Microchip Technology ATA5577M2250C-DBB

Overview

ATA5577M2250C-DBB from Atmel is a contactless read/write low-frequency RFID identification IC operating at 125 kHz, featuring 363-bit EEPROM (11 × 33-bit blocks), on-chip trimmed antenna capacitor, and configurable ISO/IEC 11784/11785 compatibility. It serves as the core transponder IC in passive RFID tags for access control, animal identification, and waste management systems.

For engineers reviewing the ATA5577M2250C-DBB datasheet, ATA5577M2250C-DBB pinout, ATA5577M2250C-DBB application, or ATA5577M2250C-DBB equivalent, key selection factors include its 100–150 kHz RF frequency range, block-wise EEPROM programming with lock bits, load-modulation uplink, OOK pulse-interval downlink decoding, and direct coil bonding pad option (200 µm × 400 µm).

Technical Context

The ATA5577M2250C-DBB integrates an analog front end with rectifier, clock extractor, field-gap detector, and switchable load modulation between Coil 1 and Coil 2. Its HV generator enables EEPROM programming without external high-voltage sources, and the data-rate generator supports binary-programmable rates from RF/2 to RF/128 plus fixed Basic mode rates (RF/8, RF/16, etc.).

Memory organization includes two pages: Page 0 (8 blocks) for configuration and user data, Page 1 (4 blocks) for traceability and analog options. Block 0 holds mode/configuration data not transmitted during reads; Block 3 of Page 1 stores the option register; all blocks include individual lock bits preventing reprogramming once set.

Key Specifications

Pinout & Package

ATA5577M2250C-DBB uses a bare die package with 200 µm × 400 µm direct coil bonding pads (ATA5577M2 variant), optimized for flip-chip or wire-bonded integration into compact RFID transponders. No leadframe or encapsulation is included - the die is mounted directly onto antenna coils.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RFID transponder IC applications.

Compared with T5557 and ATA5567, the ATA5577M2250C-DBB provides superior antenna integration via its on-chip 330 pF capacitor and three-level clamp voltage control, enabling higher read reliability in variable-field environments while maintaining full command-set compatibility with existing T5557-based infrastructure.

Availability

ATA5577M2250C-DBB is available at Aetrix Electronics and suitable for access control systems, animal identification tags, and waste management bin tags requiring stable component supply, long-term data retention, and regulatory-compliant LF RFID functionality.

Supply support for ATA5577M2250C-DBB 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

Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, touch technologies, and secure wireless solutions for embedded applications.

The ATA5577 product line was designed specifically for passive low-frequency RFID transponder applications, emphasizing ease of antenna integration, ISO/IEC 11784/11785 compliance, and robust operation in industrial and outdoor environments.

FAQ

What is the primary function of the ATA5577M2250C-DBB in an RFID system?

The ATA5577M2250C-DBB functions as a contactless read/write identification IC (IDIC®) that operates as a passive transponder. It harvests power from a 125 kHz RF field via its coil interface, stores and retrieves data from its 363-bit EEPROM, and communicates with base station readers using load modulation (uplink) and OOK pulse-interval encoding (downlink). The ATA5577M2250C-DBB is engineered for use in access control, animal ID, and waste management tags where battery-free operation and regulatory compliance are essential.

Does the ATA5577M2250C-DBB require external components to operate?

The ATA5577M2250C-DBB integrates an on-chip 330 pF antenna capacitor, eliminating the need for an external tuning capacitor in most implementations. However, it requires an external LC resonant coil connected between Coil 1 and Coil 2 to form the transponder antenna. No external power supply, clock source, or high-voltage generator is needed - all are derived from the RF field. The ATA5577M2250C-DBB is designed for minimal external BOM in compact tag assemblies.

How is EEPROM memory organized and protected in the ATA5577M2250C-DBB?

The ATA5577M2250C-DBB contains 363 bits of EEPROM arranged in 11 blocks of 33 bits each (32 data bits + 1 lock bit). Memory is split into Page 0 (8 blocks) and Page 1 (4 blocks). Each block's lock bit, once set, permanently prevents further writes to that block - including the lock bit itself. Block 0 holds configuration data; Block 7 can serve as a password; Blocks 1–2 in Page 1 store factory-programmed traceability data. The ATA5577M2250C-DBB enforces block-level programming and lock-bit security without external intervention.

Is the ATA5577M2250C-DBB compatible with existing T5557-based systems?

Yes, the ATA5577M2250C-DBB is explicitly designed for compatibility with T5557 and ATA5567 systems. Its configuration register structure, command set, and Basic/Extended mode operation are identical. It can replace e5551/T5551 in most common operation modes. However, functional validation in the target reader environment is required, as differences in on-chip capacitor value and clamp voltage options may affect field strength sensitivity and read range. The ATA5577M2250C-DBB maintains full protocol-level interoperability while adding integration advantages.

What packaging and mounting options does the ATA5577M2250C-DBB support?

The ATA5577M2250C-DBB is supplied as a bare die with the ATA5577M2 pad layout: 200 µm × 400 µm bonding pads optimized for direct coil bonding or flip-chip assembly. It is not offered in packaged IC formats (e.g., SOIC, QFN). This die-level form factor enables ultra-thin, low-profile RFID tag construction where the silicon is mounted directly onto printed or wound antenna coils. The ATA5577M2250C-DBB requires no leadframe or molding compound, reducing size, weight, and material cost in high-volume tag production.