Atmel ATA6616C/ATA6617C is a System-in-Package （SiP） product， which is particularly suited for complete LIN-bus node applications. It consists of two ICs in one package supporting highly integrated solutions for in-vehicle LIN networks. The first chip is the LINsystem-basis-chip （LIN-SBC） ATA6624， which has an integrated LIN transceiver， a 5V regulator （85mA） and a window watchdog. The second chip is an automotive microcontroller from Atmel’s series of AVR 8-bit microcontroller with advanced RISC architecture， the Atmel ATtiny87 with 8-Kbytes and the Atmel ATtiny167 with 16-Kbytes flash memory. All pins of the LIN system basis chip as well as all pins of the AVR microcontroller are bonded out to provide customers the same flexibility for their applications as they have when using discrete parts. In Section 1. “Atmel ATA6616C/ATA6617C LIN System in Package Solution （SIP）” on page 3 you will find the pin configuration for the complete SiP. In Section 3. “LIN System-basischip Block” on page 7 the LIN SBC is described， and in Section 4. “Atmel ATtiny87/ATtiny167 Microcontroller Block for Atmel ATA6616C/ATA6617C” on page 26 the AVR is described in detail.