SIC4340

product-4340-41

SIC4340

NFC-Forum Type 2 Tag with Generic Sensor Interface

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Description

228 byte nfc tag type 2

NFC-Forum Type 2 Tag with Generic Sensor Interface

A new 228-byte ISO14443A passive sensor NFC tag with analog sensor for acquisition interface, to enable the sensors to seamlessly measure and forward data

Sensor Interface Peripheral

  • Resistive/Capacitive sensor interface circuit
    • Resistance-to-Voltage measurement by dumping current source
    • Effective resistance range from 1kΩ to 300 kΩ
  • Adjustable current source
    • 6-Bit Resolution
    • 2 Ranges
       0 – 504 μA @ 8μA/Step
       0 – 63 μA @ 1μA/Step
  • Built-in ADC
    • 10-Bit effective resolution @ 1.28 volt full scale
    • Selectable post processing averager
    • Configurable built-in voltage buffer for high-impedance sensor
    • Temperature compensate voltage reference
  • Adjustable voltage limiter for preventing sensor burning or over voltage
    • 0 – 1.27 Volt
  • Adjustable sensor biasing frequency for supporting wide capacitance-range sensor
    • 300 Hz – 50 kHz
  • Adjustable sampling point for supporting various settling time
    • 1 – 49% referring to active period of sensor biasing pulse
  • Adjustable warm up clock for pre-biasing sensor
    • 8 – 491528 clocks

RF Interfaces

  • RF interface based on ISO14443A – 106 kbps
  • NFC Forum tag type 2
  • RF power qualifying scheme before operation

Memory

  • 236 bytes addressable EEPROM
  • 192 bytes user memory EEPROM
  • EEPROM organization enabling NDEF format
  • EEPROM erase/write cycle up to 100,000 times
  • EEPROM memory retention up to 10 years at 70 oC
  • EEPROM zone for initializing register
    • Automatically reload after power up

Operating Conditions

  • Operating temperature from 0 oC to 55 oC
  • On-chip regulator

Die Information

  • Die size : 1200 um x 1200 um
  • # Pad : 8 Pads
  • Au pad size : 80 um x 80 um

Applications

  • Chemical sensor NFC tag
  • Tampered detection NFC tag
  • Light/Humidity sensing NFC tag
  • Closed Chamber Measurement

Demo Video

Download Document