05175845 is referenced by 121 patents and cites 27 patents.

A system which includes a microprocessor (or microcontroller) and an auxiliary chip which monitors the system power supply voltage and performs related functions for the microprocessor, and also provides a watchdog function to monitor the microprocessor's activity. The auxiliary chip itself can put to sleep by the microprocessor to minimize power consumption. The sleep mode of the auxiliary chip saves power by shutting down many of the input-sensing circuits, and the watchdog function. The sleep command is not accepted unless it stands in the proper timing relationship to a signal on the strobe pin. This permits the power savings of the sleep mode to be realized, without any risk of the system being placed in the sleep mode due to an out-of-control system condition.

Title
Integrated circuit with watchdog timer and sleep control logic which places IC and watchdog timer into sleep mode
Application Number
282793
Publication Number
5175845
Application Date
October 28, 1991
Publication Date
December 29, 1992
Inventor
Wendell L Little
Carrollton
TX, US
Agent
Worsham Forsythe Sampels & Wooldridge
Assignee
Dallas Semiconductor
TX, US
IPC
G06F 7/02
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