ROHM BU9795AKV Technical data

LCD Segment Drivers

Standard
Segment Drivers

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

No.11044EBT06

●Description

ROHM standard function segment driver series achieve “Ultra-Low power consumption”. Also these drivers need not
external components. And this driver series is very simple that only has segment driver function. So, these driver series are
very suitable to add in LCD display function for various applications.

●Features (BU9795AKV/FV/GUW, BU9794AKV)

1) 3wire serial interface

2) Integrated RAM for display data (DDRAM)

3) Power supply circuit for LCD driving
1/2, 1/3Bias selectable
1/4Duty
Integrated Buffer AMP

4) Integrated Oscillation circuit

5) Integrated Power-on Reset circuit

6) No external components

7) Support blink function

8) Support standby mode

9) Low voltage / Ultra low power consumption design

10) Support unity voltage supply (BU9795AKV/FV/GUW)

11) Support Independent power supply circuit for LCD driving (BU9794AKV)

●Features (BU97950FUV/KS2)

1) 2wire serial interface

2) Integrated RAM for display data (DDRAM)

3) Integrated Power supply circuit for LCD driving
1/4 Bias 1/8 Duty
Integrated Buffer AMP

4) Integrated Oscillation circuit

5) Integrated Power-on Reset circuit

6) No external components

7) Support standby mode

8) Low voltage / Ultra low power consumption design

9) Integrated Electrical volume register (EVR) function

10) Support Register Read function

11) Support Independent power supply circuit for LCD driving

●Applications

Telephone, FAX, Portable equipment (POS, ECR, PDA etc.),
DSC, Digital video camera, Home electrical appliance, Meter equipment, Healthcare equipment etc.

www.rohm.com

© 2011 ROHM Co., Ltd. All rights reserved.

1/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

Technical Note

●Line up matrix

Parameter

KV FV GUW FUV KS2

BU9795A

Segment output 35 27

Common output 4 4
Total display

dot number

140 108 124 200 280 280

31

4

BU9794AKV

50 35 35

4 8 8

BU97950

Adjustable contrast function - - - - Yes Yes

Support split voltage supply - - - Yes Yes Yes

Interface 3wire 3wire 3wire 3wire 2wire 2wire

Package VQFP48C SSOP-B40

VBGA48W040

VQFP64 TSSOP-C48V SQFP-T52

●Absolute maximum ratings (VSS=0V)

Parameter

BU9795AKV

/FV/GUW

BU9794AKV

BU97950FUV

/KS2

Unit

Remarks

Power Supply Voltage 1
(VDD)

Power Supply Voltage 2
(VLCD)

Allowable Loss
(Pd)

-0.5～VDD -0.5～+7.0 -0.5～+7.0 V

0.6*1

2

0.7*

3

0.27*

Input Voltage Range
(VIN)

Operational Temperature Range
(Topr)

Storage Temperature Range
(Tstg)

*1 When use more than Ta=25°C, subtract 6.0mW per degree (BU9795AKV)
*2 When use more than Ta=25°C, subtract 7.0mW per degree (BU9795AFV)
*3 When use more than Ta=25°C, subtract 2.7mW per degree (BU9795AGUW)
*4 When use more than Ta=25°C, subtract 7.5mW per degree (BU9794AKV)
*5 When use more than Ta=25°C, subtract 6.4mW per degree (BU97950FUV)
*6 When use more than Ta=25°C, subtract 8.5mW per degree (BU97950FUV)

●Recommend operating conditions (Ta=-40~85°C, VSS=0V)

Parameter

BU9795AKV

/FV/GUW *

7

MIN TYP MAX MIN TYP MAX MIN TYP MAX

Power Supply Voltage 1
(VDD)

2.5 - 5.5 2.5 - 5.5 2.5 - 5.5 V Power supply

-0.5～+7.0

Power supply

V

LCD drive
Voltage

0.75*

4

0.64*5

*6

0.85

Allowable loss

W

at package only

-0.5～VDD+0.5 V

-40～+85 ℃

-55～+125 ℃

BU9794AKV BU97950KV/KS2

Unit Remarks

Power Supply Voltage 2
(VLCD)

*7 Please use VDD-VLCD  2.4V condition.

