Microchip Technology ATA5577M2250C-DBN

Overview

ATA5577M2250C-DBN from Microchip Technology (formerly Atmel) is a contactless read/write low-frequency RFID identification IC operating at 125–134 kHz, featuring 363-bit EEPROM organized in 11 blocks with lock bits, on-chip trimmed antenna capacitor (330 pF typical), and support for ISO/IEC 11784/11785 compatibility in animal ID and access control systems.

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

Technical Context

The ATA5577M2250C-DBN integrates an analog front end with rectifier, clock extractor, field-gap detector, and switchable load modulator between Coil 1 and Coil 2. It supports both Basic and Extended modes with binary-programmable data rates from RF/2 to RF/128.

Its memory architecture includes two pages (Page 0: 8 blocks; Page 1: 4 blocks), where Block 0 holds configuration data, Block 3 of Page 1 stores analog front-end options, and Blocks 1–2 of Page 1 contain factory-programmed traceability data with permanent lock bits.

Key Specifications

Pinout & Package

ATA5577M2250C-DBN uses a bare die format with 200 µm × 400 µm direct coil bonding pads (ATA5577M2 variant), optimized for flip-chip or wire-bonded transponder assembly. No leadframe or molded package is present.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless RFID IDIC applications.

Compared with T5557-TS and ATA5567-PL, ATA5577M2250C-DBN uniquely combines on-chip HV generation, 330 pF capacitor, and M2 pad geometry-making it the sole option for compact, fully passive, direct-coil-bonded ISO-compliant tags requiring field reprogramming.

Availability

ATA5577M2250C-DBN is available at Aetrix Electronics and suitable for access control systems, animal identification tags, and industrial asset tracking requiring stable component supply across multi-year production cycles.

Supply support for ATA5577M2250C-DBN 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 maintains its RFID IC portfolio, delivering high-reliability semiconductor solutions for secure identification and sensing applications worldwide.

The ATA5577 family was designed specifically for passive, low-frequency RFID transponders in harsh environments-targeting animal ID, access control, and industrial tagging where battery-free operation and regulatory compliance are mandatory.

FAQ

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

The ATA5577M2250C-DBN serves as a contactless read/write identification IC (IDIC®) that derives power and communicates bidirectionally via a single external coil at 100–150 kHz. It stores 363 bits of EEPROM data-including configurable user fields and factory-locked traceability blocks-and supports ISO/IEC 11784/11785 compliance for animal ID and access control applications. Its on-chip rectifier, modulator, and HV generator enable fully passive operation without external power sources.

Does the ATA5577M2250C-DBN require external components to operate at 125 kHz?

The ATA5577M2250C-DBN integrates a 330 pF trimming capacitor (±10 pF), allowing direct connection to a resonant coil without discrete capacitors in most 125 kHz designs. External coil inductance must be selected to achieve LC resonance near 125 kHz-typically 1–3 mH depending on target read range and coupling efficiency. No external voltage regulator, clock source, or programming voltage is needed due to on-chip rectification and HV generation.

How does the ATA5577M2250C-DBN handle data security and write protection?

The ATA5577M2250C-DBN implements per-block write protection using dedicated lock bits-one per 33-bit block. Once a lock bit is set, the entire block (including the lock bit) becomes permanently read-only. Block 7 in Page 0 can be configured as a password field, and Blocks 1–2 in Page 1 are factory-programmed and locked by Microchip to prevent tampering. Configuration data in Block 0 is not transmitted during standard reads, adding another layer of data concealment.

Can the ATA5577M2250C-DBN replace the T5551 in existing designs?

Yes-the ATA5577M2250C-DBN is documented as a replacement for e5551/T5551 in most common operation modes, including Basic mode with standard data rates (RF/8, RF/16, etc.) and Manchester modulation. However, full functional equivalence requires validation of specific command sequences, timing margins, and field strength thresholds in the target reader environment, as some extended features (e.g., certain Extended mode configurations) may differ.

What packaging and interconnect options does the ATA5577M2250C-DBN support?

The ATA5577M2250C-DBN is supplied as a bare die with 200 µm × 400 µm bonding pads (ATA5577M2 variant), intended for direct coil bonding or flip-chip assembly onto flexible substrates or antenna carriers. It does not use leadframes, plastic encapsulation, or standard IC packages. This die-level form factor enables ultra-thin, conformal tag construction ideal for implantable or space-constrained applications.