PT6965

V1.3

6

PT6965 KEY MATRIX & KEY INPUT DATA STORAGE RAM

PT6965 Key Matrix consists of 10 x 2 array as shown below:

K1

K2

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

K1…………………K2

SG1/KS1

x

SG2/KS2

x

x

SG3/KS3

x

SG4/KS4

x

x

SG5/KS5

x

SG6/KS6

x

x

SG7/KS7

x

SG8/KS8

x

x

SG9/KS9

x

SG10/KS10

x

x

Reading

Sequence

b0………………….b1

b2

b3………………….b4

b5

b6………………….b7

Note: b2, b5, b6 and b7 do not care.