NJU6624A 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU6624A

12-CHARACTER 1-LINE DOT MATRIX LCD CONTROLLER DRIVER with SMOOTH SCROLL FUNCTION

Japan Radio Corporation  

NJU6624A/B

(4-1)Description of each instructions

(a)Maker Testing

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Code MS1 MS0 0 1 1 1 1 1 * * * * * * * *

This code 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 check the output condition of Enable signal when the power turns on.)

(b)Clear Display

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Code MS1 MS0 0 1 1 0 0 1 * * * * * * * *

When this instruction is executed, the space code (20)H is written into every DD RAM address, the DD RAM

address (00)H is set into the address counter and entry mode is set to increment.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

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Code MS1 MS0 0 1 0 0 0 1 * * * * * * * *

Return home instruction is executed, the DD RAM address (00)H is set into the address counter. Display is

returned its original position if shifted. The DD RAM contents do not change.

(d)Entry Mode Set

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Code MS1 MS0 0 0 1 0 0 0 * * * * * * I/D S

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

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 whole display shift in the DD RAM writing.

I/D

Function

Address increment: The address of the DD RAM or MK RAM or CG RAM

1

increment ( +1) when the write.

Address decrement: The address of the DD RAM or MK RAM or CG RAM

0

decrement:( -1) when the write.

S

F u n c\ t i o n

Whole display shift.

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

1

right at the I/D=0.

The display does not shift when writing into CG, MK RAM.

0

The display does not shift.

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