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© 2011 ROHM Co., Ltd. All rights reserved.

0 -

VDD

-2.4

2.5 - 5.5 2.5 - 5.5 V

2/15

LCD drive
Voltage

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

●Electrical characteristics

<BU9795AKV/FV/GUW>
DC Characteristics (VDD=2.5~5.5V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

MIN TYP MAX

Limits

Unit Condition

“H” level input voltage VIH 0.7VDD - VDD V SD, SCL, CSB

“L” level input voltage VIL VSS - 0.3VDD V SD, SCL, CSB

“H” level input current IIH - - 1 µA SD, SCL, CSB

“L” level input current IIL -1 - - µA SD, SCL, CSB

LCD Driver
on resistance

SEG RON - 3.5 - kΩ

COM RON - 3.5 - kΩ

Iload=±10µA

VLCD supply voltage VLCD 0 - VDD -2.4 V VDD-VLCD  2.4V

Standby current Ist - - 5 µA Display off, Oscillator off

VDD=3.3[V], Ta=25°C,

Power consumption 1 IDD1 - 12.5 30 µA

Power save mode1, FR=70Hz
1/3 bias, Frame inverse

VDD=3.3[V], Ta=25°C,

Power consumption 2 IDD2 - 20 40 µA

Normal mode, FR=80Hz
1/3 bias, Line inverse

Oscillation Characteristics (VDD=2.5~5.5V，VSS=0V, Ta=-40~85C)

Parameter Symbol

MIN TYP MAX

Limits

Unit Condition

Frame frequency fCLK 56 80 104 Hz FR = 80Hz setting

Frame frequency1 fCLK1 70 80 90 Hz

VDD=3.5V, 25C

MPU interface Characteristics(VDD=2.5V~5.5V，VSS=0V, Ta=-40~85C)

Parameter Symbol

MIN TYP MAX

Limits

Unit Condition

Input rise time tr - - 80 ns

Input fall time tf - - 80 ns

SCL cycle time tSCYC 400 - - ns

“H” SCL pulse width tSHW 100 - - ns

“L” SCL pulse width tSLW 100 - - ns

SD setup time tSDS 20 - - ns

SD hold time tSDH 50 - - ns

CSB setup time tCSS 50 - - ns

CSB hold time tCSH 50 - - ns

“H” CSB pulse width tCHW 50 - - ns

CSB

SCL

SD

tCSS

tf

tSLW

tSDS

tSDH

tSCYC

tSHW

tr

tCSH

Fig.1 Interface Timing (BU9795AKV/FV/GUW)

Technical Note

tCHW

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© 2011 ROHM Co., Ltd. All rights reserved.

3/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

ftr

Technical Note

<BU9794AKV>
DC Characteristics (VDD=2.5~5.5V, VLCD=2.5~5.5V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

MIN TYP MAX

Limits

Unit Condition

“H” level input voltage VIH 0.8VDD - VDD V SD,SCL,CSB

“L” level input voltage VIL VSS - 0.2VDD V SD,SCL,CSB

“H” level input current IIH - - 1 µA SD,SCL,CSB

“L” level input current IIL -1 - - µA SD,SCL,CSB

LCD Driver
on resistance

SEG RON - 3.5 - kΩ

COM RON - 3.5 - kΩ

Iload=±10µA

Standby current Ist - - 5 µA Display off, Oscillation off

VDD=3.3V, VLCD=5V, Ta=25°C

Power consumption 1 IDD - 5 15 µA

Power save mode1, FR=70Hz
1/3 bias, Frame inverse

VDD=3.3V, VLCD=5V, Ta=25°C

Power consumption 2 ILCD - 10 20 µA

Power save mode1, FR=70Hz
1/3 bias, Frame inverse

Oscillation Characteristics (VDD=2.5~5.5V, VLCD=2.5~5.5V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

MIN TYP MAX

Limits

Unit Condition

Frame frequency fCLK 68 80 92 Hz FR = 80Hz setting, VDD=3.3V

MPU interface Characteristics (VDD=2.5~5.5V, VLCD=2.5~5.5V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

MIN. TYP. MAX.

