Microchip Technology ATA5575M1330-DDB

Overview

ATA5575M1330-DDB from Microchip Technology (formerly Atmel) is a contactless read/write low-frequency RFID identification IC optimized for 125 kHz access control systems. It features 128-bit EEPROM user memory (16 bytes), on-chip 330 pF ±3% antenna capacitor, Manchester-encoded uplink at RF/64 data rate, and operates with a single coil for power harvesting and bidirectional communication.

For engineers reviewing the ATA5575M1330-DDB datasheet, ATA5575M1330-DDB pinout, ATA5575M1330-DDB application, or ATA5575M1330-DDB equivalent, this device is selected for secure, field-powered transponder designs requiring guaranteed UID traceability, lockable memory, and high Q-antenna tolerance in industrial and automotive access systems.

Technical Context

The ATA5575M1330-DDB integrates a rectifier, clock extractor, HV generator, and Manchester modulator to enable passive operation from a 100–150 kHz RF field. Its analog front end supports load modulation uplink and pulse-interval-encoded OOK downlink using field-gap detection.

Memory architecture includes 17-byte EEPROM (136 bits): bytes 0–15 hold user/data/parity/header (UNIQUE format), byte 16 holds configuration with lock bits and ID length control. Programming requires four-phase erase-verify-write-verify cycles with typical 5.6 ms duration.

Key Specifications

Pinout & Package

ATA5575M1330-DDB is supplied as a bare die on 6-inch sawn wafer on foil with ring carrier (thickness ≈150 µm). It has two terminals only: Coil 1 and Coil 2 - both serve as bidirectional RF interface for power harvesting and load-modulated data transmission. No additional pins or bond pads beyond the coil terminals are present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATA5575M1330-DDB, ATA5577C-PLW requires external tuning components and offers no built-in UID traceability, while EM4102 lacks programmability, lock security, and the UNIQUE data structure - making ATA5575M1330-DDB the only option supporting production-traceable, field-lockable, capacitor-integrated transponders.

Availability

ATA5575M1330-DDB is available at Aetrix Electronics and suitable for access control systems, automotive key fobs, industrial asset tagging, and secure document authentication requiring stable component supply across multi-year production cycles.

Supply support for ATA5575M1330-DDB 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 ATA5575M1 series. The company specializes in secure microcontrollers, analog, and RFID solutions for industrial and automotive markets.

The ATA5575M1 product line was designed specifically for battery-free, high-reliability LF RFID transponders in access control and secure identification - emphasizing UID traceability, memory lock security, and antenna integration.

FAQ

What is the exact package form of ATA5575M1330-DDB?

ATA5575M1330-DDB is supplied as a bare die on a 6-inch sawn silicon wafer mounted on UV-release foil with plastic ring carrier (thickness ≈150 µm). It contains no leadframe or molded package - only two bond pads (Coil 1 and Coil 2) sized 200 µm × 400 µm, optionally with 25 µm gold bumps for direct coil bonding. This die format enables ultra-thin, flexible tag construction.

Does ATA5575M1330-DDB include a factory-programmed unique ID?

Yes, ATA5575M1330-DDB ships with a factory-programmed UNIQUE format UID stored in EEPROM bytes 0–15. The UID encodes Atmel's lot number, wafer number, and die-on-wafer position - ensuring globally unique, production-traceable identification. Byte 16 is pre-configured to 0x06 (UNIQUE mode, 64-bit ID, memory reprogrammable) and can be locked post-programming.

What is the function of the on-chip 330 pF capacitor in ATA5575M1330-DDB?

The on-chip 330 pF ±3% capacitor in ATA5575M1330-DDB forms part of the resonant LC tank with the external antenna coil. It eliminates the need for an external tuning capacitor, reduces component count, improves manufacturing yield, and enhances read-range consistency by minimizing sensitivity to coil inductance variation and PCB parasitics.

How is memory protection implemented in ATA5575M1330-DDB?

ATA5575M1330-DDB implements memory protection via lock bits (bits 1–5 of EEPROM byte 16). Setting them to '01101b' permanently disables all write operations to the entire 136-bit EEPROM - including byte 16 itself. Once locked, the device transmits only programmed user data and cannot be reprogrammed, even via RF field commands.

What communication protocols does ATA5575M1330-DDB support?

ATA5575M1330-DDB supports Manchester-encoded uplink (tag-to-reader) at fixed RF/64 data rate and pulse-interval-encoded downlink (reader-to-tag) using Atmel's proprietary field-gap protocol. Downlink commands include RESET, Read ID, Write Byte, Direct Access, and Read Upper Bytes - all decoded via OOK-modulated field interruptions with defined gap timing (e.g., 25 FC for '0', 58 FC for '1' at 125 kHz).