Freescale公司的MC33662是汽車LIN總線,支持汽車網(wǎng)絡(luò),和LIN協(xié)議標(biāo)準(zhǔn)1.3, 2.0, 2.1和SAEJ2602-2CAN兼容,工作電壓VSDUP 7-18VDC,功能高達27VDC,在卸載時能處理40V,LIN總線能經(jīng)受15.0kV ESD IEC61000-4-2,WAKE引腳能經(jīng)受20kV ESD,VSUP引腳能經(jīng)受25kV ESD,目標(biāo)應(yīng)用在汽車儀表盤,HVAC,汽車照明,門窗提升和座位控制, 安全氣袋,車體控制模塊和中央網(wǎng)關(guān),駕駛員信息系統(tǒng)和動力總成于混合系統(tǒng)以及LIN連接系統(tǒng).本文介紹了MC33662主要特性,簡化方框圖,應(yīng)用電路以及主/從節(jié)點典型應(yīng)用電路.
The Local Interconnect Network (LIN) is a serial communication protocol, designed to support automotive networks in conjunction with a Controller Area Network (CAN). As the lowest level of a hierarchical network, LIN enables cost-effective communication with sensors and actuators when all the features of CAN are not required. The three 33662 versions are designed to operate at different maximum baud rates. The MC33662LEF and MC33662SEF offer a normal baud rate (20 kbps), and the MC33662JEF, a slow baud rate (10 kbps). They integrate a fast baud rate (above 100 kbps), as reported by the RXD pin for test and programming modes. They provide excellent EMC (Electromagnetic Compatibility) and Radiated Emission performance, ESD (Electrostatic Discharge) robustness, and safe behavior, in the event of a LIN bus short-to-ground, or a LIN bus leakage during low-power mode.
MC33662主要特性:
•Operational from a VSUP of 7.0 to 18V DC, functional up to 27V DC, and handles 40 V during Load Dump
•Compatible with LIN Protocol Specification 1.3, 2.0, 2.1, and SAEJ2602-2
•Active bus wave shaping, offering excellent radiated emission performance
•Sustains up to 15.0 kV minimum ESD IEC61000-4-2 on the LIN Bus, 20 kV on the WAKE pin, and 25 kV on the VSUP pin
•Very high immunity against electromagnetic interference
•Low standby current in Sleep mode
•Over-temperature protection
•Local and remote Wake-up capability reported by the RXD pin
•Fast baud rate selection reported by RXD pin
•5.0 V and 3.3 V compatible digital inputs without any required external components
MC33662目標(biāo)應(yīng)用:
Automotive
Instrument Cluster
Heating Ventilation and Air Conditioning (HVAC)
Automotive Lighting
Doors, Window Lift and Seat Control
Airbags
Body Control Module and Central Gateway
Body Electronics
Driver Information Systems
Powertrain and Hybrid Systems
Gasoline and Diesel Engine Management
Hybrid Electric Vehicles
Body Electronics
Driver Information Systems
Powertrain and Hybrid Systems
Connectivity
Local Interconnect Network (LIN)
圖1.MC33662簡化方框圖
圖2.MC33662 LIN接口
圖3.MC33662主LIN總線簡化應(yīng)用電路圖
圖4.MC33662主節(jié)點典型應(yīng)用電路
圖5.MC33662從節(jié)點典型應(yīng)用電路
詳情請見:
http://www.freescale.com/files/analog/doc/data_sheet/MC33662.pdf
