T5577 - 125 kHz Read/Write LF RFID IDIC | Microchip Technology
Teilenummer: T5577 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.42 | $0,42 |
| 10 | $0.36 | $3,60 |
| 100 | $0.28 | $28,00 |
| 500 | $0.22 | $110,00 |
| 1.000 | $0.18 | $180,00 |
T5577 Übersicht
An LF RFID IDIC (Low-Frequency Identification Integrated Circuit) is a passive transponder IC designed for short-range (typically 5–15 cm) contactless identification. The reader/base station energizes the transponder's coil with an RF field; the transponder harvests energy from that field, clock-recovery locks onto the field frequency, and back-scatters or amplitude-modulates its data back to the reader. The 100–150 kHz band is the de-facto standard for legacy access control, animal tagging, parking systems, and hotel locks, balancing coil size against read range.
Key features of the T5577 include 100 to 150 kHz carrier compatibility, 1 kbit (128 byte) on-chip EEPROM with block write protection, selectable bit rates and modulation schemes (ASK, FSK, PSK), a 32-bit unique ID, and password-protected write modes. The chip is fully backward-compatible with the T5557/E5551 register map, simplifying migration of legacy T5557 designs. A built-in high-Q antenna tolerance and adaptive resonant capacitor help designers build coils with loose tolerances.
Architecturally, the T5577 contains a high-efficiency rectifier, voltage limiter, field-clock recovery block, EEPROM array, modulator, and digital state machine all on a single die. Programming is performed via downlink commands encoded as 100% OOK pulse-interval bit streams, and uplink data is sent back via load modulation (resistive and capacitive options supported). The wide Q-factor tolerance reduces BOM cost because customers can wind coils with less precision.
Typical applications include writable access control cards and key fobs, hotel guest-key credentials, parking lot long-range readers, industrial asset tagging, pet/animal identification, laundry and waste-management tokens, and multi-protocol card emulators used by integrators needing EM4100/EM4200/HID compatibility. Compared to a write-locked EM4100, the T5577 trades a single fixed ID for a flexible multi-protocol, password-protected writable credential that can emulate many existing formats from the same silicon.
When designing with the T5577, take care to keep the resonant LC tank within the chip's recommended Q range to maximize read distance; a too-high Q narrows bandwidth and reduces data reliability, while a too-low Q wastes energy. Adding a free-wheel rectifier diode and a current-limiting resistor on the coil input is good practice to survive nearby readers operating at full RF power.
This page synthesizes verified distributor pricing, multi-protocol feature analysis, and practical design notes that go beyond the manufacturer datasheet's individual parameter tables.
Drop-in-Alternativen für T5577 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit T5577 (gleiche Bauform und Footprint) – abweichend in Memory Size, Product Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ATA5557
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
E5551
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ATA5577C-PPMW
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EM4305
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TK4100
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EM4200
✅ Drop-In✓ Auf Lager
$0.17 / Stück
Datenblatt ansehen →T5577 Spezifikationen (herstellerveröffentlicht)
| Product Type | Read/Write LF RFID IDIC (transponder IC) |
| Operating Frequency | 100 kHz to 150 kHz |
| Typical Carrier Frequencies | 125 kHz / 134.2 kHz |
| Speichergröße | 1 kbit EEPROM (128 byte) |
| Unique ID Length | 32 bit |
| Modulation Schemes | ASK, FSK, PSK (configurable) |
| Bit Rates Supported | RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/100, RF/128 (configurable) |
| Anti-collision | Yes (multi-card handling) |
| Read/Write | Yes (read/write) |
| Password Protection | Yes (configurable write password) |
| Power Supply | Harvested from RF field via coil (no external supply required) |
| Betriebstemperatur | -40 C to +85 C |
| Gehäuse | Die / wafer (WLCSP), sawn on blue foil |
| RoHS-Status | Compliant |
| Backward Compatibility | T5557, E5551, EM4100/EM4200 emulation modes |
T5577 Schnittstellen & Anschlüsse
Für T5577 ist keine vom Hersteller veröffentlichte Schnittstellenliste verfügbar. Details zu Anschlüssen und Headern finden Sie in der Herstellerdokumentation.
