PT6313-S Datasheet, PDF (8/20 Pages) Princeton Technology Corp – VFD Driver/Controller IC

VFD Driver/Controller IC
PT6313-S Key Matrix & Key Input Data Storage RAM
PT6313-S Key Matrix consists of 8 x 2 array as shown below:
K1
K2
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PT6313-S
Each data inputted by each key are stored as follows. They are read by a READ Command, starting
from the last significant bit. When the most significant bit of the data (SG8, b7) has been read, the least
significant bit of the next data (SG1, b0) is read.
K1…………K1
SG1/KS1
SG5/KS5
b0………….b1
K2…………K3
SG2/KS2
SG6/KS6
b2………….b3
K4…………K5
SG3/KS3
SG7/KS7
b4………….b5
K6……………K7
SG4/KS4
SG8/KS8
b6…………….b7
Reading
Sequence
PT6313-S V1.2
-8-
September, 2005