Limits

Unit Condition

Input rise time tr - - 80 ns

Input fall time tf - - 80 ns

SCL cycle time tSCYC 400 - - ns

“H” SCL pulse width tSHW 100 - - ns

“L” SCL pulse width tSLW 100 - - ns

SD setup time tSDS 20 - - ns

SD hold time tSDH 50 - - ns

CSB setup time tCSS 50 - - ns

CSB hold time tCSH 50 - - ns

“H” CSB pulse time tCHW 50 - - ns

tCHW

CSB

tCSS

tCSH

SCL

t

tSLW

tSDS

tSCYC

tSHW

tSDH

SD

Fig.2 Interface Timing (BU9794AKV)

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© 2011 ROHM Co., Ltd. All rights reserved.

4/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

r

<BU97950FUV/KS2>
DC Characteristics (VDD=2.5~5.5V, VLCD=2.5~5.5V, VSS=0V, Ta=-40~85 ºC, unless otherwise specified)

Parameter Symbol

“H” level input voltage VIH 0.7VDD - VDD V SDA,SCL

“L” level input voltage VIL VSS - 0.3VDD V SDA,SCL

“H” level input current IIH - - 1 µA SDA,SCL

“L” level input current IIL -1 - - µA SDA,SCL

LCD Driver on
resistance

Standby current Ist - - 5 µA Display off, Oscillation off

Power consumption 1 IDD - 2.5 15 µA

Power consumption 2 ILCD - 10 20 µA

Oscillation Characteristics (VDD=2.5~5.5V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

Frame frequency fCLK 56 80 104 Hz Power save mode FR = Normal mode

MPU interface Characteristics (VDD=2.5~5.5V, VLCD=0V, VSS=0V, Ta=-40~85C, unless otherwise specified)

Parameter Symbol

Input rise time tr - - 0.3 µs

Input fall time tf - - 0.3 µs

SCL cycle time tSCYC 2.5 - - µs

“H” SCL pulse width tSHW 0.6 - - µs

“L” SCL pulse width tSLW 1.3 - - µs

SDA setup time tSDS 100 - - ns

SDA hold time tSDH 100 - - ns

Bus free time tBUF 1.3 - - µs

START condition hold time tHD;STA 0.6 - - µs

START condition setup time tSU;STA 0.6 - - µs

STOP condition setup time tSU;STO 0.6 - - µs

SDA

S CL

SDA

SEG RON - 3.5 - kΩ

COM RON - 3.5 - kΩ

t BUF

tHD;STA

MIN TYP MAX

MIN TYP MAX

MIN. TYP. MAX.

tSLW

t

Fig.3 interface timing (BU97950FUV)

Limits

Limits

Limits

tSU;STA

tr

tSDH

Unit Conditions

Iload=±10µA

VDD=3.3V, VLCD=5V, Ta=25 ºC
Power save mode1, FR=80Hz
1/4 bias, Frame inverse
VDD=3.3V, VLCD=5V, Ta=25 ºC
Power save mode1, FR=80Hz
1/4 bias, Frame inverse

Unit Condition

Unit Condition

tSHW

tf

tSDS

tSCYC

Technical Note

t SU;STO

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© 2011 ROHM Co., Ltd. All rights reserved.

