ATA6670-EK Microchip

ATA6670 Dual LIN Transceiver DATASHEET Features Operating range from 5V to 27V Baud rate up to 20Kbaud LIN physical layer according to LIN specification 2.0, 2.1 and SAEJ2602-2 Fully compatible with 3.3V and 5V devices TXD dominant timeout timer Normal and sleep mode Wake-up capability via LIN bus (90s dominant) Very low standby current during sleep mode (10A) Bus pin is overtemperature and short-circuit protected versus GND and battery LIN input current < 2A if VBAT Is disconnected Overtemperature protection High EMC level Interference and damage protection according to ISO/CD 7637 Fulfills the OEM hardware requirements for LIN in automotive applications rev. 1.1 Transceiver 2: additional INH high side switch output and high voltage WAKE input Qualified according to AEC-Q100 Package: DFN14 with wettable flanks (Moisture Sensitivity Level 1) Description The Atmel ATA6670 is a fully integrated dual-LIN transceiver complying with the LIN specification 2.0, 2.1, and SAEJ2602-2. There are two completely independent and sepa- rated LIN transceivers integrated in one package (only the GND pins GND1 and GND2 are internally connected). Each of them interfaces with the LIN protocol handler and the physi- cal layer. The two LIN transceivers are nearly identical, the only difference is an additional WAKE input and an INH output at transceiver 2. The device is designed to handle the low-speed data communication in vehicles, for exam- ple, in convenience electronics. Improved slope control at the LIN driver ensures secure data communication up to 20Kbaud. Sleep mode guarantees minimal current consumption for each transceiver even in the case of a floating bus line or a short-circuit on the LIN bus to GND. The Atmel ATA6670 features advanced EMI and ESD performance. 9204H-AUTO-10/14Figure 1. Block Diagram 14 VS1 Transceiver 1 1 Receiver RXD1 - + 13 Filter LIN1 Wake up bus Short circuit timer and over- 3 temperature TXD1 TXD protection Slew rate control Time-Out Timer Control unit 12 Sleep mode GND1 2 EN1 10 VS2 Transceiver 2 4 Receiver RXD2 - + 9 Filter LIN2 Wake up bus Short circuit timer and over- temperature 7 protection TXD2 TXD Slew rate control Time-Out Timer V S V S Control unit 6 8 Wake-up Sleep mode WAKE2 GND2 Timer 5 11 EN2 INH2 2 ATA6670 DATASHEET 9204HAUTO10/14