3. LIN System-basis-chip Block
3.1 Features
• Master and Slave Operation Possible
• Supply Voltage up to 40V
• Operating voltage VS = 5V to 27V
• Typically 10µA Supply Current During Sleep Mode
• Typically 57µA Supply Current in Silent Mode
• Linear Low-drop Voltage Regulator, 85mA Current Capability:
– Normal, Fail-safe, and Silent Mode
• VCC = 5.0V ±2%
– In Sleep Mode VCC is Switched Off
• VCC Undervoltage Detection (4ms Reset Time) and Watchdog Reset Logical Combined at Open
Drain Output NRES
• Negative Trigger Input for Watchdog
• Boosting the Voltage Regulator Possible with an External NPN Transistor
• LIN Physical Layer According to LIN 2.0, 2.1 Specification and SAEJ2602-2
• Wake-up Capability via LIN-bus, Wake Pin, or Kl_15 Pin
• INH Output to Control an External Voltage Regulator or to Switch off the Master Pull-up
Resistor
• TXD Time-out Timer
• Bus Pin is Overtemperature and Short-circuit Protected versus GND and Battery
• Adjustable Watchdog Time via External Resistor
• Advanced EMC and ESD Performance
• Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.0”
• Interference and Damage Protection According ISO7637
3.2 Description
The LIN-SBC is a fully integrated LIN transceiver, which complies with the LIN 2.0, 2.1 and
SAEJ2602-2 specifications. It has a low-drop voltage regulator with a 5V/85mA output and a
window watchdog. The voltage regulator is able to source up to 85mA, but if necessary the
output can be boosted by an external NPN transistor.
The LIN-SBC is designed to handle the low-speed data communication in vehicles, e.g., in
convenience electronics. Improved slope control at the LIN-driver ensures secure data com-
munication up to 20kBaud. Sleep Mode and Silent Mode guarantee very low current
consumption.
4 Atmel ATA6616/ATA6617
9132F–AUTO–02/12