PT6324

V1.5

June 2010

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COMMAND 2: DATA SETTING COMMANDS

The Data Setting Commands executes the Data Write or Data Read Modes for PT6324. The data Setting Command, the

bits 5 and 6 (b4, b5) are given the value of “0”, bit 7 (b6) is given the value of “1” while bit 8 (b7) is given the value of “0”.

Please refer to the diagram below.

When power is turned ON, bit 4 to bit 1 (b3 to b0) are given the value of “0”.

MSB

LSB

0

1

0

0

b3

b2

b1

b0

Data write & read mode settings:

00: Write data to display mode

01: Reset function (one time reset)

10: Read key data

11: Not relevant

Address increment mode settings (Display mode):

0: Increment address after data has been written

1: Fixed address

Mode settings:

0: Normal operation mode

1: Test mode

PT6324 KEY MATRIX & KEY INPUT DATA STORAGE RAM

PT6324 Key Matrix consists of 16 x 2 array as shown below:

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 (SG16, b7) has been read, the least significant bit of the next data

(SG1, b0) is read.

K1……………….K2

K1………………..K2

K1……………….K2

K1……………….K2

Reading

Sequence

SG1/KS1

SG2/KS2

SG3/KS3

SG4/KS4

SG5/KS5

SG6/KS6

SG7/KS7

SG8/KS8

SG9/KS9

SG10/KS10

SG11/KS11

SG12/KS12

SG13/KS13

SG14/KS14

SG15/KS15

SG16/KS16

b0………………..b

1

b2…………………b

3

b4………………..b

5

b6………………..b

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