NJU6631ACH 데이터 시트보기 (PDF) - Japan Radio Corporation

부품명

상세내역

제조사

NJU6631ACH

16-CHARACTER 1-LINE DOT MATRIX LCD CONTROLLER DRIVER

Japan Radio Corporation  

NJU6631A

(3-1) Description of each instructions

(a) Maker Test

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 0 0

All "0" code in 4-bit length is using for device testing mode (only for maker).

Therefore, please avoid all "0" input or no meaning Enable signal input at data "0".

(Especially please pay attention the output condition of Enable signal when the power turns on.)

All "0" code in 8-bit length is usable for NOP (Not Operating instruction).

(b) Clear Display

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 0 1

Clear display instruction is executed when the code "1" is written into DB0. When this instruction is executed,

the space code (20)H is written into every DD RAM address, the DD RAM address 0 is set into the address

counter and entry mode is set increment. If the cursor or blink are displayed, they are returned to the left end

of the LCD.

The S of entry mode does not change.

Note: The character pattern for character code (20)H must be blank code in the user-defined character

pattern(Custom font).

(c) Return Home

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 1 * * = Don’t Care

Return home instruction is executed when the code "1" is written into DB1. When this instruction is executed,

the DD RAM address 0 is set into the address counter. Display is returned its original position if shifted, the

cursor or blink are returned to the left end of the LCD, if the cursor or blink are on the display.

The DD RAM contents do not change.

(d) Entry Mode Set

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

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

Entry mode set instruction which sets the cursor moving direction and display shift On/Off, is executed when

the code "1" is written into DB2 and the codes of (I/D) and (S) are written into DB1(I/D) and DB0(S), as shown

below.

(I/D) sets the address increment or decrement, and the (S) sets the entire display shift in the DD RAM

writing.

I/D

Function

1

Address increment : The address of the DD or CG RAM increment (+1) when the

read/write, and the cursor or blink move to the right.

0

Address decrement : The address of the DD or CG RAM decrement (-1) when the

read/write, and the cursor or blink move to the left.

S

Function

Entire display shift.

The shift direction is determined by I/D : shift to the left at I/D=1 and shift to the right

1

at the I/D=0. The shift is operated only for the character, so that it looks as if the

cursor stands still and the display moves.

The display does not shift when reading from the DD RAM and writing/reading

into/from CG RAM.

0

The display does not shifting.

Share Link: