Datasheet > BU91799KV-M

BU91799KV-M

更新时间： 2022-02-26 12:55:29

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
29页	1866K
描述
Low Duty LCD Segment Driver for Automotive Application

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中文翻译

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数据手册

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BU91799KV-M 数据手册

BU91799KV-M

MAX 200 segments (SEG50×COM4)

Oscillator

The clock signals for logic and analog circuit can be generated from internal oscillator or external clock.

If internal oscillator circuit is used, OSCIN must be connected to VSS level.

When using external clock mode, input external clock from OSCIN terminal after ICSET command setting.

Clock

OSCIN

VSS

OSCIN

VSS

BU91799

Figure 11. Internal Clock Mode

Figure 12. External Clock Mode

LCD Driver Bias Circuit

BU91799KV-M generates LCD driving voltage with on-chip Buffer AMP.

And it can drive LCD at low power consumption.

1/3 or 1/2 Bias can be set by MODESET command.

Line or frame inversion can be set by DISCTL command.

Refer to the “LCD driving waveform” for each LCD bias setting.

Blink Timing Generator

BU91799KV-M has Blink function.

Blink mode is asserted by BLKCTL command.

The Blink frequency varies depending on fCLK characteristics at internal clock mode.

Refer to Oscillation Characteristics for fCLK.

Reset Initialize Condition

Initial condition after execute Software Reset is as follows.

・Display is OFF.

・DDRAM address is initialized (DDRAM Data is not initialized).

Refer to Command Description for initialize value of registers.

Command / Function List

Description List of Command / Function

No.

Command

Mode Set (MODESET)

Function

Display on/off, 1/2bias or 1/3bias setting

DDRAM address setting (00h to 31h)

Frame frequency, power save mode setting

Address Set (ADSET)

Display Control (DISCTL)

Software reset, internal/external clock setting

( P2 is MSB data of DDRAM address )

Set IC Operation (ICSET)

Blink Control (BLKCTL)

All Pixel Control (APCTL)

EVR Set 1 (EVRSET1)

EVR Set 2 (EVRSET2)

Blink off/0.5s/1s/2s blink setting

All pixels on/off during DISPON

Set EVR 1

Set EVR 2

www.rohm.com

TSZ02201-0P4P0D301050-1-2

8. Feb. 2016 Rev.001

9/25

TSZ22111･15･001

1...6 7 8910 11 12...29

中文翻译

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