E52141A62CXX2

The E521.40/41 was developed to manage the connection and communication between a microcontroller unit and up to 24 sensor satellites. Data transmission from the sensor to ECU is done by current modulation on the power supply lines with data rate of 125 Kbit/s or 189 Kbit/s (Manchester coded). Data transmission from ECU to sensor is done by voltage modulation on the power supply. It supports bidirectional communication. Two methods are supported: tooth gap method pulse width method The device is a PSI5 V1.3 and V2.0 compliant receiver which provides four independently operating channels. The channels are able to communicate in low power, standard-, synchronous- and asynchronous operating mode. The communication to μC is done via the SPI or UART interface.

Applications

• Safety (airbag) control systems
• Powertrain control systems
• Vehicle dynamics control system

Key features

• Transceiver compliant with PSI5 standard v1.3 and v2.0
• Provides four independent master channels (up to 6 sensors each)
• Supporting 125 Kbit/s and 189 Kbit/s protocols
• Supporting synchronous and asynchronous operation modes
• Various diagnostic features
• Internal sync - voltage generation
• Programmable bus - voltage 4.6V to 11V
• Automatic threshold adaption to sensor quiescent current
• Reverse polarity protected bus outputs up to 40V
• Enables operation in powertrain and chassis control systems
• Developed according to ISO 26262, based on safety requirements rated up to ASIL C.
• Operating temperature range -40°C to +125°C