 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| HT672B 13.56MHz RFID Transponder 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 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. 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. The response data is transmitted using PWM/ASK modulation. 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. The effective detection range for a small sized antenna is 2cm~10cm which is dependent on antenna format & reader design. The larger the antenna loop used the longer the detection range. It is advisable to use larger antenna to attain a 15cm detection range. Implementing Holteks advanced OTP and low power technology, HT672B offers a very cost effective solution for RF contactless detection system. A code area of 32-bits(max.) wide is provided so customers can program the device using the specified programmer supplied by Holtek. The pre-programmed Ics are also available upon customers request. Block Diagram HF S y s te m C lo c k G e n e ra to r VCC L im ite r and R F L im ite r VDD HF1 F re q u e n c y D r iv e r f/4 D a ta P r o c e s s in g P W M /A S K M o d u la to r S h ift R e g is te r D a ta T e s t B lo c k VSS VPP CLK Rev. 1.10 1 November 23, 2004 HT672B Pin Assignment HF 1 8 2 7 3 6 4 5 H T672B 8 D IP -A NC NC HFI VCC VPP CLK GND Pad Assignment HF 1 6 VCC VPP 5 (0 ,0 ) 2 3 HF1 4 CLK GND Chip size: 36.436.4 (mil)2 * The IC substrate should be connected to VSS in the PCB layout artwork. Pad Coordinates Pad No. 1 2 3 X -252.875 -252.875 112.975 Y 303.663 -298.537 -314.687 Pad No. 4 5 6 X 247.074 238.174 126.674 Y Unit: mm -297.912 284.663 284.663 Pad Description Pad No. 1 2 3 4 5 6 Pad Name HF HF1 VSS CLK VPP VDD I/O I/O I/O 3/4 I I 3/4 Internal Connection CMOS CMOS 3/4 CMOS 3/4 3/4 Description Connect to an antenna coil for normal operation. Open for data programming. Connect to an antenna coil for normal operation. Data I/O for programming. Negative power supply, ground Open for normal operation. Clock input for programming. Open for normal operation. High voltage supplies input for programming. (Suggest 12.5V for programming) Open for normal operation, +6V supply input for programming. Rev. 1.10 2 November 23, 2004 HT672B Absolute Maximum Ratings Supply Voltage (VDD) ............................................5.5V Supply Voltage (VPA) ..........................................12.5V Input Voltage .............................VSS-0.3V to VDD+0.3V Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Storage Temperature ...........................-50C to 125C Operating Temperature ..............................0C to 70C Electrical Characteristics Symbol VDD IDD IDD Rm VLCL BR Parameter Operating Voltage Operating Current Operating Current Modulation Resistance LC Input Limiter Voltage Output Data Baud Rate Test Conditions VDD 3/4 2V 3V 3.3V 3/4 3V VDD vs VSS Conditions VDD pad voltage 3/4 3/4 3/4 3/4 Min. 2 3/4 3/4 3/4 3/4 5 Typ. 3 15 400 320 6.5 10 Max. 4 3/4 3/4 3/4 3/4 15 Unit V mA mA W V Kbps Functional Description Operation Concept The reader transmits a 13.56MHz carrier signal from its antenna, the LC tank on the transponder side converts the carrier energy to voltage form and supply to the transponder chip with an internal pump circuit. If the induced energy is high enough, the pumped voltage reaches the break-in voltage of internal RC-oscillator, the transponder is actuated to transmit its internal data serially by means of damping the LC tank. The reader receiving the transponders data by means of detecting the energy variation on its own antenna, and recognize the information with a microcontroller. E n e rg y The HT672B has a built-in internal Voltage Limiter to prevent excess power supply and RF levels induced by the LC tank from damaging the device or causing the device to function abnormally. A total