BU9706KS Rohm Semiconductor, BU9706KS Datasheet

IC LCD SEGMENT DRIVER SQFP56

BU9706KS

Manufacturer Part Number
BU9706KS
Description
IC LCD SEGMENT DRIVER SQFP56
Manufacturer
Rohm Semiconductor
Datasheet

Specifications of BU9706KS

Display Type
LCD
Interface
Serial
Voltage - Supply
3.5 V ~ 6.0 V
Operating Temperature
-20°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-SQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Configuration
-
Digits Or Characters
-
The BU9706KS is a 40-output LCD segment driver provided with a 40-bit shift register and a 40-bit latch.
As the 40-bit shift register can be divided into two 20-bit sections, it can be used efficiently, based on the number of
segments and the character configuration.
Also, by using a number of BU9706KS drivers, it is possible to configure an LCD segment driver of more than 80
bits.
As the liquid crystal drive voltage can be set externally to any value, it can be used as a driver IC for both static and
dynamic drive in various types of liquid crystal display panels.
1) 40-bit shift register and 40-bit latch enable serial
2) Shift register can be divided into two 20-bit sections.
3) Power supply voltage: 3.5 to 6V.
4) LCD drive voltage: 3 to 6V.
Features
Block diagram
LCD segment driver
BU9706KS
Standard ICs
input - parallel output.
LOAD
V
V
CP
DF
DI
V
V
V
DD
SS
2
3
5
I
49
43
44
45
51
47
53
48
42
O
41
D
CK
1
O
40
20 bit SHIFT REGISTER
2
O
39
3
20
40 bit Latch
DO
LCD Dr
54
20
40
5) Can accommodates duty of 1 / 8 to 1 / 16.
6) Can be used as a driver IC for static drive by setting
DI
55
21
the liquid crystal drive voltage externally (V3 = V
V2 = V5 = V
D
CK
20-bit SHIFT REGISTER
SS
, connect DF as LCD common).
20
O
4
38
O
3
39
O
2
40
1
DO
40
DD
1
,

Related parts for BU9706KS

BU9706KS Summary of contents

Page 1

... As the 40-bit shift register can be divided into two 20-bit sections, it can be used efficiently, based on the number of segments and the character configuration. Also, by using a number of BU9706KS drivers possible to configure an LCD segment driver of more than 80 bits. As the liquid crystal drive voltage can be set externally to any value, it can be used as a driver IC for both static and dynamic drive in various types of liquid crystal display panels. • ...

Page 2

... The LCD power supply voltage must satisfy the condition of V • Pin assignments N.C. 46 LOAD BU9706KS 0V) SS Symbol Limits V – – 6 – 500 Topr – Tstg – 125 > > 0V) SS Symbol Min. Typ. Max. V 3.5 — 6 – V 3.0 — 6 — > > BU9706KS Unit Unit ...

Page 3

... Data output pin for the shift register ( bits). Data is output in synchronization with the clock signal falling edge used to configure an LCD driver with more than 40 bits by connecting it to the DI pin of the BU9706KS at the next stage. Clock signal input pin for the shift register. The contents of the shift register are shifted by 1 bit only at the clock signal falling edge ...

Page 4

... V) Unit Conditions — V — – 0.4mA – 0.25V load pin voltage Unit Conditions CP DO delay time Load O delay time delay time n ns — ns — — — — — MHz DUTY = 50% BU9706KS ...

Page 5

... SEG 40 D Controller (CP) (CP) 0.8V 0. 0.2V 0. sLH hLH t t sHL hHL 0. pLH t pHL 0. 0. (L) 0. ( output amplitude becomes 80% and 20% respectively Fig.2 AC characteristics waveform LCD panel (16 commons, 120 segments BU9706KS DI 21 Fig.3 BU9706KS 0. 0. BU9706KS ...

Page 6

... Standard ICs • External dimensions (Units: mm) 12.4 0.3 10.0 0 0.65 0.3 0.1 SQFP56 6 0.15 0.1 0.15 BU9706KS ...

Page 7

Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...

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