UJA1023T/2R04/C;51

Controllers Overview

The UJA1023T/2R04/C;51 is a stand-alone LIN I/O slave featuring an integrated LIN 2.0 controller and transceiver compliant with SAE J2602. It includes a 30 kΩ termination resistor, eight configurable bidirectional I/O ports, and an on-chip oscillator for automatic bit rate synchronization between 1 kbit/s and 20 kbit/s. The device supports Node Address assignment via daisy chain or plug coding. Electrical specifications include a BAT supply voltage range of 5.5 V to 27 V, a virtual junction temperature limit of −40 °C to +150 °C, and ESD robustness of ±8 kV (human body model).

Controllers Feature Summary

• Autonomous LIN protocol handling with automatic bit rate detection.
• Configurable I/O pins supporting high-side/low-side drivers, PWM, cyclic sense, and switch matrix functions.
• Advanced low-power behavior including user-programmable limp home states during bus faults.

Controllers Applications

• Electronic control units requiring input/output handling.
• Automotive sub-networks utilizing LIN protocols.
• Applications necessitating local wake-up and edge capturing capabilities.

Controllers Procurement Notes

Verify the ordering suffix /C;51 against official NXP documentation to confirm specific tape-and-reel packaging details and variant distinctions from the standard UJA1023T/2R04. Ensure compatibility with system requirements regarding the extended ambient temperature range and voltage limits before procurement.

Controllers Selection Notes

Select this component for designs requiring a standalone LIN slave with integrated I/O management. Confirm that the 5.5 V minimum BAT voltage meets system power constraints. Verify that the SO16 package dimensions align with PCB layout requirements and that the 30 kΩ internal termination is sufficient for the network topology.

Controllers Part Context

This part belongs to the UJA1023 family of LIN-I/O slaves manufactured by NXP Semiconductors. It serves as a replacement for basic components in electronic control units, consolidating LIN communication and I/O expansion into a single chip. The T/2R04 designation indicates the specific reel quantity and package type within the product line.

Controllers Replacement Considerations

The UJA1023T/2R04 is pin-to-pin compatible with other variants in the UJA1023 series. Verify if the /C;51 suffix introduces any functional differences compared to the base UJA1023T/2R04 model before substitution.

Controllers FAQ

How is the Node Address assigned?

Node Address assignment is performed via a master request frame using either a daisy chain method or plug coding based on the logic levels of configuration pins C1, C2, and C3.

What happens during a LIN bus fault?

In case of failures such as a short to ground, the device enters a low-power Limp home mode where outputs switch to a user-programmable state to maintain minimal functionality.

Can the I/O pins be used for analog inputs?

Yes, each of the eight bidirectional I/O pins can function as an analog input for the integrated 8-bit ADC when configured appropriately via LIN messages.