AT8200 Preliminary Product Information Read Only Contacless Transponder Feature 1. Batteryless transponder 2. Embedded 64-bit poly fuse ROM 3. On chip supply buffer capacitor 4. On chip voltage limiter 5. Full wave voltage regulator 6. Operating frequency:128k±5kHz 7. Fixed data rate:8K Hz 7. Die size :1mmx1mm VS1 AT8200 VS2 Coil Typical Operating Configuration Descriptions The AT8200 is a read-only transponder for identification purpose. The AT8200 is a CMOS process IC. It is batteryless because it gets the energy as its power from an external coil in an electromagnetic field. It gets the clock from the electromagnetic field and read the data from internal preprogrammed poly fuse ROM. By turning On/Off the modulation circuit, the AT8200 send the back scattering data to a read device. The poly fuse is programmed at the factory and has been well verified. The code is unique in each die. The AT8200 has a build-in resonance capacitor and it needs only an external coil to obtain the required energy. The supply buffer capacitor is also build-in. The code type is PSK and the data rate is fixed at 16 periods of carrier frequency. Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 1 AT8200 Preliminary Product Information Read Only Contacless Transponder Pin Description VS1: coil terminal VS2: coil terminal/clock input VS2 VS1 Functional Block Diagram VS1 80p VS2 Full wave Regulator & Voltage Limiter VDD Modulator VSS Timing Generator Clock Slicer Encoder 64-bit Poly Fuse ROM Address Generator 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 2 AT8200 Preliminary Product Information Read Only Contacless Transponder Functional Description Full Wave Regulator and Voltage Limiter The power supply of the AT8200 is got from the external electromagnetic field induced by an external coil. The induced AC voltage is full wave rectified to get the DC power supply. If the induced AC voltage is too large, the chip will be damaged. A voltage limiter is required to protect the AT8200 from malfunction. Clock Slicer The system clock of the AT8200 is got from pin VS2. It must be sliced and level-shifted to drive the internal logic circuit. Timing Generator and Address Generator The internal logic to get the necessary timing control signal to sequentially read the data from the pre-programmed poly-fuse ROM. The data is repeatly read from the ROM at 64-bit period. Encoder and Modulator The data read from the ROM is encoded to PSK data format. The PSK data is used to control the modulation circuit to let the internal switch to on/off. The on/off operation will affect the back scattering signal read by the reader device. Poly Fuse ROM *The “1” means fuse is broken by laser beam PC0 DA0 D80 D60 D40 D20 D00 1 PC1 DA1 D81 D61 D41 D21 D01 0 PC2 DA2 D82 D62 D42 D22 D02 0 PC3 PA P8 P6 P4 P2 P0 0 PC4 DB0 D90 D70 D50 D30 D10 0 PC5 DB1 D91 D71 D51 D31 D11 0 PC6 DB2 D92 D72 D52 D32 D12 0 PC7 PB P9 P7 P5 P3 P1 0 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 3 AT8200 Preliminary Product Information Read Only Contacless Transponder Maximum Rating 1. Operating Temperature :0~70 2. Storage Temperature :-20~150 3. RF input voltage (VS1-VS2) : 20Vpp Electrical Characteristics Test conditions: temperature=25ºC 1. Supply voltage (VS1-VS2): min. 3.6Vpp max: 20Vpp 2. Supply current: tbd 3. Power supply capacitor: 100-130p 4. Resonance capacitor: 70-90p 5. Modulation Index: >40% when VS1-VS2=10Vpp 6. Carrier frequency: 128k±5kHz 7. Data rate: carrier frequency /16 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 4