ATA5577C
T55xx-compatible multi-protocol rewritable
Full Specifications
| Manufacturer | Microchip |
|---|---|
| Frequency Category | LF 125 kHz |
| Frequency | 100 kHz to 150 kHz (LF) |
| Protocol | Configurable for ISO/IEC 11784/785 compatibility, T5557/ATA5567 compatible, e555x/T5551 replacement |
| Memory | 363 bits EEPROM total: 11 blocks × 33 bits (7 × 32-bit user blocks + 32-bit password + 2 × 32-bit unique ID + 32-bit option register + 32-bit configuration register), each block with 1 lock bit |
| Interface | RF (contactless read/write, load modulation uplink, OOK PIE downlink) |
| Temperature Range | -40°C to +85°C |
| Form Factor | Die Type 1 (100 µm × 100 µm pads for wire bonding/flip chip), Die Type 2 (200 µm × 400 µm mega pads for direct coil bonding), sawn wafer on foil, NOA3 micromodule, XDFN 1.5 mm × 2 mm, Transponder Brick package; on-chip trimmed antenna capacitor 250 pF or 330 pF (±3%) |
| Security | 32-bit password mode, blockwise write protection (lock bits), OTP functionality, Answer-On-Request (AOR) mode for anti-collision, Test mode access disable, master key protection |
Engineering Brief
The ATA5577C is a flexible read/write LF RFID chip for 100–150 kHz (125 kHz or 134 kHz) applications, with 363-bit EEPROM organized in 11 blockwise-programmable blocks. It supports multiple modulation schemes (Manchester, Bi-phase, FSK, PSK, NRZ) and binary or fixed data rates (RF/2 to RF/128). Features include configurable downlink protocols (fixed bit length, long leading reference, leading zero reference, 1-of-4 coding), password protection, AOR mode, soft modulation switching, and on-chip tuning capacitor options (250 pF or 330 pF). It is compatible with T5557/ATA5567 and can replace e5551/T5551 in most common modes, making it suitable for animal ID (ISO 11784/11785), access control, and general LF RFID tagging applications.
Typical Applications
- Animal identification (ISO 11784/11785 FDX-B)
- Access control systems
- Waste management tracking
- Generic LF RFID tags for 125 kHz/134 kHz applications
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