ST7066U View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

ST7066U

Dot Matrix LCD Controller/Driver

Unspecified 

ST7066U

n Instruction Description

l Clear Display

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 0 1

Clear all the display data by writing "20H" (space code) to all DDRAM address, and set DDRAM address to

"00H" into AC (address counter). Return cursor to the original status, namely, bring the cursor to the left edge

on first line of the display. Make entry mode increment (I/D = "1").

l Return Home

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 1 x

Return Home is cursor return home instruction. Set DDRAM address to "00H" into the address counter.

Return cursor to its original site and return display to its original status, if shifted. Contents of DDRAM does

not change.

l Entry Mode Set

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 1 I/D S

Set the moving direction of cursor and display.

Ø I/D : Increment / decrement of DDRAM address (cursor or blink)

When I/D = "High", cursor/blink moves to right and DDRAM address is increased by 1.

When I/D = "Low", cursor/blink moves to left and DDRAM address is decreased by 1.

* CGRAM operates the same as DDRAM, when read from or write to CGRAM.

Ø S: Shift of entire display

When DDRAM read (CGRAM read/write) operation or S = "Low", shift of entire display is not performed. If

S = "High" and DDRAM write operation, shift of entire display is performed according to I/D value (I/D =

"1" : shift left, I/D = "0" : shift right).

S

I/D

Description

H

H Shift the display to the left

H

L Shift the display to the right

V2.2

18/42

2006/05/11

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