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Application Note for Transponder Evaluation Board ATAB5570
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Secure, Sensitive, Low Power Identification Devices
RFID involves contactless reading and writing of data into an RFID tag's nonvolatile memory through an RF signal. Low frequency RFID devices typically consist of a transponder (tag) and reader.
To help you reach the extensive vertical markets that rely on RFID, we offer a complete line of contactless products. Our transponders and readers operate within the 100 to 150 kHz and 13.56 MHz bandwidth ranges. Our RFID chips are suitable for the smallest devices and require few external components, lowering your system costs. Rugged architecture with excellent noise suppression increases reliability and usability in both indoor and outdoor environments.
You can choose from a broad range of read or read/write devices, available as identification ICs on die on wafer, die in tray, die on tape, or micromodule, to complete transponders in plastic packaging with reader, tag and development library.
Key Features
- Standards based — You can rely on the fact that Atmel complies to industry-specific standards, such as ISO 11784/85 (FDX-B and FDX-A) for agriculture and ISO 14443 for public transportation applications.
- Flexible modulation coding options — The chips can be easily configured to suit a broad array of modulation schemes: FSK, PSK ,ASK, Manchester, Bi-phase, NRZ direct coding, and more.
- Strong security — Atmel transponders contain a unique identification number (UID) with traceability code. Both transponders and readers offer single or mutual authentication for read and/or write copy protection and encryption for data transmissions.
- Low power design — All RFIDs ICs are designed to "sleep" after scans to conserve power and extend battery life. The low power consumption extends the read/write operating distance compared to competitive products.
- Anti-collision features — Atmel ICs can handle several transponders simultaneously to increase functionality.
- Development support — Internal test structures make verification and standard compliance testing convenient and time-efficient, even for designers with little prior RFID experience. Self-contained demonstration kits include an LCD and control buttons so you can interact with the RFID system. Source code, building blocks, and reference designs let you quickly evaluate and prototype complete system-level designs.
RF Identification Devices
| Device Family |
Summary Benefit |
Applications |
Technologies |
Key Parameters |
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Complete LF-RFID AVR based reader in a single package. |
Access Control, industrial automation, animal identification, brand protection, electronic label. |
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8KB memory
100-150 kHz
ASK modulation
Manchester/Bi-Phase/NRZ coding
38-lead 7x5mm QFN package. |
Low frequency Atmel IDIC® (IDentification IC) devices are designed for the latest generation of contactless access control systems used in hotel room, office, parking lot applications as well as customer loyalty and membership cards. Its OTP (one-time programmable) functionality simplifies the production process and accelerates time to market.
Learn more
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Simplifies the production process and accelerates time to market. |
Contactless access control systems used in hotel room, office, parking lot applications as well as customer loyalty and membership cards. |
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OTP |
Low frequency Atmel IDIC® (IDentification IC) devices are designed for the latest generation of contactless access control systems used in hotel room, office, parking lot applications as well as customer loyalty and membership cards. Its OTP (one-time programmable) functionality simplifies the production process and accelerates time to market.
Learn more
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Integrates components to reduce your bill of materials |
Contactless access control systems used in hotel room, office, parking lot applications as well as customer loyalty and membership cards. |
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Low frequency Atmel IDIC® (IDentification IC) devices integrate components to reduce your bill of materials. A single coil, connected to the chip, serves as the power supply and bi-directional communication interface, while the antenna and chip together form the transponder (tag). An on-chip EEPROM can be read and written block-wise from the reader.
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Bidirectional interface |
RFID readers |
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Read/Write Base Station IC, 100 to 150 kHz Carrier Frequency, Amplitude Modulation Typically Up to 5K Baud, Manchester/Biphase RF/32, RF/64, RF/128 |
The low frequency Atmel IDIC® (IDentification IC) reader uses a bidirectional interface to communicate between the transponder and microcontroller, amplifying the transponder signal and forwarding it to the microcontroller for decoding. The reader supports both Manchester and Bi-phase data encoding schemes.
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A range of packaging options, data rates, and memory sizes and security levels |
RFID readers |
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Our low frequency Atmel IDIC® (IDentification IC) transponders offer a range of packaging options, data rates, and memory sizes. They also offer different security levels so that you can create secure solutions that meet the diverse needs of your customers.
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Integrated programmable receiver channel that offers extremely low current consumption in active listening mode, especially suited for wake-up applications |
Auditing and tracking systems.
Localization and security systems |
RFID
BCDMOS antenna driver IC |
125kHz wake up
ASK and FSK modulation
20-kbaud data rate in Manchester mode |
Atmel Active RFIDs are integrated BCDMOS antenna driver ICs used as 125kHz wake-up channel transmitters for automotive auditing and tracking systems, or localization and security systems. The full-function, smart power ICs generate a magnetic LF field with an antenna coil to transmit data and power to a receiver, and can be controlled via a one-wire I/O-interface by an external unit.
Designers can choose between two embedded ultra-low power AVR 8-bit microcontrollers that integrate RF transmission and LF receiving functionality in a small QFN32 package: - Atmel ATA6285 - RF transmission supports 313-MHz to 317-MHz frequency ranges with a typical output power of up to 6dBm.
- Atmel ATA6285 - RF transmission supports 432-MHz to 448-MHz frequency ranges with a typical output power of up to 6dBm.
Both feature an integrated programmable 125-kHz LF-receiver channel that offers extremely low current consumption in active listening mode, especially suited for wake-up applications. And both support ASK and FSK modulation, with up to a 20-kbaud data rate in Manchester mode.
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