NT7605 데이터 시트보기 (PDF) - Novatek Microelectronics

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NT7605

Single-chip 20C X 2L Dot-Matrix LCD Controller / Driver

Novatek Microelectronics 

NT7605

Instruction Set

Instruction

Display Clear

Display/

Cursor Home

Entry Mode

Set

Display

ON/OFF

Display/

Cursor Shift

Function Set

RAM Address

Set

DD RAM

Address Set

Busy Flag/

Address

Counter

Read

CG RAM/

DD RAM

Data Write

CG RAM/

DD RAM

Data Read

Code

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1

00

0

0

0

0

0

0

0

00

0

0

0

0

0

0

1

00

0

0

0

0

0

1 I/D

00

0

0

0

0

1

D

C

00

0

0

0

1 S/C R/L *

00

0

0

1 DL N

F

*

00

0

1

ACG

00

1

ADD

0 1 BF

AC

10

11

I/D = 1 : Increment

S = 1 : Display Shift On

D = 1 : Display On

C = 1 : Cursor Display On

B = 1 : Cursor Blink On

S/C = 1 : Shift Display

R/L = 1 : Shift Right

DL = 1 : 8-Bit

N = 1 : Dual Line

F = 1 : 5x10 dots

BF = 1 : Internal Operation

BF = 0 : Ready for Instruction

Write data

Read data

I/D = 0 : Decrement

S/C = 0 : Move Cursor

R/L = 0 : Shift Left

DL = 0 : 4-Bit

N = 0 : Signal Line

F = 0 : 5x8 dots

DB0

1

*

S

B

*

*

Function

Clear entire display area,

Restore display from shift, and

load address counter with DD

RAM address 00H

Restore display from shift and

load address counter with DD

RAM address 00H

Specify direction of cursor

movement and display shift

mode. This operation takes

place after each data transfer

(read/write)

Specify activation of display (D)

cursor (C) and blinking of

character at cursor position (B)

Shift display or move cursor

Set interface data length (DL),

number of the display line (N),

and character font (F)

Load the address counter with

a CG RAM address

Subsequent data access is for

CG RAM data

Load the address counter with

a DD RAM address

Subsequent data access is for

DD RAM data

Read Busy Flag (BF) and

contents of Address Counter

(AC)

Write data to CG RAM or DD

RAM

Read data from CG RAM or DD

RAM

DD RAM : Display Data RAM

CG RAM : Character Generator

RAM

ACG : Character Generator

RAM Address

ADD : Display Data RAM

Address

AC :

Address Counter

Execution

time (max)

(fOSC =

540KHz)

1.64ms

1.64ms

40µs

40µs

40µs

40µs

40µs

40µs

1µs

40µs

40µs

Note 1: Symbol " * " signifies an insignificant bit (disregard).

Note 2: Correct input value for "N" is predetermined for each model.

Note 3: The variation of execution time depends on the change of oscillator frequency; for example:

if fOSC = 380KHz, then execution time = 40µs× (540KHz / 380KHz) = 57µs

14

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