E521.41 Datasheet, PDF (1/89 Pages) ELMOS Semiconductor AG – Transceiver compliant with PSI5 standard v1.3 and v2.1

4 Channel Multi-Mode PSI5 Transceiver
PRODUCTION DATA – Apr 27, 2016
E521.41
Features
• Transceiver compliant with PSI5 standard v1.3 and
v2.1
• Provides four independent master channels (up to 6
sensors each)
• Supporting 125 Kbit/s and 189 Kbit/s protocols
• Supporting synchronous and asynchronous opera-
tion modes
• Various diagnostic features
• Internal sync-voltage generation
• Programmable PSI5 channel-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
General Description
The E521.41 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 bid-
irectional communication. Two methods are supported:
• tooth gap method
• pulse width method
The device is a PSI5 V1.3 and V2.1 compliant trans-
ceiver 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
Ordering Information
Ordering-No.:
E52141A62CXX2
E52141A55E
Features
4-channel
4-channel
Package
QFN20L5
SOIC20
Typical Application Circuit
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
1 / 89
QM-No.: 25DS0109E.06