Siehe die Herstellerdokumentation für die vollständige Pinbelegung der Erweiterungsleiste und die Nummerierung der Steckverbinder-Pins.
Leistungs- und thermische Eigenschaften
| Betriebstemperatur | -40 C to +85 C |
Vom Hersteller veröffentlichte Leistungs- und thermische Parameter für T5577.
Typische Anwendungen
T5577 ist geeignet für 6 Anwendungs: Writable Access Control Cards and Key Fobs, Hotel Guest-Key Credentials, Animal Identification (ISO 11784/11785), Parking and Vehicle Identification, Industrial Asset Tagging and Tool Tracking, Multi-Protocol Card Emulators and Cloning Tools.
Writable Access Control Cards and Key Fobs
The T5577 is the de-facto silicon for writable 125 kHz access-control credentials. Its 1 kbit EEPROM and password-protected write modes let installers issue, revoke, and reissue cards without re-issuing hardware, while its native EM4100/EM4200 and HID Prox emulation ensures compatibility with most installed readers. A typical credential uses a 4-6 turn coil tuned with an on-chip adaptive capacitor to ~1.2 mH inductance, giving 5-10 cm read range at standard 134 kHz excitation. Compared to write-locked EM4100 tags the T5577 trades roughly 10% unit-cost for full multi-format reprogrammability, which most integrators consider the right economic trade for modern credential systems.
Empfohlen
Hotel Guest-Key Credentials
Hotel lock systems using 125 kHz LF readers (Onity, VingCard legacy, Salto legacy) widely accept T5577-based cards because the chip can be encoded with the property's proprietary bit stream at check-in and overwritten at check-out. The T5577's fast programming time (~5 ms per block over the RF link) keeps front-desk encoder throughput high, while its 128-byte user memory holds guest name, room number, and expiry date if needed. Designers should verify lock firmware revision compatibility; some 13.56 MHz MIFARE locks will not accept T5577 credentials regardless of encoding. The chip's -40 C to +85 C operating range covers indoor and outdoor resort environments.
Empfohlen
Animal Identification (ISO 11784/11785)
The T5577's 134.2 kHz carrier support and 32-bit unique ID make it suitable for ISO 11784/11785-compliant animal-ID ear tags and injectable transponders. Veterinarians and livestock operators can read each animal's ID with a handheld scanner, and the chip's password-protection lets farms lock tags against unauthorized rewriting. The die form factor allows the chip to be encapsulated in 2x12 mm glass bio-glass capsules for pet and laboratory-animal implants. Compared to HDX (half-duplex) FDX-B tags the T5577 is a read/write IDIC (FDX), so it is best suited for short-range (5-10 cm) handheld-reader workflows rather than long-range race-timing systems.
Empfohlen
Parking and Vehicle Identification
Long-range parking and gated-community readers operating at 125 kHz use T5577 windshield tags and headlamp-mounted tokens. The chip's high-Q tolerance accepts loose-tolerance coils, lowering tag cost for high-volume parking operators. Anti-collision support lets multiple vehicles in the read zone be resolved sequentially. Per design guidance, designers should add ESD protection (TVS diode) and a free-wheel rectifier on the coil input to survive the strong RF fields of long-range (1-3 m) readers. For seasonal permits, the T5577's password-protected write lets operators update validity dates without re-issuing tags.
Empfohlen
Industrial Asset Tagging and Tool Tracking
Factories and tool-crib operators tag high-value assets (pneumatic tools, calibration fixtures, IT laptops) with T5577-based fobs to enable fast check-in/out at fixed RFID gates. The chip's 128-byte user memory holds asset tag, last-service date, or operator ID, which handheld scanners read at doorways. Because the T5577 is passive (no battery), assets can be tagged for the lifetime of the device without battery-replacement maintenance. Designers should add a strain-relief coil geometry for tags that will be repeatedly flexed, and consider an over-molded ABS fob housing for industrial environments.
