ATA6662_09 Datasheet, PDF (1/18 Pages) ATMEL Corporation – LIN Transceiver

Features
• Operating Range from 5V to 27V
• Baud Rate up to 20 Kbaud
• Improved Slew Rate Control According to LIN Specification 2.0, 2.1 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 8 kV at LIN Bus Pin, Supply Pin VS and WAKE Pin According to STM5.1
LIN Transceiver
ATA6662
1. Description
The ATA6662 is a fully integrated LIN transceiver complying with the LIN specification
2.0, 2.1 and SAEJ2602-2. 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 bus ensures
secure data communication up to 20 Kbaud with an RC oscillator for protocol han-
dling. Sleep Mode guarantees minimal current consumption. The ATA6662 has
advanced EMI and ESD performance.
Figure 1-1. Block Diagram
RXD ¹
Receiver
+
Filter
7 VS
6 LIN
TXD 4
VS
WAKE 3
TXD
time-out
timer
Wake-up
timer
Wake-up bus timer
Slew rate control
Control unit
Sleep mode
2
EN
Short-circuit and over-
temperature protection
VS
8
INH
5 GND
4916M–AUTO–09/09