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PT6547 V1.2

- 11 -

January, 2006

LCD Driver IC with Key Input Function

PT6547

COMMAND 3: ADDRESS SETTING COMMANDS

Address Setting Commands are used to set the address of the display memory. The address is

consider valid if it has a value of “00H” to “25H”. If the address is set to 26H or higher, the data is

ignored until a valid address is set. When power is turned on, the address is set at “00H”. Please refer

to the diagram below.

MSB

LSB

1

1

b5 b4 b3 b2 b1 b0

DISPLAY MODE AND RAM ADDRESS

Data transmitted from an external device to PT6547 via the serial interface are stored in the Display

RAM and are assigned addresses. The RAM Address of PT6547 are given below in 8 bits unit.

1/3 duty

COM1

COM3

COM1

COM3

COM1 COM3

COM1 COM3

SG1

SG21

SG41

SG61

SG2

SG22

SG42

SG62

SG3

SG23

SG43

SG63

SG4

SG24

SG44

SG64

SG5

SG25

SG45

SG65

SG6

SG26

SG46

SG66

SG7

SG27

SG47

SG67

SG8

SG28

SG48

SG68

SG9

SG29

SG49

SG69

SG10

SG30

SG50

SG70

SG11

SG31

SG51

SG71

SG12

SG32

SG52

SG72

SG13

SG33

SG53

SG73

SG14

SG34

SG54

SG74

SG15

SG35

SG55

SG75

SG16

SG36

SG56

SG76

SG17

SG37

SG57

SG18

SG38

SG58

SG19

SG39

SG59

SG20

SG40

SG60

b0

b3

b4

b7

Lower 4bits

Higher 4 bits

b3, b7 are dummy

Address: 00H to 25H