uja1061 NXP Semiconductors, uja1061 Datasheet - Page 7

• Manufacturer Part Number: uja1061
• Description: Low Speed Can/lin System Basis Chip
• Manufacturer: NXP Semiconductors

NXP Semiconductors
6. Functional description
UJA1061_5
Product data sheet
6.1 Introduction
6.2 Fail-safe system controller
The UJA1061 combines all peripheral functions around a microcontroller within typical
automotive networking applications into one dedicated chip. The functions are as follows:
The fail-safe system controller is the core of the UJA1061 and is supervised by a
watchdog timer which is clocked directly by the dedicated on-chip oscillator. The system
controller manages the register configuration and controls all internal functions of the
SBC. Detailed device status information is collected and presented to the microcontroller.
The system controller also provides the reset and interrupt signals.
The fail-safe system controller is a state machine. The different operating modes and the
transitions between these modes are illustrated in
further details about the SBC operating modes.
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Power supply for the microcontroller
Power supply for the CAN transceiver
Switched BAT42 output
System reset
Watchdog with Window mode and Time-out mode
On-chip oscillator
Fault-tolerant CAN and LIN transceivers for serial communication; suitable for 12 V
and 42 V applications
SPI control interface
Local wake-up input
Inhibit or limp home output
System inhibit output port
Compatibility with 42 V power supply systems
Fail-safe behavior
Rev. 05 — 22 November 2007
Fault-tolerant CAN/LIN fail-safe system basis chip
Figure
3. The following sections give
© NXP B.V. 2007 Nov 23. All rights reserved.
UJA1061
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