) | –0.3 | 4.1 | V |
Voltage applied to any pin (references to VSS) | –0.3 | VCC + 0.3 | V |
Diode current at any device pin | ±2 | mA | |
Storage temperature, Tstg (3) | –40 | 125 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) | ±2000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101 (2) | ±500 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
VCC | Supply voltage | During program execution no RF field present | 3.0 | 3.3 | 3.6 | V |
During program execution with RF field present | 2.0 | 3.3 | 3.6 | |||
VSS | Supply voltage (GND reference) | 0 | V | |||
TA | Operating free-air temperature | –40 | 85 | °C | ||
C1 | Decoupling capacitor on VCC (1) | 0.1 | µF | |||
C2 | Decoupling capacitor on VCC (1) | 1 | µF | |||
CVCORE | Capacitor on VCORE (1) | 0.1 | 0.47 | 1 | µF |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
fc | Carrier frequency | 13.56 | MHz | ||
VANT_peak | Antenna input voltage | 3.6 | V | ||
Z | Impedance of LC circuit | 6.5 | 15.5 | kΩ | |
LRES | Coil inductance(2) | 2.66 | µH | ||
CRES | Total resonance capacitance(2), CRES = CIN + CTune | 51.8 | pF | ||
CTune | External resonance capacitance | CRES – CIN (1) | pF | ||
QT | Tank quality factor | 30 |
PARAMETER | TEST CONDITIONS | VCC | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|---|
ICC(I2C) | I2C, 400 kHz, Writing into NDEF memory | 3.3 V | 250 | µA | |||
ICC(RF enabled) | RF enabled, no RF field present | 3.3 V | 40 | µA | |||
ICC(Inactive) | Standby enable = 0, RF disabled, no serial communication | 3.3 V | 15 | µA | |||
ICC(Standby) | Standby enable = 1, RF disabled, no serial communication | 3.3 V | 10 | 45 | µA | ||
ΔICC(StrongRF) | Additional current consumption with strong RF field present | 3.0 V to 3.6 V | 160 | µA | |||
ICC(RF,lowVCC) | Current drawn from VCC < 3.0 V with RF field present (passive operation) | 2.0 V to 3.0 V | 0 | µA |
PARAMETER | TEST CONDITIONS | VCC | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|---|
VIL | Low-level input voltage | 0.3 × VCC | V | ||||
VIH | High-level input voltage | 0.7 × VCC | V | ||||
VHYS | Input hysteresis | 0.1 × VCC | V | ||||
IL | High-impedance leakage current | 3.3 V | –50 | 50 | nA | ||
RPU(RST) | Integrated RST pullup resistor | 20 | 35 | 50 | kΩ |
PARAMETER | TEST CONDITIONS | VCC | MIN | MAX | UNIT | |
---|---|---|---|---|---|---|
VOL | Output low voltage | IOL = 3 mA | 3 V | 0.4 | V | |
3.3 V | 0.4 | |||||
3.6 V | 0.4 | |||||
VOH | Output high voltage | IOH = –3 mA | 3 V | 2.6 | V | |
3.3 V | 2.9 | |||||
3.6 V | 3.2 |
PARAMETER | VALUE | UNIT | ||
---|---|---|---|---|
RθJA | Junction-to-ambient thermal resistance, still air(1) | TSSOP-14 (PW) | 116.0 | °C/W |
RθJC(TOP) | Junction-to-case (top) thermal resistance(2) | 45.1 | °C/W | |
RθJB | Junction-to-board thermal resistance(3) | 57.6 | °C/W | |
ΨJB | Junction-to-board thermal characterization parameter | 57.0 | °C/W | |
ΨJT | Junction-to-top thermal characterization parameter | 4.6 | °C/W | |
RθJA | Junction-to-ambient thermal resistance, still air(1) | VQFN-16 (RGT) | 48.8 | °C/W |
RθJC(TOP) | Junction-to-case (top) thermal resistance(2) | 60.8 | °C/W | |
RθJC(BOT) | Junction-to-case (bottom) thermal resistance(4) | 7.1 | °C/W | |
RθJB | Junction-to-board thermal resistance(3) | 21.9 | °C/W | |
ΨJB | Junction-to-board thermal characterization parameter | 21.9 | °C/W | |
ΨJT | Junction-to-top thermal characterization parameter | 1.5 | °C/W |
PARAMETER | MIN | MAX | UNIT | |
---|---|---|---|---|
tReady | Time after power up or reset until device is ready to communicate using I2C(1) | 20 | ms |
PARAMETER | TEST CONDITIONS | VCC | MIN | MAX | UNIT | |
---|---|---|---|---|---|---|
fSCL | SCL clock frequency (with Master supporting clock stretching according to I2C standard, or when the device is not being addressed) | 3.3 V | 0 | 400 | kHz | |
SCL clock frequency (device being addressed by Master not supporting clock stretching) | Write | 3.3 V | 0 | 120 | ||
Read | 3.3 V | 0 | 100 | |||
tHD,STA | Hold time (repeated) START | fSCL ≤ 100 kHz | 3.3 V | 4 | µs | |
fSCL > 100 kHz | 0.6 | |||||
tSU,STA | Setup time for a repeated START | fSCL ≤ 100 kHz | 3.3 V | 4.7 | µs | |
fSCL > 100 kHz | 0.6 | |||||
tHD,DAT | Data hold time | 3.3 V | 0 | ns | ||
tSU,DAT | Data setup time | 3.3 V | 250 | ns | ||
tSU,STO | Setup time for STOP | 3.3 V | 4 | µs | ||
tSP | Pulse duration of spikes suppressed by input filter | 3.3 V | 6.25 | 75 | ns |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
VDDH | Antenna rectified voltage | Peak voltage limited by antenna limiter | 3.0 | 3.3 | 3.6 | V |
IDDH | Antenna load current | RMS, without limiter current | 100 | µA | ||
CIN | Input capacitance | ANT1 to ANT2, 2 V RMS | 31.5 | 35 | 38.5 | pF |
PARAMETER | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|
DR10 | Input signal data rate 10% downlink modulation, 7% to 30% ASK, ISO1443B | 106 | 848 | kbps | |
m10 | Modulation depth 10%, tested as defined in ISO/IEC 10373-6 | 7% | 30% |
PARAMETER | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|
fPICC | Uplink subcarrier modulation frequency | 0.2 | 1 | MHz | |
VA_MOD | Modulated antenna voltage, VA_unmod = 2.3 V | 0.5 | V | ||
VSUB14 | Uplink modulation subcarrier level, ISO/IEC 14443B: H = 1.5 to 7.5 A/m | 22/H0.5 | mV |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
VLIM | Limiter clamping voltage | ILIM ≤ 70 mA RMS, f = 13.56 MHz | 3.0 | 3.6 | Vpk | |
ILIM,MAX | Maximum limiter current | 70 | mA |