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Microchip Technology TK5552A-PP
- Part No.:
- TK5552A-PP
- Manufacturer:
- Microchip Technology
- Category:
- RFID Transponders, Tags
- Package:
- Datasheet:
-
TK5552A-PP.pdf
- Description:
- RFID TAG R/W 100-150KHZ
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
TK5552A-PP from Microchip Technology (formerly Atmel) is a fully integrated, contactless read/write RFID transponder in a plastic cube package, implementing a 1056-bit EEPROM-based IDIC with inductive power harvesting at 125 kHz, Manchester/PSK modulation, and configurable block addressing for industrial identification systems.
For engineers reviewing the TK5552A-PP datasheet, TK5552A-PP pinout, TK5552A-PP application, or TK5552A-PP equivalent, this page delivers verified functional identity, confirmed RF interface behavior, exact memory organization (32 × 33-bit blocks), real-world operating distance constraints (0–5 cm), and validated alternative transponders for asset tracking and automation systems.
Technical Context
The TK5552A-PP operates as a two-terminal, coil-coupled transponder IC with no external power supply - deriving energy and clock from a 125 kHz RF field via its integrated LC antenna. Its analog front end includes rectifier, ESD protection (>8 kV HBM), clock extractor, and field-gap detector enabling bidirectional communication.
Uplink uses reflective load (backscatter) modulation on Clock-A/Clock-B terminals; downlink decodes amplitude-modulated gaps using internal field-clock counting (16–32 FC = '0', 48–64 FC = '1'). Configuration is stored in EEPROM Block 0 and governs data rate (RF/16 or RF/32), start-up delay (1 ms or 65 ms), modulation type (Manchester/PSK), and MAXBLK range (0 to 31).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Carrier Frequency | 125 kHz nominal (100–150 kHz operational range); defines resonant LC tuning and base station compatibility |
| EEPROM Capacity | 1056 bits total: 32 addressable blocks × 33 bits (32 data + 1 lock bit); Block 0 holds configuration, Blocks 1–31 store user data |
| Data Rate Options | RF/16 (7.81 kHz typical) or RF/32 (3.91 kHz typical); selected via DR bit in Block 0; impacts uplink speed and field stability |
| Modulation Schemes | Manchester (default) or PSK; configured via MS bit in Block 0; determines encoding logic and reader IC compatibility (e.g., U2270B) |
| Start-up Delay | Configurable 1 ms or 65 ms (via SD bit); controls time from field exposure to first data transmission, critical for multi-tag environments |
| Programming Time | 18 ms per block (typical); includes erase, write, and auto-verify; ensures data integrity without host supervision |
| Operating Temperature | –25°C to +75°C; validated for industrial enclosures and medical equipment housings without thermal derating |
Pinout & Package
TK5552A-PP is a two-terminal device housed in a plastic cube package with integrated ferrite-core coil and tuning capacitor. The only electrical interfaces are the two coil connection terminals: Clock-A and Clock-B - serving jointly as power input, clock source, and bidirectional data path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Clock-A | Coil terminal A / RF interface | Connects to one end of integrated LC antenna; carries induced AC voltage for rectification and serves as modulation load node |
| Clock-B | Coil terminal B / RF interface | Connects to other end of integrated LC antenna; completes resonant circuit and enables backscatter damping control |
Key Features
| Feature | Design Value |
|---|---|
| Contactless power & data | Eliminates batteries and wiring - powered solely by 125 kHz RF field; supports full read/write cycles without external supply |
| Block-level write protection | Each of 32 EEPROM blocks has dedicated lock bit; prevents accidental overwrite while allowing selective reprogramming of unlocked blocks |
| Configurable cyclic data stream | MAXBLK setting (0–31) in Block 0 defines which blocks transmit continuously - enables dynamic payload sizing for different asset IDs |
| Direct access command | Opcode 11 + 5-bit address (7-bit downlink) reads any single block instantly - bypasses MAXBLK limit for diagnostics or targeted updates |
| Modulation defeat mode | MD bit disables uplink transmission while preserving downlink capability - useful for EAS (electronic article surveillance) integration |
Applications
| Industrial Asset Tracking | Medical Equipment ID |
|---|---|
|
Use Scenario: Permanent tagging of CNC machines, robotic arms, and calibration tools in factory floors where barcode labels degrade or require line-of-sight scanning. IC Role / Device Role / Timing Role: Passive transponder providing unique, rewritable ID and maintenance history via contactless uplink; synchronized to 125 kHz base station timing. Use Value: Enables automated tool verification before machining cycles, reducing setup errors and supporting ISO 9001 traceability without battery replacement or manual entry. |
Use Scenario: Embedding in MRI-compatible surgical instruments and infusion pumps to store sterilization count, firmware version, and usage logs. IC Role / Device Role / Timing Role: Read/write IDIC storing tamper-proof service records; operates reliably inside shielded enclosures due to low-frequency magnetic coupling. Use Value: Eliminates paper logs and manual database entry; allows real-time validation of instrument readiness during pre-op checks using handheld 125 kHz readers. |
| Process Control Valves | Automated Test Fixtures |
|
Use Scenario: Mounting on pneumatic/hydraulic valves in chemical plants to log actuation cycles, calibration dates, and pressure thresholds. IC Role / Device Role / Timing Role: Transponder IC interfacing with U2270B-based readers; uses Manchester encoding for noise immunity in EMI-heavy environments. Use Value: Supports predictive maintenance by correlating valve wear data (stored in Blocks 1–8) with SCADA system timestamps - no wired sensors required. |
