Microchip Technology ATA5575M1330-DBB

Overview

ATA5575M1330-DBB from Microchip (formerly Atmel) is a contactless read/write low-frequency RFID identification IC (IDIC®) operating at 100–150 kHz, designed for passive transponder tags powered and communicated with via a single external coil. It integrates 136-bit EEPROM (17 × 8-bit bytes), Manchester-encoded uplink modulation at RF/64 data rate, on-chip trimmed antenna capacitors (330 pF ±3%), and supports UNIQUE-format ID transmission for access control systems.

For engineers reviewing the ATA5575M1330-DBB datasheet, ATA5575M1330-DBB pinout, ATA5575M1330-DBB application, or ATA5575M1330-DBB equivalent, this page delivers verified technical context, memory mapping, coil interface behavior, lock-bit configuration logic, and real-world transponder design constraints - all grounded in the official 9167G-RFID-08/14 datasheet.

Technical Context

The ATA5575M1330-DBB implements a fully integrated analog front end (AFE) with rectifier, clock extractor, field-gap detector, and switchable load modulator between Coil1 and Coil2. Its controller executes pulse-interval-encoded downlink command decoding (RESET, Read ID, Write Byte, Direct Access) and manages EEPROM byte-wise programming with built-in HV generator and verification cycles.

Memory organization includes 16 user bytes (bytes 0–15), 1 configuration byte (byte 16), and fixed Manchester encoding with RF/64 bit rate. Lock bits (bits 1–5 of byte 16) determine whether the device transmits dummy data (unlocked) or programmed UNIQUE-format ID (locked), with delivery state pre-configured to 0x06 (UNIQUE mode, 64-bit ID, unlocked).

Key Specifications

Pinout & Package

ATA5575M1330-DBB is supplied as a bare die on 6-inch wafer, mounted on foil with ring carrier and 25 µm gold bumps (package code DBB). It has two terminals only: Coil1 and Coil2 - both serve as bidirectional RF interface for power harvesting and load-modulated data transmission. No additional pins, pads, or control signals exist.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATA5575M1330-DBB, ATA5577C-PLW offers greater flexibility in coil tuning but lacks factory-programmed UNIQUE format, while EM4102-TMS provides simpler, lower-power read-only operation at the expense of configurability and security features.

Availability

ATA5575M1330-DBB is available at Aetrix Electronics and suitable for access control cards, vehicle immobilizer key fobs, and industrial asset tags requiring stable component supply, long-term data retention, and gold-bump die-level integration.

Supply support for ATA5575M1330-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

Microchip Technology acquired Atmel in 2016 and maintains full support for the legacy ATA5575M series. The company specializes in secure microcontrollers, analog, and RF solutions for industrial, automotive, and IoT markets.

The ATA5575M product line was designed specifically for battery-free, coil-coupled LF RFID transponders used in physical access, automotive security, and asset tracking - emphasizing robustness, low-power operation, and field-programmable identity.

FAQ

What is the exact package type and mounting form of ATA5575M1330-DBB?

ATA5575M1330-DBB is supplied as a bare die on a 6-inch wafer, mounted on foil with ring carrier and equipped with 25 µm gold bumps (package code DBB). It is not packaged in a leaded or molded enclosure - intended for direct die bonding onto flexible PCBs or antenna substrates using thermosonic or ultrasonic methods.

Does ATA5575M1330-DBB support both 64-bit and 128-bit ID lengths, and how is this configured?

Yes, ATA5575M1330-DBB supports both 64-bit and 128-bit ID lengths. Configuration is controlled by bit 8 of EEPROM byte 16: '0' selects 64-bit mode (transmits bytes 0–7), '1' selects 128-bit mode (transmits bytes 0–15). This setting is user-programmable before locking the memory with the lock bits.

What is the function of the lock bits in ATA5575M1330-DBB, and what happens when they are set?

The lock bits (bits 1–5 of byte 16) permanently disable further EEPROM writes once set to '01101b'. When locked, ATA5575M1330-DBB exits reset into regular read mode and transmits the programmed user data. In unlocked state ('00000b'), it transmits dummy data (header + zeros) - enabling verification before final issuance.

How does ATA5575M1330-DBB achieve contactless power and communication with a single coil?

ATA5575M1330-DBB uses its two terminals (Coil1 and Coil2) to connect directly to an external LC tank coil. The on-chip rectifier converts induced AC voltage into DC supply, while the modulator damps the RF field via resistive loading between the same terminals to transmit data - eliminating need for separate power or data paths.

What is the purpose of the on-chip 330 pF capacitor in ATA5575M1330-DBB, and how does it affect design?

The 330 pF ±3% on-chip capacitor forms part of the resonant LC tank with the external coil, reducing or eliminating the need for discrete capacitors. This simplifies PCB layout, improves antenna tolerance to manufacturing variation, and enables direct coil bonding - especially valuable in compact or conformal tag designs.