BU9910KV Ver la hoja de datos (PDF) - ROHM Semiconductor

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componentes Descripción

Fabricante

BU9910KV

Status display LCD driver for PCs with I2C Bus interface

ROHM Semiconductor 

Multimedia ICs

BU9910KV

(2) Data structure

1) Wrote Mode

S

Address

2) Read Mode

1. Command register set

S

Address

W– A Command Reg. Byte A

Write Data Byte

Auto Increment

AP

W– A Command Reg. Byte A

2. Preset command register

S

Address

Sr

Address

RA

Read Data Byte

Auto Increment

RA

Read Data Byte

Auto Increment

–A P

∗ In multi-master application, the preset command register mode is prohibited.

–A P

(3) Mode settings table

1) Command Register (commands and pointers)

S: Start condition

P: Stop condition

Sr: Restart condition

A: Acknowledge

A: Acknowledge bar

D7

D6

D5

D4

D3

Disp

Frame freq.

Blink freq.

The all bit may be "0"during the reset procedure.

D2

D1

D0

Pointer register

D7: Display control

0: Light (depend on the LCD segment data memory status )

1: All off

D6, D5: Frame frequency select

D6

D5

f0

0

0 32Hz (default)

0

1

64Hz

1

0

128Hz

1

1

256Hz

At fosc = 32.768kHz

D4: Blink frequency select

0: Blink frequency = 0.5Hz (default)

1: Blink frequency = 1Hz

10

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