5/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

－

－

Technical Note

●Block Diagram / Pin Arrangement / Terminal Description

<BU9795AKV>

●Block Diagram ●Pin Arrangement

VDD

VLCD

OSCIN

INHb

LCD voltage generator

＋

＋

OSCILLATOR

LCD
BIAS

SELECTOR

Power On Reset

VSS

COM0……COM3 SEG0……SEG34

common

driver

blink timing

generator

Command

register

CSB TEST

Data Decoder

serial inter face

IF FILTER

SD SCL

common

counter

Segment

driver

DDRAM

Command

COM0

SEG34

SEG33

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

36

37

COM1 SEG23

COM2 SEG22

COM3 SEG21

VLCD SEG20

VDD SEG19

VSS SEG18

OSCIN SEG17

CSB SEG16

SCL SE G15

SD SEG14

TEST SEG13

INHb SEG12

48

1

1

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG24

25

2

2
1

1

SEG8

SEG9

SEG10

SEG11

Fig.4 Block Diagram (BU9795AKV) Fig.5 Pin Arrangement (BU9795AKV)

●Terminal Description

24

13

Terminal Terminal No. I/O Function

INHb 48 I

TEST 47 I

Input terminal for turn off display
H: turn on display L: turn off display

Test input (ROHM use only)
Must be connect to VSS

External clock input

OSCIN 43 I

Ext clock and Int clock can be changed by command.
Must be connect to VSS when use internal oscillation circuit.

SD 46 I serial data input

SCL 45 I serial data transfer clock

CSB 44 I Chip select : “L” active

VSS 42 GND

VDD 41 Power supply

VLCD 40 Power supply for LCD driving

SEG0-34 1-35 O SEGMENT output for LCD driving

COM0-3 36-39 O COMMON output for LCD driving

www.rohm.com

© 2011 ROHM Co., Ltd. All rights reserved.

6/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

－

Technical Note

<BU9795AFV>

●Block Diagram ●Pin Arrangement

VDD

VLCD

INHb

OSCIN

LCD voltage generator

＋

＋

－

OSCILLATOR

LCD

BIAS

SELECTOR

Power On Reset

VSS

COM0……COM3 SEG4……SEG30

common

driver

blink timing

generator

Command

register

CSB TEST

serial inter face

IF FILTER

SD SCL

common
counter

Segment

driver

DDRAM

Command

Data Decoder

INHb

SDA

CSB

SCL

SEG5

SEG6

SEG7

40

1 20

SEG8

SEG9

SEG10

TEST

SEG4

SEG11

SEG12

SEG13

SEG16

SEG14

SEG15

VDD

VLCD

VSS

OSCIN

SEG17

SEG19

SEG18

COM2

COM3

COM1

SEG22

SEG21

SEG20

SEG23

Fig.6 Block Diagram (BU9795AFV) Fig.7 Pin Arrangement (BU9795AFV)

●Terminal Description

COM0

SEG24

SEG30

SEG28

SEG29

21

SEG26

SEG25

SEG27

Terminal Terminal No. I/O Function

INHb 36 I

TEST 35 I

Input terminal for turn off display
H: turn on display L: turn off display

Test input (ROHM use only)
Must be connect to VSS

External clock input

OSCIN 31 I

Ex clock and Int clock can be changed by command.
Must be connect to VSS when use internal oscillation circuit.

SD 34 I serial data input

SCL 33 I serial data transfer clock

CSB 32 I Chip select : “L” active

VSS 30 GND

VDD 29 Power supply

VLCD 28 I Power supply for LCD driving

SEG4-30

1-23,

37-40

O SEGMENT output for LCD driving

COM0-3 24-27 O COMMON output for LCD driving

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© 2011 ROHM Co., Ltd. All rights reserved.

7/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

－

－

A

Technical Note

<BU9795AGUW>

●Block Diagram ●Pin Arrangement

VDD

VLCD

LCD voltage generator

＋

＋

LCD

BIAS

SELECTOR

COM0……COM3 SEG2……SEG32

common

driver

common
counter

blink timing

generator

Segment

driver

DDRAM

1234567

G (NC) SEG13 SEG15 SEG18 SEG20 SEG22 (NC)

F SEG11 SEG12 SEG16 SEG17 SEG21 SEG23 SEG24

E SEG9 SEG10 SEG14 SEG19 SEG25 SEG27 SEG26

D SEG7 SEG6 SEG8 SEG5 SEG30 SEG28 SEG29

INHb

OSCIN

OSCILLATOR

Power On Reset

Command

register

VSS

CSB TEST

Command

Data Decoder

serial inter face

IF FILTER

SD SCL

C SEG4 SEG3 SEG2 CSB COM3 SEG32 SEG31

B INHb SD VSS VDD COM1 COM0

(NC) TEST2 SCL OSCIN VLCD COM2 (NC)

