ST7565V Sitronix Technology, ST7565V Datasheet - Page 50
ST7565V
Manufacturer Part Number
ST7565V
Description
65 x 132 Dot Matrix LCD Controller/Driver
Manufacturer
Sitronix Technology
Datasheet
1.ST7565V.pdf
(72 pages)
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ST7565V
The Booster Ratio (Double Byte Command)
This command makes it possible to select step-up ratio. It is used when the power control set have turn on the internal booster
circuit. This command is a two byte command used as a pair with the booster ratio select mode set command and the booster
ratio register set command, and both commands must be issued one after the other.
Booster Ratio Select Mode Set
When this command is input, the Booster ratio register set command becomes enabled. Once the booster ratio select mode
has been set, no other command except for the booster ratio register command can be used. Once the booster ratio register
set command has been used to set data into the register, then the booster ratio select mode is released.
Booset Ratio Register Set
By using this command to set two bits of data to the booster ratio register,it can be select what kind of the booster ratio can be
used.
When this command is input, the booster ratio select mode is released after the booster ratio register has been set.
* Inactive bit (set “0”)
When the booster ratio select function is not used, set this to (0, 0) 2x,3x,4x step-up mode
The booster ratio Register Set Sequence
Ver 1.5b
A0
0
A0
0
/RD /WR
/RD /WR
E
E
1
1
R/W
R/W
0
0
D7 D6 D5 D4 D3 D2 D1 D0
1
D7 D6 D5 D4 D3 D2 D1 D0
*
*
*
1
*
*
*
1
*
*
*
1
*
*
*
1
*
*
*
0
*
*
*
0
0
1
0
0
0
1
1
Figure 29
50/72
Booster
select
2x,3x,4x
ratio
5x
6x
2009/09/14
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