UPD78946x

AI 生成的摘要: The document details the usage of LIN and UART controllers, covering device and IP-level mapping, base addresses, memory vectors, and device adaptation. It includes application examples such as serial and graphics monitor programs, LIN communication tables, and application layer functions. The FAQ section addresses interrupt handling, status information, data reception after errors, self-test failures, and LIN conformance with specification 2.2A. It also provides terminology and issue-solving indexes for quick reference.

AI 生成的摘要: The document details the Renesas CAN Controller's usage, including compatibility, evaluation results, and principles of pretended networking. It covers sample software descriptions, CAN driver functionalities such as initialization, configuration, transmission, reception, and diagnostics. The text also explains mapping of lower CAN drivers, application examples, and frequently asked questions addressing CAN conformance, transceiver issues, bit timing, operation modes, power save modes, transmission, reception, message storage, peripheral bus access, and interrupt handling.

AI 生成的摘要: The content explains the merger of NEC Electronics Corporation and Renesas Technology Corporation into Renesas Electronics Corporation, clarifying that older documents bearing the old company name remain valid. It outlines important notices regarding product information accuracy, intellectual property rights, usage restrictions, export controls, and liability disclaimers. The document classifies Renesas products into three quality grades—Standard, High Quality, and Specific—each suited for different applications, emphasizing the need for compliance with specified operating ranges and safety measures. It also highlights the importance of environmental compliance and prohibits unauthorized reproduction of the document.

AI 生成的摘要: The document explains how to optimize power consumption in battery-powered embedded microcontroller applications by using dual-clock architecture. It details the use of a high-speed main clock and a low-speed 32.768-kHz subsystem clock, each with specific standby modes to reduce power usage. The CPU can switch between these clocks in real time to balance performance and power efficiency. The document also describes methods for updating the time of day using either the main clock or the subsystem clock, highlighting the lower current consumption of the subsystem clock operation. It covers the implementation of halt, stop, subclock operation, and subclock halt modes to minimize power while maintaining essential functions like the real-time clock.