ATA6561-EK Microchip

APPLICATION NOTE ATA6560-EK, ATA6561-EK ATAN0103 Introduction The development board for the Atmel ATA6560 and ATA6561 enables users to rapidly carry out prototyping and testing of new CAN designs with the Atmel ATA6560 and Atmel ATA6561 high-speed CAN transceivers. Figure 1. Atmel ATA6560-EK, ATA6561-EK Development Board The Atmel ATA6560/ATA6561 is a high-speed CAN transceiver that provides an interface between a controller area network (CAN) protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed (up to 5Mbit/s) automotive CAN applica- tions delivering differential transmit and receive capability to (a microcontroller with) a CAN protocol controller. It offers superior electromagnetic compatibility (EMC) and electrostatic discharge (ESD) performance, as well as features such as: Ideal passive behavior to the CAN bus when the supply voltage is off Direct interfacing to microcontrollers with supply voltages from 3V to 5V (ATA6561) 9310E-AUTO-10/16 Three operating modes together with dedicated fail-safe features make the Atmel ATA6560/ATA6561 an excellent choice for all types of high-speed CAN networks, especially in nodes requiring low-power mode with wake-up capability via the CAN bus. The Atmel ATA6560/ATA6561 is available in a SO8 package as well as in a DFN8 package for space-saving application, as shown in Figure 2 and Figure 3. There are footprints for both package types on the development board. Figure 2. SO8 Pinning TXD 1 8 STBY TXD 1 8 STBY GND 2 7 CANH GND 2 7 CANH ATA6561 ATA6560 VCC 3 6 CANL VCC 3 6 CANL RXD 4 5 VIO RXD 4 5 NSIL Figure 3. DFN8 Pinning TXD STBY TXD STBY GND CANH GND CANH ATA6561 ATA6560 VCC CANL VCC CANL RXD VIO RXD NSIL The CAN transceiver has the following features: Fully compliant with ISO 11898-2,-5 and SAE J2284 Low electromagnetic emission (EME) and high electromagnetic immunity (EMI) Communication speed up to 5Mbit/s Differential receiver with wide common-mode range Silent Mode (receive only mode, only available at the ATA6560) Standby mode Remote wake-up capability via CAN bus Functional behavior predictable under all supply conditions Transceiver disengages from the bus when not powered up RXD recessive clamping detection High electrostatic discharge (ESD) handling capability on the bus pins Bus pins protected against transients in automotive environments Transmit data (TXD) dominant time-out function Undervoltage detection on VCC and VIO pins CANH/CANL short-circuit and overtemperature protected 2 ATAN0103 APPLICATION NOTE 9310EAUTO10/16