Rainbow Electronics ATA6662 - Manual

Features
• Operating Range from 5V to 27V
• Baud Rate up to 20 Kbaud
• Improved Slew Rate Control According to LIN Specification 2.0 and SAEJ2602-2
• Fully Compatible with 3.3V and 5V 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 (35 µs Low Level)
• Control of External Voltage Regulator via INH Pin
• Very Low Standby Current During Sleep Mode (10 µA)
• Wake-up Source Recognition
• Bus Pin Short-circuit Protected versus GND and Battery
• LIN Input Current Typically 5 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
1. Description
The ATA6662 is a fully integrated LIN transceiver complying with the LIN
specification 2.0 and SAEJ2602-2. It interfaces the LIN protocol handler and the phys-
ical 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
bus ensures secure data communication up to 20 Kbaud with an RC oscillator for pro-
tocol handling. Sleep mode guarantees minimal current consumption. The ATA6662
has advanced EMI and ESD performance.
Figure 1-1. Block Diagram
VS
GND 5
6 LIN
7
1
4
RXD
TXD
WAKE
EN
3
2 8
INH
Short circuit and over-
temperature protection
Receiver
Filter
Wake-up bus timer
Slew rate control
TXD
time-out
timer
VS
Wake-up
timer
Standby mode
VS
Control unit
LIN Transceiver
ATA6662
Preliminary
4916E–AUTO–02/07