Fig.8 Block Diagram (BU9795AGUW) Fig.9 Pin Arrangement (BU9795AGUW)

●Terminal Description

Terminal I/O Function

INHb I

TEST I

Input terminal for turn off display
H: turn on display L: turn off display

Test input (ROHM use only)
Must be connect to VSS

External clock input

OSCIN I

Ex clock and Int clock can be changed by command.
Must be connect to VSS when use internal oscillation circuit.

SD I serial data input

SCL I serial data transfer clock

CSB I Chip select : “L” active

VSS GND

VDD Power supply

VLCD I Power supply for LCD driving

SEG2-32 O SEGMENT output for LCD driving

COM0-3 O COMMON output for LCD driving

(Caution) About terminal number, please refer to above pin arrangement

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© 2011 ROHM Co., Ltd. All rights reserved.

8/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

Technical Note

<BU9794AKV>

●Block Diagram ●Pin Arrangement

VLCD

INHb

OSCIN

LCD voltage generator

＋

－

＋

－

VSS

OSCILLATOR

LCD

BIAS

SELECTOR

Power On Reset

VDD

VSS

TEST2

COM0……CO M3 SEG0……SEG49

common

driver

common
counter

blink timi ng

generator

Command

register

CSB TEST 1

serial inter face

IF FILTER

SD SCL

Segment

driver

DDRAM

Command

Data Decoder

SEG38 SEG21

SEG39 SEG20

SEG40 SEG19

SEG41 SEG18

SEG42 SEG17

SEG43 SEG16

SEG44 SEG15

SEG45 SEG14

SEG46 SEG13

SEG47 SEG12

SEG48 SEG11

SEG49 SEG10

COM0 SEG9

COM1 SEG8

COM2 SEG7

COM3 SEG6

SEG37

SEG36

SEG35

SEG34

SEG33

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

48

49

64

1

1

VSS

VDD

VLCD

SD

SCL

CSB

INHb

SEG0

SEG1

TEST1

OSCIN

TEST2

SEG22

33

6

6
1

1

SEG2

SEG3

SEG4

SEG5

Fig.10 Block Diagram (BU9794AKV) Fig.11 Pin Arrangement (BU9794AKV)

●Terminal Description

32

17

Terminal Terminal No. I/O Function

INHb 8 I

TEST1 9 I

TEST2 10 I

Input terminal for turn off display
H: turn on display, L: turn off display

Test input (ROHM use only)
Must be connect to VSS

Test input (ROHM use only)
Must be connect to VSS

External clock input

OSCIN 4 I

Ex clock and Int clock can be changed by command.
Must be connect to VSS when use internal oscillation circuit.

SD 7 I serial data input

SCL 6 I serial data transfer clock

CSB 5 I Chip select : “L” active

VSS 3 GND

VDD 2 Power supply

VLCD 1 Power supply for LCD driving

SEG0-49 11-60 O SEGMENT output for LCD driving

COM0-3 61-64 O COMMON output for LCD driving

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© 2011 ROHM Co., Ltd. All rights reserved.

9/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

Technical Note

<BU97950FUV>

●Block Diagram ●Pin Arrangement

VLCD

VSS

LCD voltage generat or

＋

－

＋

－

＋

－

＋

－

SELEC TOR

LCD

BIAS

COM0……COM7 S EG0……SEG34

common

counter

common

driver

Segm ent

driver

DDRAM

SDA

SCL

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

SEG33

SEG34

COM0

COM1

COM2

COM3

COM4

OSCILLATOR

Power On Reset

VDD

Comman d

register

Data Dec oder

serial inter face

IF FILTER

Comma nd

VSS

VDD

VLCD

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG12

SEG11

SEG10

SEG3

SDA SCL

Fig.12 Block Diagram (BU97950FUV) Fig.13 Pin Arrangement (BU97950FUV)

●Terminal Description

COM5

COM6

COM7

SEG2

SEG1

SEG0

Terminal Terminal No. I/O Function

SDA 48 I/O

serial data input
register read data output port

SCL 47 I serial data transfer clock

VSS 3 I GND

VDD 1 I Power supply

VLCD 2 I Power supply for LCD driving

SEG0-35

4-24

33-46

O SEGMENT output for LCD driving

COM0-7 25-32 O COMMON output for LCD driving

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© 2011 ROHM Co., Ltd. All rights reserved.

