| US 7,579,896 B2 | ||
| Method and apparatus for generating multiple analog signals using a single microcontroller output pin | ||
| Robert Allan Faust, Highlands Ranch, Colo. (US); and John Daniel Upton, Georgetown, Tex. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Jun. 02, 2008, as Appl. No. 12/131,534. | ||
| Application 12/131534 is a continuation of application No. 11/191641, filed on Jul. 28, 2005, granted, now 7,477,176. | ||
| Prior Publication US 2008/0258777 A1, Oct. 23, 2008 | ||
| Int. Cl. H03K 17/00 (2006.01); H03M 1/00 (2006.01) | ||
| U.S. Cl. 327—415 [327/185; 327/91; 341/141; 341/146] | 20 Claims |
| 1. A method for generating, using a single microcontroller output pin, a waveform that is used to concurrently generate multiple
separate analog signals, said method comprising:
outputting a waveform from said output pin;
including a plurality of separate digital signals that are serially time multiplexed in said waveform;
outputting trinary signals from said output pin; and
one of said trinary signals being inserted in said waveform to delineate each one of said plurality of digital signals from
others of said plurality of digital signals.
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