ATA5580M156-TSMW Microchip

ATA5580 125kHz Transponder with Open Immobilizer Software Stack and AES-128 Encryption DATASHEET Features AES-128 crypto transponder in plastic brick package Includes coil and capacitor for tuned circuit antenna Radio frequency f = 125kHz RF Contactless power supply Contactless bidirectional data communication interface High-performance AES-128 encryption hardware unit Atmel open immobilizer stack 2K EEPROM for secret key storage, field user data and configuration data Error correction code support for NVM 32-bit unique ID Multiple configuration registers Modulation/coding: Biphase, Manchester, QPLM Configurable baud rate 40C to +85C operation temperature LGA-like brick package 9254E-RKE-08/141. Description The Atmel ATA5580 is a smart transponder module with an AES-128 encryption unit, customer EEPROM, a 125kHz LF front end and an LF ferrite antenna for wireless power supply and communication. All components are built up in a single pinless transponder package. The IC contains the highly configurable Atmel open immobilizer software stack. 1.1 Module Schematic The Atmel ATA5580 transponder contains an ultra-low-power transponder IC with an AES-128 engine, an LF Antenna resonant circuit and a buffer capacitor. 1.2 Functional Description Atmel ATA5580 is designed for automotive immobilization applications in remote keyless entry (RKE) keys. The Atmel ATA5580 micro module consists of an ultra-low-power IC with AES-128 encryption engine and immobilizer front end, an LF ferrite antenna and capacitors for the antenna and as supply buffer. The small LGA-like package of the Atmel ATA5580 contains all the components required for the transponder application. Because it is powered by a 125kHz LF field, the IC requires no battery supply. The communication with the chip is also implemented via an LF field. A base station can request data via an LF telegram and the transponder responds with data from its memory or with cipher data via a damping modulation from the LF field. The transponder function is defined by a special Atmel immobilizer stack. Figure 1-1. Block Diagram ATA5580 LF Antenna ATA5580 IC C2 L1 2 ATA5580 DATASHEET 9254ERKE08/14