BU9728AKV_08 Datasheet, PDF (6/24 Pages) Rohm – For 128-140 Segment type LCD LCD Segment Driver

● DETAIL OF COMMANDS (BU9728AKV)
There is the following thing in the command (The 8×n clock of SCK is C/D= "H".) of BU9728AKV.
◯ ADDRESS SET
MSB
LSB
0 0 0AAAAA
Address data shown as AAAAA by the binary system is set on the address counter.
Address does +2 every time indication data input (for 8bit) completes input.
◯ DISPLAY ON
MSB
LSB
001* * * * *
*:Don't Care
There are no relations with the contents of the display data RAM (DDRAM).
And all display is turned on. In this case, the contents of DDRAM don't change.
◯ DISPLAY OFF
MSB
LSB
010* * * * *
*:Don't Care
There are no relations with the contents of the display data RAM (DDRAM).
In this case, the contents of DDRAM don't change.
◯ DISPLAY START
MSB
LSB
011* * * * *
*:Don't Care
It will be started to oscillate and to display in accordance with the contents of DDRAM.
◯ REWRITING OF THE DISPLAY DATA RAM (DDRAM)
MSB
LSB
1 0 0 * DDDD
*:Don't Care
The binary four bits data DDDD are written in DDRAM.
A writing address is address ordered by the address set command.
Then, after this command is carried out, an address does + 1 automatically.
◯ RESET
MSB
LSB
110* * * * *
*:Don't Care
Please execute this command first after Power on. It will be initialized as follow conditions;
・ Display OFF
・ Address counter reset
6/23