Microchip TechnologyATA6581-GTQW1-VAOController Area Network - CAN Transceivers

The ATA6581 is a CAN-LIN System Basis Chip (SBC). One CAN transceiver, a 5V, 150mA low drop voltage regulator, a 5V/3.3V 30mA sensor supply, 1 LIN- transceiver. It is part of the ATA658x family which offers various combinations of LDOs, CAN Transceiver with or without partial networking and LIN Transceiver(s) in one package. The high speed (up to 5Mbit/s) ISO 11898-2: 2016 compliant CAN transceiver is designed for applications in the automotive industry, providing differential transmit and receive capability to (a microcontroller with) a CAN protocol controller. It offers improved electromagnetic compatibility (EMC) and electrostatic discharge (ESD) performance, very low power consumption, 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 5V
• •  Advanced low-power management with local and remote wake-up support, always available
• •  Protection and diagnostic functions including bus line short-circuit detection and battery connection detection

The LIN transceiver is designed according to the LIN specification 2.2A, ISO 17987-4 and SAEJ2602-2, and is able to handle the low-speed data communication in vehicles (for example, in convenience electronics). Improved slope control at the LIN driver ensures secure data communication up to 20 Kbaud.

All devices from this family offer low-power modes in order to minimize current consumption in applications that are continuously connected to the battery. A wake-up from low-power mode is possible via a messages on the buses and via high-voltage wake-up pins.

Features:

High-speed CAN transceiver fully compliant to ISO 11898-2: 2016

• •  Standard CAN data rate up to 1Mbit/s and CAN FD data rate up to 5Mbit/s (CAN FD)
• •  Differential bus receiver with wide common mode range
• •  Transmit data (TXD) dominant time-out function
• •  Autonomous bus biasing in accordance with ISO 11898-2:2016
• •  RXD recessive clamping detection
• •  The CAN transceiver disengages from the bus in over temperature and low power supply mode
• •  Bus pins short-circuit protected to GND and VCC

LIN transceiver according to LIN 2.2A, ISO 17987-4 and SAEJ2602-2

• •  TXD time-out timer
• •  Bus pin short-circuit protected versus GND and battery
• •  Wake-up capability via LIN bus (100μs dominant)
• •  Low electromagnetic emission (EME) and high electromagnetic immunity (EMI)
• •  High electrostatic discharge (ESD) handling capability on the bus pins

4Mbit/s SPI interface

Very low current consumption in Sleep/Standby mode with full wake-up capability

Five operating modes: Power-off, µC reset, Sleep, Standby, Normal mode

• •  Various wake-up sources
• •  High voltage local wake-up inputs
• •  CAN remote wake-up pattern compliant with ISO 11898-2: 2016
• •  LIN bus remote wake-up
• •  Wake-up source recognition

Undervoltage detection on VS, VCC and VCC_SENSOR pins

CAN, LIN, VCC and VCC_SENSOR regulators over temperature protection and selective over temperature shutdown

Battery supply and bus pins protected against transients according to ISO7637

VS operating voltage up to 28V, VS DC supply voltage up to 40V

Watchdog with µC independent clock source

• •  Watchdog can be operated in window and time-out mode
• •  Optional cyclic wake-up in watchdog time-out mode
• •  Watchdog period selectable
• •  Watchdog reset pulse length selectable

Limp Home (LH) – VCC independent high voltage failure output

5V 150 mA low dropout voltage regulator - VCC LDO

• •  ±2% accuracy
• •  Current limiting above 150 mA
• •  Max. RDSon of output transistor 5Ω
• •  Short-circuit protected

5V/3.3V 30 mA sensor supply voltage – VCC_SENSOR

• •  ±2% accuracy
• •  Current limiting above 30 mA
• •  Output voltage level configurable via SPI
• •  Excellent transient response with a ceramic output load capacitor
• •  Protected against short-circuits to GND and to the battery

High ESD robustness

In- and output Reset pin (NRES) with variable reset length to support a variety of microcontrollers

Pin and footprint compatibility for the complete family

Packages: DFN18

Qualified according to AEC-Q100