of 40 bits of OTP memory space is provided, from which 20 bits wide are customer programmable, which can be programmed using the specified programmer supplied by Holtek. The pre-programmed Ics are also available upon customers request. T ra n s p o n d e r Reader HT672B R F osc & C o n tr o lle r D a ta Rev. 1.10 3 November 23, 2004 HT672B Timing & Code Package ( 1 2 b its ) S y n c . D a ta C u s to m e r ID ( 2 0 b its ) P ro d u c t Code ( 8 b its ) C heck Sum O n e P a c k a g e F o rm a t 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 * Customer ID: This 12-bit wide code is not customer (which low/high duty length is 50%) * Mark data: 2 bits (always high signal). 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. 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. T a g H o u s in g PCB HF HF1 H T672B Note: The value of the antenna inductance is 11mH, 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 Holteks 13.56MHz RF ID reader data. 2-chip Solution H o lte k T r a n s p o n d e r S o lu tio n E n e rg y H o lte k R e a d e r S o lu tio n O th e r C o n tr o lle r HT672B ANT ANT R F osc & R e c e iv e r D a ta D ecode & S y s te m C o n tro l S p e c ia l P u rp o s e C o n tr o lle r D a ta H o lte k lo 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 Rev. 1.10 4 November 23, 2004 HT672B 1-chip Solution (I) H o lte k T r a n s p o n d e r S o lu tio n E n e rg y H o lte k R e a d e r S o lu tio n HT672B ANT ANT R F osc & R e c e iv e r D a ta D ecode & S y s te m C o n tro l F u n c tio n C o n tro l D a ta H o lte k S ta n d a r d M C U : H T 4 8 X X X /H T 4 9 X X X 1-chip Solution (II) H o lte k T r a n s p o n d e r S o lu tio n E n e rg y H o lte k R e a d e r S o lu tio n HT672B ANT ANT R F osc & R e c e iv e r D a ta D ecode & S y s te m C o n tro l F u n c tio n C o n tro l D a ta , V o ic e orLC D D is p la y P r o c e s s in g D a ta H o lte k E m b e d d e d M C U : H T G 2 1 X X /H T 8 6 X X X Rev. 1.10 5 November 23, 2004 V 0~20pF 200pF 0 .1 m F 0 .7 3 m H 0 .1 m F F F DD FR H E8550 220mF/ 16V SW SPDT 120W FR FR 2 .7 m H 2SC1815Y 100pF 2SA733 20pF 20pF 150pF 750W 0 .1 m F 51W 82pF F 1 3 .5 6 M H z 220mF/ 16V 30kW V CC 330W 2 2 0 m F /1 6 V LED 330W LED 330W LED 330W LED H E8050S F H E8050S 150W 240W 1 820kW 3 2 PA3 PA2 PA1 PA4 PA5 PA6 18 17 16 1kW 36kW 1kW 10kW 3 2 8 1 4 2 .2 k W 5 H T82V732 6 10kW 0 .1 m F 560kW 8 7 6 4 0 .0 0 2 2 m F H T82V732 7 8 5 4 PA0 PB2 P B 1 /B Z P B 0 /B Z VSS 75W 9 P C 0 /IN T PA7 OSC2 OSC1 VDD RES P C 1 /T M R H T 4 8 R 0 6 A -1 15 14 13 12 11 100kW 200pF 680W 1kW 200pF 10kW 10 100mF 10kW 0 .1 m F 470pF F RFID Reader :TX :RX :O SC :PW R Rev. 1.10 6 0 .1 m F November 23, 2004 HT672B HT672B Package Information 8-pin DIP (300mil) Outline Dimensions A B 1 8 5 4 H C D E F G a I Symbol A B C D E F G H I a Dimensions in mil Min. 355 240 125 125 16 50 3/4 295 335 0 Nom. 3/4 3/4 3/4 3/4 3/4 3/4 100 3/4 3/4 3/4 Max. 375 260 135 145 20 70 3/4 315 375 15 Rev. 1.10 7 November 23, 2004 HT672B Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shanghai Sales Office) 7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China 200233 Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor Inc. (Shenzhen Sales Office) 43F, SEG Plaza, Shen Nan Zhong Road, Shenzhen, China 518031 Tel: 0755-8346-5589 Fax: 0755-8346-5590 ISDN: 0755-8346-5591 Holtek Semiconductor Inc. (Beijing Sales Office) Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China 100031 Tel: 010-6641-0030, 6641-7751, 6641-7752 Fax: 010-6641-0125 Holmate Semiconductor, Inc. (North America Sales Office) 46712 Fremont Blvd., Fremont, CA 94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright O 2004 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.10 8 November 23, 2004 |
Price & Availability of HT672B
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |