大多数基于微处理器的系统，以确保正确的操作，需要在上电和掉电的监督，并在进入或退出关机或休眠模式。主管可能只提供了一个上电复位，或它可以提供额外的功能，如备份电池管理，存储器写保护，低线的预警，或软件看门狗（图1） 。Maxim > App Notes > Automotive Microprocessor Supervisor Circuits Keywords: microprocessor supervisor, battery backup, false reset, power on reset, power good circuit, reset circuit, early warning, sleep mode, uP supervisor, Mar 13, 2000 microprocessor, supervisory, supervisor ICs APPLICATION NOTE 655 Supervisor ICs Monitor Battery-Powered Equipment To ensure correct operation, most microprocessor-based systems require supervision during power-up and power-down, and when entering or exiting shutdown or sleep mode. The supervisor may only provide a power-on reset, or it may offer additional functions, such as backup-battery management, memory-write protection, low-line early warning, or a software watchdog (Figure 1). Figure 1. A feature-laden P supervisor (IC1), with the h……