Control arrangement for a vehicle seat adjusting mechanism having a self checking, reduced terminal, microcomputer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1987
Grant Date -
N/A
app pub date -
Nov 16, 1984
filing date -
Nov 17, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a circuit arrangement comprising a microcomputer, wherein certain terminals of the microcomputer may be used as either input terminals or as output terminals under selective switching control so that a reasonably priced microcomputer with few terminals can be used to control complex functions such as those of a vehicle seat adjusting mechanism. The circuit arrangement also includes a program check arrangement wherein check pulses are superimposed with control signals at an output terminal. The check pulses are used by a multivibrator which resets the microcomputer when the check pulses are not periodic. The check pulses are short in duration and do not adversely affect the operation of a relay coupled to the output terminal.
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