TLE8263EXUMA1

Overview

The TLE8263EXUMA1 is an automotive System Basis Chip (SBC) from Infineon's HERMES family, designed for body controller and gateway applications. It integrates a high-speed CAN transceiver compliant with ISO 11898-2/5 and SAE J2284, supporting data rates up to 1 MBaud. The device includes two LIN transceivers conforming to LIN 2.1 and ISO 9141 standards, operating at up to 20 kBaud. Power management features include three low-dropout voltage regulators: Vcc1µC (5V, 200mA), Vcc2 (5V, 200mA), and Vcc3 (configurable up to 400mA). Supervision functions comprise a configurable watchdog timer, undervoltage reset, and Limp Home output. Communication with the host microcontroller is handled via a standard 16-bit SPI interface.

Feature Summary

• Integrated HS-CAN transceiver with bus wake-up capability and short-circuit protection to ground and battery.
• Dual LIN transceivers supporting LIN 2.1, LIN Flash Mode (115 kBaud), and ISO 9141 compatibility.
• Three internal LDOs: Vcc1µC (5V/200mA), Vcc2 (5V/200mA), and Vcc3 (up to 400mA with external PNP).
• Comprehensive supervision including window/time-out watchdog, undervoltage reset, and Limp Home fail-safe output.

Applications

• Automotive body controllers
• Gateway applications in vehicle networks
• Systems requiring integrated power management and dual LIN/CAN interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix EXUMA1 matches the required tape and reel packaging format. Ensure the source provides valid traceability documentation for automotive-grade qualification requirements.

Selection Notes

Select this model when two independent LIN channels are required alongside a high-speed CAN interface. Verify that the external PNP transistor configuration is suitable if utilizing the Vcc3 regulator for currents exceeding 200 mA. Ensure the host microcontroller supports the 16-bit SPI protocol for proper state machine control and diagnostic monitoring.

Part Context

This component belongs to the TLE8263E HERMES scalable SBC family. It shares identical software functionality and hardware architecture with variants like the TLE8264E, differing primarily in the number of integrated LIN cells. The TLE8263E specifically provides two LIN transceivers, whereas other family members may offer one or three.

Replacement Considerations

For pin-compatible alternatives within the same family, consider the TLE8264E (three LIN channels) or TLE8262E (one LIN channel). Verify that the replacement part maintains the PG-DSO-36-38 package and meets the same automotive qualification standards.

FAQ

What is the maximum data rate for the LIN transceivers?

The LIN transceivers support transmission rates up to 20 kBaud under normal operation. In LIN Flash Mode, the rate can reach 115 kBaud.

How is the Vcc3 voltage regulator configured?

Vcc3 provides a 5V output with ±4% tolerance. Its current limit is determined by an external shunt resistor; it can supply up to 400 mA when used with a 220 mΩ shunt resistor and an external PNP transistor.

What happens if the Watchdog timer fails in Normal Mode?

Depending on the selected configuration (Config 1-4), a watchdog failure will either trigger the Limp Home output and enter Restart Mode or activate Fail-Safe Mode by turning off Vcc1µC.