PT6965 Datasheet, PDF (6/20 Pages) Princeton Technology Corp – LED Driver IC

PT6965 KEY MATRIX & KEY INPUT DATA STORAGE RAM
PT6965 Key Matrix consists of 10 x 2 array as shown below:
K1
K2
PT6965
Each data entered by each key 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
SG1/KS1
SG3/KS3
SG5/KS5
SG7/KS7
SG9/KS9
b0………………….b1
K1…………………K2
x
SG2/KS2
x
SG4/KS4
x
SG6/KS6
x
SG8/KS8
x
SG10/KS10
b2 b3………………….b4
x
x
x
x
x
x
x
x
x
x
b5 b6………………….b7
Reading
Sequence
Note: b2, b5, b6 and b7 do not care.
V1.3
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