ST7565P datasheet(49/71 Pages) SITRONIX

49 / 71 page

ST7565P

Ver 2.1b

49/71

2009/09/14

Sleep Mode

This stops all operations in the LCD display system, and as long as there are no accesses from the MPU, the consumption

current is reduced to a value near the static current. The internal modes during sleep mode are as follows:

1. The oscillator circuit and the LCD power supply circuit are halted.

2. All liquid crystal drive circuits are halted, and the segment in common drive outputs output a VSS level.

3. The static drive system does not operate.

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.

R/W

/RD /WR

D7 D6 D5 D4 D3 D2 D1 D0

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.

R/W

/RD /WR

D7 D6 D5 D4 D3 D2 D1 D0

Booster

ratio

select

2x,3x,4x

* Inactive bit (set “0”)

When the booster ratio select function is not used, set this to (0, 0) 2x,3x,4x step-up mode.

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