TJA1082TT,112 NXP

TJA1082 FlexRay node transceiver Rev. 6 28 November 2012 Product data sheet 1. General description The TJA1082 FlexRay node transceiver is compliant with the FlexRay electrical physical layer specification V2.1 Rev. B (see Ref. 1). In addition, it incorporates features and parameters included in V3.0.1 (see Ref. 2 and Section 14). It is primarily intended for communication systems operating at between 2.5 Mbit/s and 10 Mbit/s, and provides an advanced interface between the protocol controller and the physical bus in a FlexRay network. The TJA1082 offers an optimized solution for Electronic Control Unit (ECU) applications that do not need enhanced power management and are typically switched by the ignition or activated by a dedicated wake-up line. The TJA1082 provides a differential transmit capability to the network and a differential receive capability to the FlexRay controller. It offers excellent ElectroMagnetic Compatibility (EMC) performance as well as high ElectroStatic Discharge (ESD) protection. The TJA1082 actively monitors system performance using dedicated error and status information (readable by any microcontroller), as well as internal voltage and temperature monitoring. 2. Features and benefits 2.1 Optimized for time triggered communication systems Compliant with Electrical Physical Layer specification 2.1 Rev. B Automotive product qualification in accordance with AEC-Q100 (Grade 1) Data transfer at 2.5 Mbit/s, 5 Mbit/s and 10 Mbit/s Supports 60 ns minimum bit time at 400 mV differential voltage Very low ElectroMagnetic Emission (EME) to support unshielded cable Differential receiver with high common-mode range for excellent ElectroMagnetic Immunity (EMI) Auto I/O level adaptation to host controller supply voltage V IO Can be used in 14 V and 42 V powered systems Instant shut-down interface (via BGE pin) 2.2 Low power management Very low current consumption in Standby mode Remote wake-up via a wake-up pattern or dedicated FlexRay data frames on the bus linesTJA1082 NXP Semiconductors FlexRay node transceiver 2.3 Diagnosis and robustness Enhanced supply voltage monitoring for V and V CC IO Two error diagnosis modes: Status register readout via the Serial Peripheral Interface (SPI) Simple error indication via pin ERRN Overtemperature detection Short-circuit detection on bus lines Power-on flag Clamping diagnosis for pins TXEN and BGE Bus pins protected against 8 kV ESD pulses (according to IEC61000-4-2 and HBM) Bus pins protected against transients in automotive environment (according to ISO 7637 class C) Bus pins short-circuit proof to battery voltage (14 V and 42 V) and ground Maximum differential voltage between pins BP or BM and any other pin of 60 V Bus lines remain passive when the transceiver is not powered No reverse currents from the digital input pins to V or V when the transceiver is not IO CC powered 2.4 FlexRay conformance classes Bus driver - bus guardian interface Bus driver logic level adaptation 3. Ordering information Table 1. Ordering information Type number Package Name Description Version TJA1082TT TSSOP14 plastic thin shrink small outline package 14 leads body width 4.4 mm SOT402-1 TJA1082 All information provided in this document is subject to legal disclaimers. NXP B.V. 2012. All rights reserved. Product data sheet Rev. 6 28 November 2012 2 of 38