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U3280M Datasheet(PDF) 3 Page - ATMEL Corporation |
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U3280M Datasheet(HTML) 3 Page - ATMEL Corporation |
3 / 19 page 3 Atmel U3280M [DATASHEET] 4688E–RFID–05/13 2. Pin Configuration Figure 2-1. Pinning 1 2 3 4 5 6 7 8 Coil 2 Coil 1 NC NC NC NC NGAP MOD 16 15 14 13 12 11 10 9 VBatt VDD SCL NRST SDA VSS NC FC Table 2-1. Pin Description Pin Symbol Function 1 VBatt Power supply voltage input to connect a battery 2 VDD Power supply voltage for the microcontroller and EEPROM. At this pin a buffer capacitor (0.5 to 10µF) must be connected to buffer the voltage during field supply and to block the VDD of the microcontroller. 3 SCL Serial clock line 4 NRST Reset line bi-directional 5 SDA Serial data line 6 VSS Circuit ground 7 NC Not connected 8 FC Field clock output of the front-end clock extractor 9 MOD Modulation input 10 NGAP Gap and field detect output 11 NC Not connected 12 NC Not connected 13 NC Not connected 14 NC Not connected 15 Coil 1 Coil input 1. Use pin to connect a resonant circuitry for communication and field supply 16 Coil 2 Coil input 2. Use pin to connect a resonant circuitry for communication and field supply |
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