Watchdog timer
专利汇可以提供Watchdog timer专利检索，专利查询，专利分析的服务。并且PURPOSE: To monitor a system accurately, by presetting a time required for the next processing to a watchdog timer, which monitors the operation of a microcomputer, when it is the preset time.
CONSTITUTION: When the number of pulses P
1 WP
4 corresponding to the time to the next presetting is written in a register by a preset instruction, a write signal WT is inputted to a reset R
2 pf a flip flop F
2 and therefore, a counter and a terminal Q
2 of the flip flop F
2 become 0. A start instruction is executed, and an abnormality detection signal 10 is outputted if a preset instruction 9 is executed before the preset time, and an abnormality detection signal 12 is outputted even if a next preset instruction 11 is executed behind the preset time. If the next preset instruction is executed within a preset time 13, no abnormality detection signals are outputted. In a case 16 where the next preset instruction is not executed within a preset time 13', an abnormality detection signal 17 is outputted.
COPYRIGHT: (C)1984,JPO&Japio，下面是Watchdog timer专利的具体信息内容。
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