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IK6208 Datasheet(PDF) 7 Page - IK Semicon Co., Ltd |
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IK6208 Datasheet(HTML) 7 Page - IK Semicon Co., Ltd |
7 / 19 page IK6208A 7 April 2012 Ver. 01 KEY MATRIX & KEY INPUT DATA STORAGE RAM Key Matrix consists of 7 x 2 array as shown below: K1 SG1/KS1 SG2/ KS2 SG3/ KS3 SG4/ KS4 SG5/ KS5 SG6/ KS6 SG7/ KS7 K2 Each data entered by each key (or any combination of keys) is stored as follows and read by a READ Command, starting from the last significant bit. When the most significant bit of the data (b0) has been read, the least significant bit of the next data (b7) is read. K1 K2 K1 K2 SG1/KS1 SG2/KS2 x 1’st byte read SG3/KS3 SG4/KS4 x 2’nd byte read SG5/KS5 SG6/KS6 x 3’rd byte read SG7/KS7 x 4’th byte read b0 b1 b2 b3 b4 b5 b6 b7 Key press=”1”, Key no press=”0” read. |
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