NFC Key Features and Application from Silicon Craft Technology
228-Byte NFC Tag Type 2 with Built-in Sensor Interface
is a 228-byte ISO14443A passive NFC-Forum Type 2 Tag, which has the capability to connect with many kinds of analog sensors. With 12-bit-output-sigma-delta ADC (10-bit ENOB), SIC4340 can acquire the sensor’s voltage response at a specifc time after biasing by the adjustable current source,the adjustable sensor-biasing frequency generator and the voltage limiter.
The sensor can be either resistive, capacitive or combination of them. By relying on the computing power given in mobile devices and NFC communication, the SIC4340 becomes the mediator oﬀering the cheapest method conveying sensing information to display in mobile phone or even relay to internet.
NFC-Forum Type 2 Tag with 7-byte UID
Resistive/Capacitive Sensor Interface
Adjustable current source with voltage limiter
14-bit (10 bit ENOB) @ 1.28V Full scale
Output bit selectable : 8, 10, 12, 14 bit
Adjustable sensor biasing frequency:300Hz – 50kHz
Adjustable warmup clock
0.0 to 1.0V biasing protection with 5mV resolution
Interfaces and Peripherals
Fully compliant with ISO14443A
RF read distance up to 10 cm depending on readers
On-chip capacitance 50 pF
EEPROM organization enabling NDEF format
1 Kbytes EEPROM
Public memory area supporting dynamic NDEF
Secure memory area avialable after authentication
Enabling the sensors to seamlessly measure and forward data in a wide range of applications with an NFC-Forum type 2 tag with sensor interface.
Applications: Temperature sensor, Chemical sensor, Healthcare sensor,Resistor/Capacitor measurement, etc.