ATA5795

www.DataSheet4U.com Features AES-128 Immobilizer Transponder for Use in Contactless Mode CMMI Certified. Configurable, Secure, Open Source Immobilizer Stack Energy Supply and Bi-directional Communication via LF Link (125 kHz) 32-bit Unique Identification Number Integrated Codecs for Enhanced LF Communication Range Fast AES-128 Cryptographic Engine for Both Immobilizer and RKE Functions Two 128-bit Secret Keys One 128-bit Transport Key Embedded Ultra-low-power Atmel® AVR® Microcontroller Fractional-N RF Transmitter Covering 315 MHz and 433 MHz 8-Kbyte Flash for User Application (6 Kbytes) and Immobilizer (2 Kbytes) 2112-byte EEPROM for User Data Storage (2 Kbytes) and Device Configuration (64 Bytes) Locking Mechanism Protects both Flash and EEPROM Contents Error Correction Code (ECC) Engine Protects both the Flash and EEPROM Units 1-wire Debug Interface Integrated with AVR Development Tools Automotive Grade C Compiler 1.9 to 3.6 V Battery Voltage Range (in Contact Mode) –40°C to +105°C Operating Temperature Small QFN 32 - 5x5 Package 1. Description ATA5795 is a smart Remote Keyless Entry (RKE) device that includes an embedded ultra-low-power AVR 8-bit microcontroller, a fractional-N RF transmitter and an LF immobilizer interface in a single QFN32 package. Furthermore, the device has an integrated AES-128 cryptography hardware engine, which is accessible by both the immobilizer and the RKE unit. The immobilizer interface can run in contac...