[原创] Microchip ATA6570高速案CAN收发器解决方案 - 汽车电子,CAN,控制器区域网络, ATA6570 - 中电网 - 新葡京娱乐平台
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关键词:汽车电子 CAN 控制器区域网络 ATA6570

时间:2018-06-04 10:30:59       作者:Microchip       来源:中电网

microchip公司的ATA6570是单独可用具有局部网络的高速控制器区域网络(CAN)收发器,完全和ISO 11898-2, ISO11898-5, ISO11898-6, ISO/DIS 11898-2 (2016)以及SAEJ2962-2兼容,标准CAN数据速率高达1Mbps,CAN FD数据速率高达5Mbps(CAN FD),4Mbps SPI接口,能直接和3.3V-5V MCU接口,主要用在汽车环境.本文介绍了ATA6570主要特性,框图,以及ATAB657XA开发板主要特性,电路图,材料清单和PCB设计图.

The Atmel® ATA6570 is a standalone high speed CAN transceiver that interfaces a Controller Area Network (CAN) protocol controller and the physical two wire CAN bus designed for high speed CAN applications in the automotive environment.

It provides local and enhanced remote wake-up capabilities and is available in a SO14 package. The Atmel ATA6570 has a very low power consumption in Standby and Sleep Mode. Beside local wake-up via WAKE and remote wake-up pattern according to ISO 11898-5, ATA6570 additionally supports ISO11898-6 compliant CAN partial networking. A CAN frame decoder evaluates the bus traffic and checks for a matching frame, that has being configured into registers via the SPI. The device is able to keep the complete ECU in a low power mode even when bus traffic is present until a valid wake-up frame is received. It also features a watchdog and a Serial Peripheral Interface (SPI).

The Atmel ATA6570 is a CAN-FD device and can be easily configured via the SPI as Non-FD (meaning only for Classical CAN), CAN FD silent, CAN FD passive or as CAN FD active device, in order to fulfill the corresponding application requirements.

The VIO pin allows the automatic adjustment of the I/O levels to the I/O level of the connected microcontroller.The SPI interface controls the device and provides status and diagnosis information to the Host MCU.All these features make the Atmel ATA6570 an excellent choice for high speed CAN networks, especially in applications where nodes are always connected with the battery but are only activated when they are really needed in the application.

ATA6570主要特性:

• High speed CAN transceiver fully compliant to ISO 11898-2, ISO11898-5, ISO11898-6, ISO/DIS 11898-2 (2016) and SAEJ2962-2
• Autonomous bus biasing according to ISO 11898-6
• Low electromagnetic emission (EME) and high electromagnetic immunity (EMI)
• Standard CAN data rate up to 1Mbit/s and CAN FD data rate up to 5Mbit/s (CAN FD)
• 4Mbit/s SPI interface
• Differential bus receiver with wide common mode range
• Very low current consumption in Sleep and Standby with fully wake-up capability
• Power-down of the complete node via the INH-output (switching off external voltage regulator(s))
• Six operation modes
– Power off mode
– Microcontroller Reset mode
– Sleep mode
– Standby mode
– Normal mode
– Overtemp mode
• Four wake-up sources
– Local wake-up via pin WAKE
– Remote wake-up pattern according to ISO 11898-5
– Remote wake-up frame according to ISO 11898-6 (selective wake-up)
– Host wake-up via SPI
• Wake-up source recognition
• Transceiver disengages from the bus in over-temperature and low power supply mode
• RXD recessive clamping detection
• Transmit data (TXD) dominant timeout function
• Undervoltage detection on VS, VCC and VIO pins
• Overtemperature protection
• 3.3V to 5V microcontrollers can be interfaced directly via the VIO pin
• Battery supply and CAN bus pins protected against transients according to ISO7637
• High Electro Static Discharge (ESD) Handling Capability on the Bus Pins
• Bus pins short-circuit protected to GND and VCC
• VS operating voltage up to 28V, VS DC supply voltage up to 42V
• Watchdog with independent clock source
• Watchdog can be operated in Window and Timeout mode
– Optional cyclic wake-up in watchdog Timeout mode
– Watchdog automatically re-enabled when wake-up event captured
– Watchdog period selectable
– Watchdog reset period selectable
• Qualified according to AEC-Q100
• Fulfills the OEM Hardware Requirements for CAN Interfaces in Automotive Applications, Rev. 1.3
• Fulfills the OEM Requirements for Partial Networking Rev. 2.2
• SO14 Package

图1. ATA6570简化框图

开发板ATAB657XA

The development board ATAB657XA is a hardware platform to evaluate the new ATA657X CAN device family and it enables users to rapidly prototype and test new CAN designs with the ATA657X ICs.

图2. 开发板ATAB657XA外形图

ATAB657XA开发板主要特性:

• All components necessary to put the ATA6570, ATA6571 or ATA6572 into operation are included
• Placeholders for some optional components for extended functions
• All pins are easily accessible
• Switching into Normal, Standby or Sleep mode via two jumpers (ATA6571)
• Push button included for creating a local wake-up after entering Sleep mode
• LEDs for operation indication
• Ground coulter clip for easy probe connection while measuring with oscilloscope
• Connectors for direct plug-in with the C21-XPRO Xplained board (only ATA6570 and ATA6572 with SPI)

ATAB657XA开发板包括:

• ATAB657XA Development Board (ADM00870)
• Important Information Sheet

图3. ATAB657XA开发板概述图

图4. ATAB657XA开发板电路图
ATAB6570开发板材料清单:


ATAB6571开发板材料清单



ATAB6572开发板材料清单



图5.ATAB657xA开发板PCB设计图:顶层丝印

图6.ATAB657xA开发板PCB设计图:顶层铜和丝印

图7.ATAB657xA开发板PCB设计图:顶层铜

图8.ATAB657xA开发板PCB设计图:底层铜
详情请见:
http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-9340-Can-Van-Networking-ATA6570_Datasheet.pdf.pdf
http://ww1.microchip.com/downloads/en/DeviceDoc/50002672A.pdf
50002672A.pdf
Atmel-9340-Can-Van-Networking-ATA6570_Datasheet.pdf.pdf

 

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