General Description
The HT672A is an RF transponder IC with 13.56MHz RF carrier, which provides a low cost battery less transponder solution when combined with an external in ductor. The inductor and internal capacitor form an LC tank which induce voltage from the radiated 13.56MHz carrier signal generated from the reader antenna.

FEATUREs
  Low low operating current (15µA @ VDD=2V)
  Wide range operating voltage
  Battery less RF transponder
  Data transmission in read-only operation
  Max. of 64-bits customer programmable data
  16-bits CRC error detection code
  OTP data memory
  13.56MHz carrier frequency
  Output data baud rate: 5kbps (Typ.)
  PWM/ASK modulation
  Built-in voltage limiter
  8-pin DIP package available for engineering evaluation - not for volume production
 
Applications
  Interactive toys
  Security system
  Access control
  Anti-counterfeit for commercial product