Maker : ATMEL Corporation
Part No. : ATA5577

  Datasheet PDF : ATA5577.pdf
  Cross Reference : ATA5577 Cross Reference
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Shortcut : ATA5570  ATA5575M1  ATA5575M2  ATA5577 

Product Information

Features • • • • • • • • • • Contactless Power Supply Contactless Read/Write Data Transmission Radio Frequency fRF from 100 kHz to 150 kHz Basic Mode or Extended Mode Compatible with T5557, ATA5567 Replacement for e5551/T5551 in Most Common Operation Modes Configurable for ISO/IEC 11784/785 Compatibility Total 363 Bits EEPROM Memory: 11 Blocks (32 Bits + 1 Lock Bit) High Q-antenna Tolerance Due to Build in Options Adaptable to Different Applications: Access Control, Animal ID and Waste Management • On-chip Trimmed Antenna Capacitor • Pad Options – ATA5577M1 • 100 µm × 100 µm for Wire Bonding or Flip Chip – ATA5577M2 • 200 µm × 400 µm for Direct Coil Bonding Read/Write LF RFID IDIC 100 to 150 kHz ATA5577 Summary 1. Description The ATA5577 is a contactless read/write identification IC (IDIC ) for applications in the 125-kHz or 134-kHz frequency band. A single coil connected to the chip serves as the IC’s power supply and bi-directional communication interface. The antenna and chip together form a transponder or tag. The on-chip 363-bit EEPROM (11 blocks with 33 bits each) can be read and written block-wise from a base station (reader). Data is transmitted from the IDIC (uplink) using load modulation. This is achieved by damping the RF field with a resistive load between the two terminals Coil 1 and Coil 2. The IC receives and decodes serial base station commands (downlink), which are encoded as 100% amplitude modulated (OOK) pulse-interval-encoded bit streams. www.DataSheet4U.com A complete datasheet with further technical data is available on request. Please contact your local sales office. ® Preliminary NOTE: This is a summary document. The complete document is available. For more information, please contact your local Atmel sales office. 4967DS–RFID–10/08 2. Compatibility The ATA5577 is designed to be compatible with the T5557/ATA5567. The structure of the configuration register is identical. The two modes, Basic mode and Extended mode, are also available. The ATA5577 is able to replace the e5551/T5551 in most common operation modes. In all applications, the correct functionality of the replacements must be evaluated and proved. For further details, refer to Atmel®’s web site for product-relevant application notes. 3. System Block Diagram Figure 3-1. RFID System Using ATA5577 Tag Transponder Power Reader or Base station Coil interface Controller Memory Data 1) ATA5577 1) Mask option 4. ATA5577 - Functional Blocks Figure 4-1. Block Diagram Option register www.DataSheet4U.com Modulator POR Coil 1 Analog front end Mode register Write decoder Memory (363-bit EEPROM) Controller 1) Coil 2 Data-rate generator Input register Test logic HV generator 1) Mask option 2 ATA5577 [Preliminary] 4967DS–RFID–10/08 ATA5577 [Preliminary] 4.1 Analog Front End (AFE) The AFE includes all circuits that are directly connected to the coil terminals. It generates the IC's power supply and handles the bi-directional data communication with the reader. It consists of the following blocks: • Rectifier to generate a DC supply voltage from the AC coil voltage • Clock extractor • Switchable load between Coil 1 and Coil 2 for data transmission from the tag to the reader • Field-gap detector for data transmission from the base station to the tag • ESD-protection circuitry 4.2 Data-rate Generator The data rate is binary programmable to operate at any even-numbered data rate between RF/2 and RF/128 or to any of the fixed Basic mode data rates (RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/100 and RF/128). 4.3 Write Decoder The write decoder detects the write gaps and verifies the validity of the data stream according to the Atmel e555x downlink protocol (pulse interval encoding). 4.4 HV Generator This on-chip charge pump circuit generates the high voltage required to program the EEPROM. 4.5 DC Supply Power is externally supplied to the IDIC via the two coil connect...

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