Use Scenario: Integration into PCB test jigs to identify fixture variants, track calibration status, and auto-load test scripts based on DUT configuration. IC Role / Device Role / Timing Role: Two-terminal IDIC responding within 1 ms of field activation; uses RF/16 data rate for fast block reads during high-throughput production testing. Use Value: Prevents test program mismatches by validating fixture identity before test execution - reduces false-fail rates and rework in automotive electronics manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar R/W transponder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TK5550-PP | Legacy 512-bit EEPROM; supports only 3-bit address downlink (vs. 5-bit); no MAXBLK configurability; fixed RF/32 rate | Limited to simple ID-only use cases; cannot support rolling-code or multi-block data structures required by TK5552A-PP | Select when cost sensitivity outweighs memory and flexibility needs; verify reader compatibility with opcode 10 protocol |
| EM4102 | Read-only (RO) transponder; no EEPROM, no write capability; 64-bit fixed ID; no configuration register or lock bits | Suitable only for static identification - cannot store maintenance logs, calibration data, or rolling codes | Choose only for basic access control or inventory tagging where data immutability is acceptable and write functionality is unnecessary |
Compared with TK5552A-PP, TK5550-PP offers lower memory and reduced protocol flexibility but maintains mechanical and RF-field compatibility; EM4102 eliminates programming complexity entirely but sacrifices all data update capability - making TK5552A-PP the sole option for field-updatable, multi-block industrial tagging.
Availability
TK5552A-PP is available at Aetrix Electronics and suitable for industrial asset management, medical equipment ID, and process control applications requiring stable component supply, long-term data retention (10 years), and proven interoperability with U2270B-based readers.
Supply support for TK5552A-PP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology acquired Atmel in 2016 and continues to support legacy RFID products including the TK5552 family. The company specializes in secure microcontrollers, analog, and wireless solutions for industrial and automotive markets.
The TK5552 product line was designed for closed-coupled, low-frequency RFID systems in harsh environments - emphasizing robustness, contactless programmability, and seamless integration with existing 125 kHz infrastructure like U2270B reader ICs.
FAQ
What is the exact memory structure of the TK5552A-PP?
The TK5552A-PP contains 1056 bits of EEPROM organized into 32 blocks of 33 bits each (32 data bits + 1 lock bit). Block 0 stores configuration settings (start-up delay, data rate, modulation type, MAXBLK), while Blocks 1–31 hold user-programmable data. All blocks are individually addressable and lockable.
Does the TK5552A-PP require an external antenna or coil?
No - the TK5552A-PP is supplied in a plastic cube package with a fully integrated ferrite-core coil and tuning capacitor. It requires no external components to operate; the Clock-A and Clock-B terminals connect directly to the built-in LC circuit for power harvesting and bidirectional communication.
How does the TK5552A-PP handle data integrity during programming?
The TK5552A-PP performs automatic verification after each block write: it reads back the programmed data and compares it to the original. If verification fails, the device enters modulation defeat mode (no uplink) until a new downlink start gap resets it - preventing corrupted data from being reported.
Can the TK5552A-PP be used with readers other than the U2270B?
Yes - the TK5552A-PP is compatible with any 125 kHz base station supporting ISO/IEC 18000-2 or proprietary protocols using Manchester or PSK modulation at RF/16 or RF/32 rates. Its opcode set (11, 10, 00, 01) and gap-based downlink are widely implemented across industrial reader ICs.
What is the maximum reliable read/write distance for the TK5552A-PP?
With standard U2270B demo hardware, the TK5552A-PP achieves 0–5 cm reliable operation. Distance depends on reader coil size, field strength, and environmental shielding. For >5 cm, use multi-coil reader designs or higher-Q antennas - the TK5552A-PP itself supports field strengths up to 600 A/m without modulation loss.
TK5552A-PP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- TK5552
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Style:
- -
- Technology:
- Passive
- Frequency:
- 100kHz ~ 150kHz
- Memory Type:
- Read/Write
- Writable Memory:
- -
- Standards:
- -
- Operating Temperature:
- -25°C ~ 75°C
- Size / Dimension:
- -
TK5552A-PP FAQ
1.How can I place an order for TK5552A-PP through Aetrix?
Please submit a Request for Quotation (RFQ) for TK5552A-PP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TK5552A-PP reliable?
The price and inventory of TK5552A-PP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TK5552A-PP is usually 5 days.
3.What payment methods are accepted for TK5552A-PP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TK5552A-PP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TK5552A-PP?
TK5552A-PP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TK5552A-PP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TK5552A-PP?
For technical support, including TK5552A-PP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TK5552A-PP requirements.
6.How does Aetrix verify that TK5552A-PP is sourced from the original manufacturer or authorized distributors?
All TK5552A-PP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TK5552A-PP meets industry standards.
7.What is the process for return or replacement of TK5552A-PP?
All TK5552A-PP units undergo pre-shipment inspection (PSI). If there is an issue with TK5552A-PP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TK5552A-PP part is unused and in its original packaging.
Return procedure for TK5552A-PP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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