ST7577 datasheet(28/48 Pages) SITRONIX

28 / 48 page

ST7577

Ver 1.0a

28/48

2008/02/14

H=1

When Function Set instruction sets H=1, the selected instruction descriptions are as below.

Partial Mode

This instruction configures the Partial Display mode. Please note that the actual duty is not changed.

R/W(/WR)

DA1

DA0

Flag

Description

DA[1:0]

Use DA[1:0] to select the display area. The duty is not changed among all these modes.

DA1

DA0

Partial Display Mode

Full Display (Partial Display Mode OFF).

Upper Mode (COM0~COM25)

Middle Mode (COM7~COM32)

Lower Mode (COM13~COM38)

Booster Control

This instruction configures the built-in voltage booster.

R/W(/WR)

PC1

PC0

Flag

Description

ST7577 supports software configurable Booster Efficiency. Customers can change the BE and PC[1:0]

according to the LCD panel loading and their power consumption requirement. The higher level provides

higher driving ability while the power consumption is also higher.

Booster Efficiency Level

Booster Efficiency Level 2 (Default)

Booster Efficiency Level 1

PC[1:0]

ST7577 supports software selectable Booster Stage. Customers can change the BE[1:0] and PC[1:0]

according to the LCD panel loading and their power consumption requirement. The higher stage generates

higher driving ability while the power consumption is also higher.

PC1

PC0

Booster Stage

Booster X3

Booster X4

ST7577 Datasheet(PDF) 28 Page - Sitronix Technology Co., Ltd.

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