Application Circuits

Tag

A tag consists of a PCB (or Mylar film) with printed coil, HT6740 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

HT6740

Rev. 1.10

4

November 23, 2004

Code Package

A total of 23 bits information can be stored in the

HT6740, from which 6 bits are customer programmable.

length is 50%)

programmable and is supplied together with the data

writer after register to Holtek. The writer generates the

code automatically.

number or data.

automatically by the writer.

H T 6 7 4 0

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

H F

H F 1

H T 6 7 4 0

P C B

T a g H o u s i n g