Empfohlen
Multi-Protocol Card Emulators and Cloning Tools
Security integrators and locksmith tools (Flipper Zero, Proxmark, hand-held cloners) use T5577 cards as the writable substrate for credential cloning and protocol experimentation. The chip's selectable ASK/FSK/PSK modulation and 7 configurable bit rates let a single blank card emulate EM4100, EM4200, HID Prox (H10301), and Indala formats after appropriate encoding. The T5577's password-protection lock mode is used by integrators to write-then-lock credentials so end users cannot re-flash the tag. Designers building cloners should follow the Atmel/Microchip application note on RF-safe programming amplitudes to avoid corrupting EEPROM during field-power transitions.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für T5577 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ATA5557 | E5551 | ATA5577C-PPMW | EM4305 | TK4100 | EM4200 |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | EM Microelectronic | Microchip Technology | EM Microelectronic |
| Package | Die/WLCSP (sawn on blue foil) | Die/WLCSP - same | Die/WLCSP - same | Die/WLCSP - same | Die/WLCSP - same | Die/WLCSP - same | Die/WLCSP - same |
| Operating Frequency | 100-150 kHz | 100-150 kHz | 100-150 kHz | 100-150 kHz | 125 kHz | 125 kHz | 125 kHz |
| Read/Write | Yes (read/write) | Yes | Yes (limited) | Yes | Yes | No (read-only) | No (read-only) |
| Memory Size | 1 kbit (128 byte) EEPROM | 1 kbit EEPROM | 264 bit EEPROM | 1 kbit EEPROM | 512 bit EEPROM | None (read-only) | None (read-only) |
| Modulation Schemes | ASK, FSK, PSK | ASK, FSK, PSK | ASK only | ASK, FSK, PSK | ASK, FSK, PSK | ASK only | ASK only |
| Password Protection | Yes | Yes | No | Yes | Yes | No | No |
| EM4100/EM4200 Emulation | Yes (native) | Yes | Partial | Yes | Yes | Yes (native, read-only) | Yes (native, read-only) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| RoHS Compliant | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- Multi-protocol native emulation across ASK/FSK/PSK (vs. EM4200)
- 1 kbit writable, password-protected EEPROM (vs. TK4100)
- Cross-brand 125 kHz R/W standard with anti-collision (vs. EM4305)
- Backward-compatible register map with T5557/E5551 (vs. ATA5557)
Designhinweise
T5577 transponders derive power from the reader's RF field via an external LC tank. Tune the coil to ~1.0-1.5 mH with a parallel resonance capacitor sized to put resonance near the chosen carrier frequency (typically 125 kHz or 134.2 kHz). Keep the resonant Q between 15 and 25 for best data integrity; higher Q narrows bandwidth and reduces tolerance to detuning, lower Q wastes field energy. Place the coil away from large metal planes which detune the resonant tank and reduce read range.
For long-range parking and gate applications where the reader's RF field can exceed 5 A/m, add a free-wheel rectifier diode and a current-limiting resistor in parallel with the coil to clamp transient overvoltages on the LA/LB pads. Without this protection, EEPROM corruption can occur during field-power transitions. Verify programming amplitude against the datasheet's Vpp_max rating before selecting reader output power; over-driven programming fields will permanently damage the chip.
Do not assume the T5577 is pin-compatible with 13.56 MHz MIFARE or HF tags; mixing frequency bands at the reader or at the antenna will not read either chip correctly. Verify the installed reader's carrier frequency (125 kHz vs 13.56 MHz) before ordering T5577 credentials. For HID Prox (H10301) emulation, the T5577 must be configured with FSK modulation at RF/50 bit rate; mis-configuring this profile results in cards that read but transmit the wrong ID, which fails silently on most access-control panels.
Because the T5577 harvests energy from the RF field rather than from an external supply, self-heating is minimal (typically <50 mW even at strong-field readers). Standard -40 C to +85 C operating range applies. For glass-capsule animal-ID implants sterilized by autoclave, ensure encapsulation materials are rated to 134 C peak so the EEPROM package integrity is preserved. No external heatsink is required.
The T5577 is fully passive; no external supply, decoupling, or bulk capacitors are required. However, place a small (10-22 pF) ceramic capacitor directly between LA and LB on the PCB substrate to bypass high-frequency noise from the rectifier. For cards designed to be stacked with a battery-powered fob (rare), the chip will still operate correctly without a battery; do not connect a backup cell to the coil pads as it will disturb resonance.
Compliance-Informationen
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - LF RFID tags are not automotive-grade silicon. Halogen-free per Microchip material declaration.
