BU9729K Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BU9729K

Segment-type LCD driver

ROHM Semiconductor 

Standard ICs

BU9729K

•Detailed explanation of commands

The following commands (C / D is HIGH at the 8 × nth clock of SCK) are available for the BU9729K.

(1) Address Set

MSB

LSB

0

0

0

A

A

A

A

A

Address data displayed in binary format as AAAAA is set for the address counter.

The address is incremented by two each time input of the display data (8 bits of data) is completed.

(2) Display On

MSB

LSB

0

0

1

∗

∗

∗

∗

∗

∗: Don't Care

All displays light, regardless of the contents of the display data RAM (DDRAM). At this point, the contents of the

DDRAM do not change.

(3) Display Off

MSB

LSB

0

1

0

∗

∗

∗

∗

∗

All displays go out, regardless of the contents of the DDRAM.

At this point, the contents of the DDRAM do not change.

∗: Don't Care

(4) Display Start

MSB

LSB

0

1

1

∗

∗

∗

∗

∗

The display begins, in accordance with the contents of the DDRAM.

∗: Don't Care

(5) Display Data RAM (DDRAM) Write

MSB

LSB

1

0

0

∗

D

D

D

D

∗: Don't Care

The binary 4-bit data DDDD is written to the DDRAM.

The address is that specified by the Address Set command. After this command is executed, the address is automat-

ically incremented by + 1.

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