BU9728 데이터 시트보기 (PDF) - ROHM Semiconductor

부품명

상세내역

제조사

BU9728

For 128～ 140 Segment type LCD, LCD Segment Driver

ROHM Semiconductor 

● Recommendation circuit example (BU9728AKV)

It can use as a resistance for the

contrast adjustment when variable

resistance is given to the V3-VSS

space. The resistance of the outside

and resistance with built-in

BU9728AKV become the right

figures in this case.

The value of RC is to decide the

value which met a system referring

to the circuit of the right figure.

5.0V

VDD

V1

V2

V3

1MΩ

1MΩ

1MΩ

RC

VSS

GND

The value (1MΩ) of the

built-in resistance value

inside the figure is

reference value. Value

varies according to

terms of manufacture

and so on.

Fig. BU9728AKV-11 When a contrast adjustment mechanism is used.

● INPUT OUTPUT CIRCUIT (BU9728AKV)

Name I/O

SD

I

SCK

C / D ______________

__________

CS

IN

Circuit

VDD

GND

Name I/O

SEG0 O

～

SEG31

COM0

～

COM3

Circuit

VLCD

OUT

GND

VLCD

GND

Name I/O

OSC1

OSC2

OSC1

OSC2

Circuit

VDD

GND

VDD

GND

Name

RESET _______________________

I/O

I

IN

Circuit

VDD

VDD

GND

Fig. BU9728AKV-14 INPUT OUTPUT circuit

7/23

Share Link: