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HT672B Datasheet(PDF) 4 Page - Holtek Semiconductor Inc |
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HT672B Datasheet(HTML) 4 Page - Holtek Semiconductor Inc |
4 / 8 page Timing & Code Package Application Circuits Tag A tag consists of a PCB (or Mylar film) with printed coil, HT672B and a housing. The housing can be of various shapes. Note: The value of the antenna inductance is 11 mH, however the optimum value will be changed slightly due to the variation of the internal resonance capacitor (10pF typically) during process. For more application information about the reader, refer to Holtek ¢s 13.56MHz RF ID reader data. 2-chip Solution HT672B Rev. 1.10 4 November 23, 2004 O n e P a c k a g e F o r m a t P r o d u c t C o d e C u s t o m e r I D ( 1 2 b i t s ) ( 2 0 b i t s ) S y n c . D a t a ( 8 b i t s ) C h e c k S u m Code Package A total of 40 bits information can be stored in the HT672B, from which 20 bits are customer programmable. · Sync. data: Including 4 bits (which low/high duty length is 50%) · Mark data: 2 bits (always high signal). · Customer ID: This 12-bit wide code is not customer programmable and is supplied together with the data writer after register to Holtek. The writer generates the code automatically. · Product code: Storing the contents of the user ID number or data. · Check sum: A 8 bits of checksum code is generated automatically by the writer. H F H F 1 H T 6 7 2 B P C B T a g H o u s i n g H T 6 7 2 B E n e r g y D a t a H o l t e k T r a n s p o n d e r S o l u t i o n H o l t e k R e a d e r S o l u t i o n O t h e r C o n t r o l l e r R F o s c & R e c e i v e r D a t a D e c o d e & S y s t e m C o n t r o l S p e c i a l P u r p o s e C o n t r o l l e r H o l t e k l o w c o s t M C U : H T 4 8 R 0 5 A - 1 / H T 4 8 R 0 6 A - 1 A N T A N T |
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