Ver1.0

10

LD1961A

12 SEGMENT X 7 GRID LED Driver with key scan

FUNCTIONAL DESCRIPTION

COMMANDS

The LD1961A has 4 kind of commands. The first command is display setting commands, the second

command is data setting command. The third command is address setting command and the fourth

command is display control command.

COMMAND 1 : DISPLAY MODE SETTING COMMAND

The Display mode setting command has 2bit (b1,b0) for display mode setting and 2bit (b7,b6)

for commands. And 4bits (b5 ~ b2) are don’t care bit. The command bits (b7,b6) are “0”,”0” for

COMMAND1.

The display mode setting command determines the number of segments and grids. This command

should be executed for display off. And the default of b1,b0 are “1”,”1” for power on. This status is

selected 7 grids, 11 segments and key scan enable. If b1,b0 are “1”,”0” then 6 grids 12 segments

and key scan enable selected. If b1,b0 are “0”,”1” or “0”,”0” then 7 grids 11 segments and key scan

disable selected.

Don’t Care

Display Mode Settings :

00 : 7Grid, 11 Segments

01 : 7Grid, 11 Segments

10 : 6 Grids, 12 Segments

11 : 7 Grids, 11 Segments

MSB

b7

LSB

b6

b5

b4

b3

b2

b1

b0

00 : COMMAND 1