DUAL FUNCTION PIN FOR ANALOG INTEGRATED CIRCUITS
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2002-Jan-23
The purpose of this invention is to include an extra control IC. The part of the IC using this function is function on an integrated circuit where all pins have been depicted on Figure 1. used. It has been developed for a washing machine motor r ---a-------------- l Analog Qf=!$&j Digital signa, i STALL ROTOR ALARM MONlTORlNG l-l I UNIVERSAL MOTOR CONTROL IC - BLOCK DIAGRAM Figure 1 The basic idea consists in cumulating two diierent logic level: zero for the 2 to 7 volt range and one for the informations on the same pin: an analog voltage and a 8 to I3 volt range (considering that Vcc = 1 5V see digital signal. Figure 3).