ATA6664-TAQY 19 Microchip

ATA6663/ATA6664 LIN Transceiver DATASHEET Features Operating range from 5V to 27V Baud rate up to 20Kbaud Improved slew rate control according to LIN specification 2.0, 2.1 and SAEJ2602-2 Fully compatible with 3.3V and 5V devices Atmel ATA6663: TXD Time-out Timer, Atmel ATA6664: No TXD Time-out Timer Normal and Sleep Mode Wake-up capability via LIN bus (90s dominant) External wake-up via WAKE Pin (35s low level) INH output to control an external voltage regulator or to switch the master pull-up Very low standby current during Sleep Mode (10A) Wake-up source recognition Bus pin short-circuit protected versus GND and battery LIN input current < 2A if V is disconnected BAT 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 Packages: SO8, DFN8 Description The Atmel ATA6663 is a fully integrated LIN transceiver complying with the LIN specification 2.0, 2.1 and SAEJ2602-2. The Atmel ATA6664 is an identical version, the only difference is that the TXD-dominant Time-out function is disabled so the device is able to send a static low signal to the LIN bus. It interfaces the LIN protocol handler and the physical layer. The device is designed 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 20Kbaud. Sleep Mode guarantees minimal cur- rent consumption even in the case of a floating bus line or a short circuit on the LIN bus to GND. The ATA6663/ATA6664 feature advanced EMI and ESD performance. 9146I-AUTO-10/14Figure 1. Block Diagram 7 VS RXD Receiver 1 - + 6 LIN Filter Wake up bus timer Short circuit and overtemperature TXD 4 protection TXD Slew rate control Time-Out timer (only ATA6663) V V S S Control unit 5 GND WAKE 3 Wake-up Standby mode timer 2 8 EN INH 1. Pin Configuration Figure 1-1. Pinning SO8, DFN8 RXD 1 8 INH RXD INH EN 2 7 VS EN VS DFN8 SO8 WAKE 3 6 LIN WAKE LIN 3 x 3 TXD 4 5 GND TXD GND Table 1-1. Pin Description Pin Symbol Function 1 RXD Receive data output (open drain) 2 EN Enables normal mode when the input is open or low, the device is in sleep mode 3 WAKE High voltage input for local wake-up request. If not needed, connect directly to VS 4 TXD Transmit data input active low output (strong pull-down) after a local wake-up request 5 GND Ground, heat sink 6 LIN LIN bus line input/output 7 VS Battery supply Battery-related inhibit output for controlling an external voltage regulator or to switch-off the LIN 8 INH master pull-up resistor active high after a wake-up request 2 ATA6663/ATA6664 DATASHEET 9146IAUTO10/14