10/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

Technical Note

<BU97950KS2>

●Block Diagram ●Pin Arrangement

VLCD

VSS

LCD voltage generat or

＋

－

＋

－

＋

－

＋

－

SELEC TOR

LCD

BIAS

OSCILLATOR

Power On Reset

VDD

COM0……COM7 S EG0……SEG34

common

counter

Comman d

common

driver

register

serial inter face

IF FILTER

Data Dec oder

Segm ent

driver

DDRAM

Comma nd

SEG5 SEG18

SEG4 SEG19

SEG3 SEG20

SEG2 VSS

SEG1 VLCD

SEG0 VDD

COM7 SDA

COM6 SCL

COM5 SEG21

COM4 SEG22

COM3 SEG23

COM2 SEG24

COM1 SEG25

SEG6

SEG7

39

40

52

1

NC

COM0

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG8

SEG9

SEG34

SEG33

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG17

NC

NC

NC

13

SEG26

SDA SCL

Fig.14 Block Diagram (BU97950KS2) Fig.15 Pin Arrangement (BU97950KS2)

●Terminal Description

27

26

14

Terminal Terminal No. I/O Function

SDA 20 I/O serial data input

SCL 19 I serial data transfer clock

VSS 23 I GND

VDD 21 I Power supply

VLCD 22 I Power supply for LCD driving

3-11

SEG0-35

24-27

O SEGMENT output for LCD driving

29-45

COM0-7

2

46-52

O COMMON output for LCD driving

NC 1,12,13,28 - No connected

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© 2011 ROHM Co., Ltd. All rights reserved.

11/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

●IO Equivalent Circuit

<BU9795AKV/FV/GUW>

VDD

VLCD

VSS

VDD

SD, SCL

VSS

VDD

OSCIN

VSS

VDD

VSS

CSB, INHb, TEST

VDD

VSS

VDD

SEG/COM

VLCD

Fig.16 I/O equivalent circuit (BU9795AKV/FV/GUW)

<BU9794AKV>

VDD

VLCD

VSS

CSB, SD, SCL

INHb,TEST1,TEST2

VDD

VSS

VDD

VSS

VLCD

SEG/COM

VSS

OSCIN

Fig.17 I/O equivalent circuit (BU9794AKV)

Technical Note

VSS

VDD

VSS

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© 2011 ROHM Co., Ltd. All rights reserved.

12/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

<BU97950FUV>

VDD

VLCD

VSS

VSS

SDA

SCL

VSS

VSS

VLCD

SEG/COM

VSS

Fig.18 I/O equivalent circuit (BU97950FUV/KS2)

Technical Note

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© 2011 ROHM Co., Ltd. All rights reserved.

13/15

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

Technical Note

●Ordering part number

B U 9 7 9 4 A K V - E 2

Part No. Part No.

BU9794A
BU9795A
BU97950

Package

FV : SSOP-B40
GUW : VBGA048W040
KV : VQFP48C
KV : VQFP64
FUV : TSSOP-C48V
KS2 : SQFP-T52

Packaging and forming specification
E2: Embossed tape and reel

SSOP-B40

13.6 ± 0.2

(MAX 13.95 include BURR)

40

21

1.8 ± 0.1

7.8 ± 0.3

5.4 ± 0.2

1

0.1

0.65

0.22 ± 0.1

0.08

20

M

0.5 ± 0.2

0.15 ± 0.1

0.1 S

(Unit : mm)

<Tape and Reel information>

Embossed carrier tapeTape

Quantity

Direction
of feed

2000pcs
E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

1pin

Order quantity needs to be multiple of the minimum quantity.

