Datasheet > BU9728AKV_08

BU9728AKV_08

更新时间： 2022-04-20 09:21:59

品牌	Logo	应用领域
罗姆 - ROHM		驱动器
页数	文件大小	规格书
24页	593K
描述
For 128-140 Segment type LCD LCD Segment Driver

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数据手册

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BU9728AKV_08 数据手册

TECHNICAL NOTE

LCD Segment Driver series

For 128～140 Segment type LCD

LCD Segment Driver

BU9728AKV, BU9795AKV/FV/GUW

● Outline

This is LCD segment driver for 126 to 140 segment type display. There is a lineup which is suitable for

multi function display and is integrated display RAM and power supply circuit for LCD driving with 4

common output type: BU9728AKV and BU9795AKV/FV/GUW.

○ 128Segment (SEG32×COM4) Driver BU9728AKV

○ 140Segment (SEG35×COM4) Driver BU9795AKV/FV/GUW

・・・・・・・P.1

・・・・・・・P.10

BU9728AKV 128Segment (SEG32×COM4) Driver

● Feature (BU9728AKV)

______________

__________

1) 4wire serial interface (SCK, SD, C/D, CS)

2) Integrated RAM for display data (DDRAM) : 32 × 4bit (Max 128 Segment)

3) LCD driving port: 4 Common output, 32 Segment output

4) Display duty: 1/4 duty

5) Integrated Oscillator circuit (external resister type)

6) Integrated Power supply circuit for LCD driving (1/3 bias)

7) Low voltage / low power consumption design: +2.5～5.5V

● Uses (BU9728AKV)

DVC, Car audio, Telephone

● Absolute Maximum Ratings (Ta=25degree, VSS=0V) (BU9728AKV)

Parameter

Symbol

VDD

Limits

～

Unit

Remarks

Power Supply Voltage1

Power Supply Voltage2

-0.3

+7.0

Power supply

LCD drive voltage

VLCD

～

When use more than Ta=25C, subtract

4mW per degree.

Allowable loss

400

Operational temperature range

Storage temperature range

Input voltage range

Topr

Tstg

-40

-55

～

+85

degree

～

+125

degree

VIN

-0.3 to VDD+0.3

Output voltage range

VOUT

*This product is not designed against radioactive ray.

● Recommend operating conditions (Ta=25degree, VSS=0V) (BU9728AKV)

Parameter

Symbol

VDD

VLCD

fOSC

MIN

2.5

TYP

MAX

5.5

VDD

Unit

Remarks

Power Supply Voltage1

Power Supply Voltage2

Oscillator frequency

VDD≧V1≧V2≧V3≧VSS

KHz

Rf=470kΩ

This document is not delivery specifications.

Jul. 2008

12 3 4 5 6 7...24

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