ATA6661 Datasheet, PDF (1/15 Pages) ATMEL Corporation – LIN TRANSCEIVER

Features
• Operating Range from 5 V to 18 V
• Baud Rate up to 20 Kbaud
• Improved Slew Rate Control According to LIN Specification 2.0
• Fully Compatible with 3.3 V and 5 V Devices
• Dominant Time-out Function at Transmit Data (TXD)
• Normal and Sleep Mode
• Wake-up Capability via LIN Bus (90 µs Dominant)
• External Wake-up via WAKE Pin (130 µs Low Level)
• Control of External Voltage Regulator via INH Pin
• Very Low Standby Current During Sleep Mode (10 µA)
• 60 V Load Dump Protection at LIN Pin (42-V Power Net)
• Wake-up Source Recognition
• Bus Pin Short-circuit Protected versus GND and Battery
• LIN Input Current <3 µA if V_BAT Is Disconnected
• Overtemperature Protection
• High EMC Level
• Interference and Damage Protection According to ISO/CD 7637
• ESD HBM 6 kV at LIN Bus Pin and Supply VS Pin
LIN Transceiver
ATA6661
Description
The ATA6 66 1 is a fu lly int egrat ed LIN tran sce iver acc or din g to th e L IN
specification 2.0. It interfaces the LIN protocol handler and the physical layer. The
device is designed to handle the low-speed data communication in vehicles, e.g., in
convenience electronics. Improved slope control at the LIN bus ensures secure data
communication up to 20 kBaud with an RC-oscillator for protocol handling. In order to
comply with the 42-V power net requirements, the bus output is capable of withstand-
ing high voltages. Sleep mode guarantees minimal current consumption.
Figure 1. Block Diagram
ATA6661
RXD ¹
Receiver
7 VS
Filter
6 LIN
TXD 4
VS
WAKE 3
TXD
Time-out
Timer
Wake-up
Timer
Wake-up bus timer
Slew rate control
Control unit
Standby mode
2
EN
Short circuit and over-
temperature protection
VS
8
INH
5 GND
Rev. 4729D–AUTO–10/04