∗

Direction of feed

VBGA048W040

4.0± 0.1

1PIN MARK

4.0± 0.1

0.10

48-φ0.295±0.05

0.08 S

P=0.5× 6

0.5± 0.1

M

φ

ABS

0.05

G
F
E

C
B
A

1

2

3

0.9MAX

S

A

0.5

0.5± 0.1

B

0.5

4

P=0.5× 6

6D5

7

(Unit : mm)

<Tape and Reel information>

Embossed carrier tape (with dry pack)Tape

Quantity

Direction
of feed

2500pcs
E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

1pin

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

∗

TSSOP-C48V

12.5±0.1

(MAX 12.85 include BURR)

48 25

8.1±0.2

6.1±0.1

1

0.5

1PIN MARK

1.0MAX

www.rohm.com

0.85±0.05

0.5

0.08±0.08

© 2011 ROHM Co., Ltd. All rights reserved.

0.08 S

24

+0.05

−0.04

0.22

+6

4

−4

S

0.5±0.15

1.0±0.2

+0.05

0.17

−0.03

M

0.08

(Unit : mm)

<Tape and Reel information>

Embossed carrier tape (with dry pack)Tape

Quantity

Direction
of feed

2000pcs
E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

14/15

1pin

Order quantity needs to be multiple of the minimum quantity.

∗

Direction of feed

2011.11 - Rev.B

BU9795AKV/FV/GUW,BU9794AKV,BU97950FUV/KS2

VQFP48C

<Tape and Reel information>

Quantity

Direction
of feed

1.0±0.2

Embossed carrier tapeTape
1500pcs

E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

9.0± 0.2

1.6MAX

1.4± 0.05

9.0± 0.2

7.0± 0.1

36

37

7.0± 0.1

48

0.75

0.5± 0.1

0.1± 0.05

25

121

1PIN MARK

0.22

+0.05

-

0.04

24

13

0.08 S

0.75

0.145

0.08

+0.05

-

0.03

+6

4

-

M

0.5±0.15

4

(Unit : mm)

VQFP64

<Tape and Reel information>

Embossed carrier tape (with dry pack)Tape

Quantity

Direction
of feed

1000pcs
E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

Reel

12.0±0.2

1.6MAX

10.0±0.1

1.4±0.05

1.25

12.0±0.2

10.0±0.1

48

49

64

1

0.1±0.05

1PIN MARK

0.5±0.1

33

32

1.25

17

16

+6

4

4

-

0.08

S

+0.05

0.2

-

0.04

0.08

M

0.145

0.5±0.15

+0.05

-

0.03

1.0±0.2

(Unit : mm)

1pin

Order quantity needs to be multiple of the minimum quantity.

∗

1pin

Order quantity needs to be multiple of the minimum quantity.

∗

Direction of feed

Direction of feed

Technical Note

SQFP-T52

10.0± 0.2

12.0± 0.3

1.4± 0.1

0.1± 0.1

12.0± 0.3

10.0± 0.2

39

40

52

1

0.65

27

13

0.3± 0.1

26

14

0.15

0.5

0.125± 0.1

(Unit : mm)

<Tape and Reel information>

Tray (with dry pack)Container
Quantity
Direction of feed

1pin

1000pcs

Direction of product is fixed in a tray

Order quantity needs to be multiple of the minimum quantity.

∗

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© 2011 ROHM Co., Ltd. All rights reserved.

15/15

2011.11 - Rev.B

Notes

No copying or reproduction of this document, in par t or in whole, is permitted without the
consent of ROHM Co.,Ltd.

The content specied herein is subject to change for improvement without notice.

The content specied herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specications,
which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.

The technical information specied herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.

The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).

The Products specied in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, re or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injur y (such as a medical
instrument, transportation equipment, aerospace machiner y, nuclear-reactor controller, fuel­controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specied herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.

Notice

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© 2011 ROHM Co., Ltd. All rights reserved.

Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

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R1120

A