Atmel公司的ATA6617是一款系統(tǒng)級封裝(SIP)解決方案，在單個QFN 5mm × 7mm 封裝中整合了ATA6624 LIN 系統(tǒng)基礎(chǔ)芯片 (system basis chip, SBC) 與AVR微控制器 (ATtiny167)，其中ATA6624 LIN SBC 包含LIN收發(fā)器、穩(wěn)壓器和看門狗。采用這種系統(tǒng)級封裝解決方案，客戶只需一塊IC就能夠創(chuàng)建完整的LIN節(jié)點(diǎn)。本文介紹了ATA6617主要特性,系統(tǒng)應(yīng)用框圖以及ATA6617–EK開發(fā)板主要特性和電路圖。

ATA6617是一款系統(tǒng)級封裝(SIP)解決方案，在單個QFN 5mm × 7mm 封裝中整合了 ATA6624 LIN 系統(tǒng)基礎(chǔ)芯片(system basis chip, SBC) 與AVR微控制器(ATtiny167)，其中ATA6624 LIN SBC 包含 LIN 收發(fā)器、穩(wěn)壓器和看門狗。采用這種系統(tǒng)級封裝解決方案，客戶只需一塊IC就能夠創(chuàng)建完整的LIN節(jié)點(diǎn)。新器件基于愛特梅爾的第二代LIN IP，具有出色的EMC和ESD性能，專為低成本LIN從節(jié)點(diǎn)應(yīng)用而優(yōu)化，并包含一個功能強(qiáng)大的帶有集成硬件程序的LIN UART，可將LIN的代碼量減少到約1 kB 閃存，并把中斷發(fā)生減到最少。

ATA6617主要特性:

帶有LIN SBC

LIN收發(fā)器，同類最佳電磁兼容(EMC)性能

LIN、Wake和Supply (VS) 引腳上ESD級別更高

線性低壓降穩(wěn)壓器

Window看門狗

符合LIN 2.0和SAE J2602-2標(biāo)準(zhǔn)

帶有AVR微控制器

16 Kbyte閃存

硬件LIN UART

11路單端/ 8路差分10位 ADC

512-Byte 真正EEPROM

512-Byte內(nèi)部SRAM

低功耗模式

多種定時器

主要優(yōu)點(diǎn)

PCB 尺寸要求最小

產(chǎn)品易于使用

降低總體系統(tǒng)成本

由于LIN協(xié)議處理不占用資源，目標(biāo)應(yīng)用擁有最大 CPU 資源和閃存

應(yīng)用:

汽車

工業(yè)

醫(yī)療

圖1. ATA6617系統(tǒng)應(yīng)用框圖

ATA6617 – EK Development Board V1.1

The development board for the ATA6617 IC is designed to give designers a quick start with the ATA6617 IC and to enable prototyping and testing new LIN designs.

The ATA6617 is a dual-chip System-in-Package (SIP) product, which is particularly suited for complete LIN bus slave and master node applications. It supports highly integrated solutions for in-vehicle LIN networks. The first chip is the LIN-system-basis-chip (LIN SBC) ATA6624, which has an integrated 5V voltage regulator, a window watchdog, and a fully integrated LIN transceiver, in compliance with the LIN specification 2.1. The second chip is an automotive microcontroller from Atmel’s series of AVR 8-bit microcontrollers with advanced RISC architecture (ATtiny167 with 16K flash). All pins of both integrated chips are bonded out to provide customers the same flexibility for their applications as they have when using discrete parts.

ATA6617–EK 開發(fā)板特性:

All Necessary Components to Put the ATA6617 in to Operation Are Included

Placeholders for Some Optional Components for Extended Functions Included

All Pins Easily Accessible

Easily Adaptable Watchdog Times by Replacing a Single Resistor

Possibility to Activate an External NPN-transistor to Boost the Output Current of the Voltage Regulator (Jumper JP3)

Possibility to Select between Master or Slave Operation (Mounting D2 and R1)

Possibility to Mount an External Quartz to Handle Time-critical Applications (Not Necessary for LIN Communication)

Push Button Included to Create a Local Wake-up after Entering Sleep or Silent Mode

Ground Coulter Clip for Connecting Probes when Measuring with the Oscilloscope

圖2. ATA6617 – EK 開發(fā)板外形圖

ATA6617 - EK Development Board

圖3.ATA6617–EK 開發(fā)板電路圖