KCU GEN2 Micro: Lite Vehicle Control Unit Specifications

Summary

KCU GEN2 Micro is a streamlined version of the KopherBit second generation automotive control unit.Using Infineon TC387QP (quad-core 300 MHz), providing 10 MB Flash / 1.5 MB RAM, 4 channels of full CAN FD communication, 4 analog inputs, 4 digital inputs, 2 frequency inputs, the output end has 4 PWM low drivers and 1 H-bridge or 2 PWM high drivers, PCB size 70×86×33 mm, suitable for subsystem ECU applications where space is limited but still requires the high bandwidth of CAN FD.

Technical Role

KCU GEN2 Micro is a compact hardware option under the KCU GEN2 series.When the application requires a lower number of I/Os but still requires: CAN FD 4-way, AUTOSAR Classic software ecology, UDS programming, XCP calibration, and wide voltage input, KCU GEN2 Micro can be used as a node ECU, a smart subsystem controller, or a satellite controller distributed downward from the KCU GEN2 master.

Compared with KCU GEN2 (Phase B): the CPU and software are fully compatible, and the Flash/RAM size is the same. The difference mainly lies in the number of external interfaces and the size of the mechanism.

Architecture

Mods	Characters
Main MCU	Infineon TC387QP, 4×300 MHz multi-core Lock-Step architecture, executes application layer SWC, AUTOSAR RTE and security partitioning.
Power Domain	9–36 V wide voltage input, provides 2 sets of 5 V sensor power (50 mA/set).
Analog Inputs	4 channels, connected to vehicle analog sensors.
Digital Inputs	4 channels (MSDI multiplexed digital inputs).
Frequency Inputs	2 channels, measuring frequency/pulse width signals (such as rotation speed, flow meter).
Low-Side Drivers	4 channels, all support PWM.
High-Side Drivers / H-bridge	1 H-bridge or 2 PWM high-side drivers.
CAN	4-channel CAN 2.0B / CAN FD, maximum baud rate 2 Mbit/s; CAN A has wake-up capability.
Connector	Molex 477320361 36-pin.

Key Capabilities

• 4-core 300 MHz Infineon TC387QP with hardware Lock-Step and HSM security features (Functional Safety and Security Basics).
• Full 4-channel CAN FD (up to 2.0 Mbit/s), CAN A has a wake-up function to wake up the ECU from standby.
• Wide voltage 9–36 V, 2 sets of 5 V 50 mA sensor power outputs.
• Compact PCB 70×86×33 mm for easy integration into space-constrained bodies, subsystems or external modules.
• Share BSW, configuration tools, Bootloader, and diagnostic processes with KCU GEN2 to reduce cross-product line development costs.
• UDS Bootloader and XCP calibration support, compatible with KopherBoot and standard measurement tool chain.

Engineering Inputs Required

Client provides input	Purpose
Signal matrix (DBC / ARXML)	Configure 4-channel CAN/CAN FD communication matrix and PDU.
I/O mapping table	Map AI / DI / FI / LSD / HSD / H-bridge channels to actual sensors and actuators.
Wake-up event definition	Specify the PDU or NM signal corresponding to CAN A wake-up.
Security Partitioning and Monitoring Strategies	Configure TC387QP Lock-Step core and HSM usage.
Bootloader process requirements	UDS Security Access, Flash memory partition planning.

How KopherBit Supports This

• Hardware: KCU GEN2 Micro mass production level hardware, which can be customized according to the customer’s BOM.
• AUTOSAR BSW: KopherSAR Classic provides 4×CAN FD, LIN (if available), UDS, DEM, DCM, NM, COM, PduR, RTE and other modules.
• Configuration: KopherConfig performs SWC and BSW configuration; Kopher Network Designer handles the communication matrix.
• Bootloader: KopherBoot UDS-based Bootloader.
• Diagnostics: KopherUDS provides ECU-side diagnostic services, with KITE UDS Tester / Reflasher handling external validation and programming workflows.

FAQ

KCU GEN2 Micro and KCU GEN2 (Phase B) Main differences?

The sizes of CPU, Flash and RAM are the same (TC387QP / 10 MB Flash / 1.5 MB RAM).The difference is in the number of I/Os: GEN2 Micro is 4 AI / 4 DI / 2 FI / 4 LSD / 1 H-bridge or 2 HSD, which is much less than GEN2 (Phase B)’s 20 AI / 22 DI / 4 FI / 28 LSD / 6 HSD; the connector is 36-pin Molex instead of 112-pin Molex.Micro is suitable for node/distributed ECUs; Phase B is suitable for central VCUs.

Do all 4 CAN channels support CAN FD?

yes.All 4 channels support CAN 2.0B and CAN FD (up to 2.0 Mbit/s).CAN A additionally has wake-up capabilities.

KCU Does the GEN2 Micro support Ethernet?

no.Ethernet is only available in KCU GEN2 (Phase B) major version.Micro is limited to CAN/CAN FD communication.

Can H-bridge and high-level driver exist at the same time?

no.The output terminal can be configured as “1 H-bridge” or “2 PWM high-level drivers”, which will be confirmed in the design stage.

KCU Is the GEN2 Micro compliant with automotive regulations?

Operating temperature -40 ℃ ~ +85 ℃; protection level IP6K5; compliant with ISO 16750, ISO 7637, CISPR 25 (the specifications page is marked TBD, and the official mass production specifications are subject to the Release version).