发明名称 |
Method and apparatus for performing supervisory functions in digital systems and obtaining diagnostics thereof |
摘要 |
Digital supervisory and diagnostic circuitry to provide a watchdog function and a low voltage detect function and diagnostics for those functions. The watchdog function has a high immunity to EMI and RFI disturbances and may be enabled or disabled as necessary. An indication is provided of the cause of the last reset so that a reset due to EMI can be distinguished from a reset due to a power failure. The low voltage detect circuitry is implementable in an integrated circuit chip. The low voltage detect circuitry eliminates oscillations from the reset signal and provides a delay which is programmable by the user. The circuitry is designed so that the length of the delay can never be zero. |
申请公布号 |
US5528756(A) |
申请公布日期 |
1996.06.18 |
申请号 |
US19950380497 |
申请日期 |
1995.01.30 |
申请人 |
ELSAG INTERNATIONAL N.V. |
发明人 |
MOLNAR, RICHARD J. |
分类号 |
G06F11/00;(IPC1-7):G06F11/34 |
主分类号 |
G06F11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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