The MB91F467B contains six C-CAN controllers and seven LIN-UARTs backed up by 40kbytes data-RAM and 1088kbytes of Flash memory with read-out protection. A 100MHz PLL clock circuit minimises power consumption by dynamically switching off unused clock trees. Further power-saving features include an integrated 32kHz sub-clock oscillator in conjunction with standby modes such as “stop” and “sleep”. Security and safety applications are supported by the internal-clock supervisory circuit, which automatically switches to an internal RC oscillator as back-up in the event of a major clock failure. Flexible timer architectures and the capability to generate and capture high-precision signals are basic requirements for automotive systems.