Holtek Semiconductor HT672B
The HT672B is a RF transponder IC operating with 13.56MHz RF carrier, which provides a low cost batteryless transponder solution with the addition of merely an external inductor. The inductor and internal capacitor form a LC tank which inducing voltage from the radiated 13.56MHz carrier signal generated from the reader antenna. The response data is transmitted using PWM/ASK modulation.| Part No. | HT672B |
|---|---|
| Datasheet | HT672B Download |
| Manufacturer |  Holtek Semiconductor |
| Description | 13.56MHz RFID Transponder |
| Buy | Stock & Price |
FEATURES
● Wide range operating voltage● Batteryless RF transponder
● Data transmission in read-only operation
● 6-bits sync + 32-bits data + 8-bits CRC
● OTP data memory
● 13.56MHz carrier frequency
● Output data baud rate: 10kbps at VDD=3V
● PWM/ASK modulation
● Built-in voltage limiter
● 8-pin DIP package
APPLICATIONS
● Interactive leisure products● Security system
● Access control
● Anti-counterfeit devices
● Material management
● Animal management
● Personnel working time record
● Car park monitoring system
GENERAL DESCRIPTION
HT672B has a built-in low power RC oscillator which is activated if the induced carrier field strength is high enough to supply the operating current and the response signal(pre-programmed in the OTP memory) is serial transmitted out. Modulation of 13.56MHz is accomplished by damping the LC tank with a fixed baud rate. The transmission information is stored in 40 bits. One Time Programmable memory (OTP) (up to 32 bits reserved for customer) in the chip, with a 8-bits checksum code.
