Microchip Technology ATA5575M1330-DBN

Overview

ATA5575M1330-DBN from Microchip Technology (formerly Atmel) is a contactless read/write low-frequency RFID identification IC operating at 100–150 kHz, featuring 128-bit EEPROM user memory, on-chip 330 pF ±3% antenna capacitor, Manchester-encoded uplink at RF/64 data rate, and gold-bumped die-on-tape packaging for direct coil bonding in access control transponders.

For engineers reviewing the ATA5575M1330-DBN datasheet, ATA5575M1330-DBN pinout, ATA5575M1330-DBN application, or ATA5575M1330-DBN equivalent, this page delivers verified technical context, real-world timing behavior, confirmed memory mapping, validated coil interface specifications, and precise package dimensions for tag design and coil integration.

Technical Context

The ATA5575M1330-DBN implements a passive analog front end with integrated rectifier, clock extractor, and field-gap detector to derive power and decode OOK-modulated downlink commands via pulse-interval encoding. Its HV generator enables byte-wise EEPROM programming using resistive load modulation between Coil 1 and Coil 2.

Memory operation is governed by byte 16 configuration register: ID length (64/128 bit), lock bits (01101b for permanent lock), and modulation mode (fixed Manchester, RF/64). The chip enters dummy-data transmission (9-bit header + 55/119 zeros) when unlocked, and regular read mode only after lock-bit activation.

Key Specifications

Pinout & Package

ATA5575M1330-DBN is supplied as a bare die on 3M 7419 sticky tape, thickness 280 µm, with two gold-bumped terminals (Coil 1 and Coil 2) sized 200 µm × 400 µm for direct coil bonding. No additional package or leadframe is present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ATA5575M1330-DBN, ATA5577C-DBN offers lower unit cost but forfeits field-programmability, while SL2 ICS20-DBN provides ISO compliance and extended memory at the expense of added BOM complexity and reduced antenna integration simplicity.

Availability

ATA5575M1330-DBN is available at Aetrix Electronics and suitable for access control transponders, automotive immobilizer keys, industrial equipment authentication, and asset tracking tags requiring stable component supply across multi-year production cycles.

Supply support for ATA5575M1330-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 full product support, qualification, and documentation for the ATA5575 family of RFID ICs.

The ATA5575 series was designed specifically for cost-sensitive, high-volume LF RFID transponders requiring integrated tuning capacitance, field-programmable memory, and robust Manchester uplink performance in harsh environments.

FAQ

What is the exact on-chip capacitor value for ATA5575M1330-DBN?

The ATA5575M1330-DBN integrates a trimmed on-chip antenna capacitor of 330 pF ±3%, as specified in Section 9.11.1 of the datasheet. This value is laser-trimmed during wafer test and eliminates the need for external capacitors in most 125 kHz coil designs. The '330' in the part number directly denotes this capacitance option, distinguishing it from the 250 pF variant (ATA5575M1250-DBN).

How does the lock-bit mechanism work in ATA5575M1330-DBN?

The ATA5575M1330-DBN uses bits 1–5 of EEPROM byte 16 to implement irreversible memory locking. Setting these bits to '01101b' permanently disables all future write operations to the entire 136-bit EEPROM, including byte 16 itself. Once locked, the ATA5575M1330-DBN transmits only programmed user data - no dummy sequences - ensuring credential immutability in deployed systems.

Can ATA5575M1330-DBN operate at frequencies other than 125 kHz?

Yes - the ATA5575M1330-DBN is specified for full operation across 100–150 kHz per Section 1 and Table 9-1. While typical use is at 125 kHz for access control, its analog front end supports 100 kHz (e.g., some European systems) and 134.2 kHz (limited compatibility) with appropriate coil tuning. Performance metrics like read range and programming reliability remain valid across the full band.

What does the '-DBN' suffix indicate in ATA5575M1330-DBN?

The '-DBN' suffix identifies the package variant: die on sticky tape with 25 µm gold bumps, 280 µm die thickness, and 3M 7419 adhesive backing. This format enables direct wire bonding to custom antenna coils without intermediate substrates or leadframes. It differs from '-DDB' (wafer-on-foil, no bumps) and '-DBB' (wafer-on-foil with gold bumps).

Is ATA5575M1330-DBN compatible with ISO/IEC 11784 or 11785 standards?

The ATA5575M1330-DBN implements the proprietary Atmel UNIQUE data format and is not certified to ISO/IEC 11784 or 11785. However, its 125 kHz carrier, Manchester encoding, and RF/64 data rate align with the physical layer of those standards. System-level compliance depends on reader implementation and protocol stack - the ATA5575M1330-DBN itself provides the baseband signal generation required for interoperability.