MSM6222B-XX 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM6222B-XX

DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER

Oki Electric Industry 

¡ Semiconductor

MSM6222B-xx

(3) Entry mode setting

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

Instruction code L L L L L L L H I/D SH

1 When the I/D is set, the 8-bit character code is written or read to and from the DD

RAM, the cursor and blink shift to the right by 1 character position (I/D = "H";

increment) or to the left by 1 character position (I/D = "L"; decrement).

The address counter is incremented (I/D = "H") or decremented (I/D = "L") by 1 at

this time. Even after the character pattern code is written or read to and from the

CG RAM, the address counter (ADC) is incremented (I/D = "H") or decremented

(I/D = "L") by 1.

2 When SH = "H" is set, the character code is written to the DD RAM. Then the cursor

and blink stop and the entire display shifts to the left (I/D = "H") or to the right (I/

D = "L") by 1 character position.

When the character is read from the DD RAM during SH = "H", or when the

character pattern data is written or read to or from the CG RAM during SH = "H",

the entire display does not shift, but normal write/read is performed (the entire

display does not shift, but the cursor and blink shift to the right (I/D = "H") or to the

left (I/D = "L") by 1 character position.

When SH = "L" is set, the display does not shift, but normal write/read is performed.

The execution time when the OSC oscillation frequency is 250 kHz is 40 ms.

(4) Display mode setting

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

Instruction code L L L L L L H DI C B

1 The DI bit controls whether the character pattern is displayed or not displayed.

When DI is "H", this bit makes the LCD display the character pattern.

When DI is "L", the LCD character pattern is not displayed. The cursor and blink

are also cancelled at this time.

(Note) Unlike the display clear, the character code is not rewritten at all.

2 The cursor is not displayed when C = "L" and is displayed when DI = "H" and C =

"H".

3 The blink is cancelled when B = "L" and is executed when DI = "H" and B = "H".

In the blink mode, all dots (including the cursor), displaying character pattern, and

cursor are displayed alternately at 409.6 ms (in 5 x 7 dots character font) or 563.2 ms

(in 5 x 10 dots character font) when the OSC oscillation frequency is 250 kHz. The

execution time when the OSC oscillation frequency is 250 kHz is 40 ms.

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