LC7942YC datasheet, PDF - EEWORLD Datasheet

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LC7942YC: DescriptionLC7942YC; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size131KB，8 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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LC7942YC Overview

LC7942YC

LC7942YC Parametric

Parameter Name	Attribute value
Maker	ON Semiconductor
package instruction	DIE, DIE OR CHIP
Reach Compliance Code	compliant
data entry mode	SERIAL
display mode	DOT MATRIX
Interface integrated circuit type	LIQUID CRYSTAL DISPLAY DRIVER
JESD-30 code	R-XUUC-N80
Multiplex display function	NO
Number of functions	1
Number of segments	64
Number of terminals	80
Maximum operating temperature	85 °C
Minimum operating temperature	-20 °C
Package body material	UNSPECIFIED
encapsulated code	DIE
Encapsulate equivalent code	DIE OR CHIP
Package shape	RECTANGULAR
Package form	UNCASED CHIP
Maximum supply voltage	5.5 V
Minimum supply voltage	2.7 V
Supply voltage 1-max	20 V
Mains voltage 1-minute	8 V
surface mount	YES
technology	CMOS
Temperature level	OTHER
Terminal form	NO LEAD
Terminal location	UPPER
minfmax	1 MHz

LC7942YC Preview

Ordering number: EN 6159

CMOS IC

LC7942YC

Dot-matrix LCD Driver

Overview

The LC7942YC is a common driver IC for driving large,

dot

–

matrix LCD displays. It features a built

–

in 64

–

bit

bidirectional shift register and a 4

–

level LCD driver. It can

also be connected in cascade to increase the number of

bits.

The LC7942YC is designed to be used with LC7940YC or

LC7941YC segment drivers to drive large LCD panels.

Features

•

64 built

–

in LCD display drive circuits

l/64 to 1/128 display duty cycle

Input/outputs for cascade connection

Bias supply voltages can be supplied externally

Operating supply voltage and ambient temperature

- 2.7 to 5.5V logic supply (V

DD

) at Ta =

–

20 to +85 °C

- 8 to 20 V LCD supply (V

DD

–

V

EE

) at Ta =

–

20 to

+85 °C

• CMOS process

s

Any and all SANYO products described or contained herein do not have speciﬁcations that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products speciﬁcations of any and all SANYO products described or contained

herein.

s

SANYO Electric Co., Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

63099RM (ID) No. 6159—1/8

LC7942YC

Pad Layout (Top view)

O40

O39

O38

O37

O36

O35

O34

O33

O32

O31

O30

O29

O28

O27

O26

O41

O42

O43

O44

O45

O46

O47

O48

O49

O50

O51

O52

O53

O54

O55

O56

O57

O58

O59

O60

O61

O62

O63

VEE

V5

O64

DIO64

V2

V1

DISPOFF

RS/LS

VDD

VSS

DIO1

M

CP

O25

O24

O23

O22

O21

O20

O19

O18

O17

O16

O15

O14

O13

O12

O11

O10

O9

O8

O7

O6

O5

O4

O3

O2

O1

LC7942YC

Block Diagram

01

02

03

063 064

V1

V2

V5

V

EE

4 Level LCD Drive Circuit

(64 bits)

V

DD

V

SS

Level Shifter (64 bits)

M

DISP OFF

Bidirectional

DIO1

I/O

Shift Register

(64 bits)

I/O

DIO64

CP

RS/LS

No. 6159—2/8

LC7942YC

LC7942YC Pad Location

chip size : 3.200 mm x 3.970 mm

Pin_No.

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

1

2

3

4

5

6

7

8

9

10

Name

O1

O2

O3

O4

O5

O6

O7

O8

O9

O10

O11

O12

O13

O14

O15

O16

O17

O18

O19

O20

O21

O22

O23

O24

O25

O26

O27

O28

O29

O30

O31

O32

O33

O34

O35

O36

O37

O38

O39

O40

O41

O42

O43

O44

O45

O46

O47

O48

O49

O50

X

-1425.9

-1236

-1053

-875

-704

-538

-378

-223

-73

73

223

378

538

704

875

1053

1236

1425.9

Y

1808

1635

1465

1298

1134

973

815

660

508

359

213

70

-70

-213

-359

-508

-660

-815

-973

-1134

-1298

-1465

-1635

-1808

-1635

-1465

-1298

-1134

-973

-815

-660

-508

-359

Pin_No.

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

Name

O51

O52

O53

O54

O55

O56

O57

O58

O59

O60

O61

O62

O63

O64

DIO64

---

V

EE

V

5

V

2

V

1

DISPOFF

V

DD

RS/LS

V

SS

---

M

---

CP

---

DIO1

X

1425.9

1096

---

880

689

498

318

143

-37

-213

-393

---

-598

---

-835

---

-1056

Y

-213

-70

70

213

359

508

660

815

973

1134

1298

1465

1635

1808

1768

---

1728

1768

1753

---

1768

---

1768

---

1768

No. 6159—3/8

LC7942YC

Pin Functions

Number

32

34

27

30

29

28

38

40

25

33

36

31

Name

V

DD

V

SS

V

EE

V

1

V

2

V

5

CP

DIO1

DIO64

RS/LS

M

DISP OFF

I

I/O

I

RS/LS

LOW (rlght shift)

HIGH (left shift)

DIO1

Input

Output

DIO64

Output

Input

Shift direction

O1

O64

O1

Supply

LCD panel drive voltage supplies.

V

1

and V

EE

are selected levels.

V

2

and V

5

are not–selected levels.

Display data input clock (falling–edge trigger).

Supply

V

DD

– V

ss

is the logic supply.

V

DD

– V

EE

is the LCD supply.

I/O

Function

LCD panel drive voltage output alternation control signal.

O1 to O64 output control input pins.

LCD drive outputs

The output drive level is determined by the display data, M signal and DISPOFF input as show below.

41 to 80

O1 to O40

M

LOW

O

HIGH

Q

LOW

HIGH

LOW

HIGH

×

DISPOFF

HIGH

LOW

Output

V

2

V

EE

V

5

V

1

V

1

1 to 24

O41 to O64

×

Note

×

= don’t care (tied HIGH or LOW)

26

35

37

39

NC

–

NC

No connection.

Speciﬁcations

The following electrical characteristics apply when sealed in a Sanyo standard QIC-80 package.

Absolute Maximum Ratings

at Ta = 25 ±2°C, V

SS

= 0 V

Parameter

Logic supply voltage

LCD supply voltage. See note.

Input voltage

Operating temperature range

Storage temperature range

Symbol

V

DD

max

V

DD

– V

EE

max

V

I

max

T

opr

T

stg

Ratings

–0.3 to +7.0

0 to 22

–0.3 to V

DD

+ 0.3

–20 to +85

–40 to +125

Unit

V

°C

Note

V

DD

≥

V

1

> V

2

>V

5

> V

EE

No. 6159—4/8

LC7942YC

Allowable Operating Ranges

at Ta = –20 to +85 °C, V

SS

= 0 V

Ratings

Parameter

Logic supply voltage

LCD supply voltage

DIO1, DIO64, CP, M, RS/LS and

DISPOFF HIGH–level input voltage

DIO1, DIO64, CP, M, RS/LS and

DISPOFF LOW–level input voltage

CP shift clock frequency

CP pulsewidth

DIO1 and DIO64 to CP setup time

DIOI and DIOS4 to CP hold time

CP rise time

CP fall time

Symbol

V

DD

V

DD

– V

EE

V

IH

V

IL

f

CP

t

WC

t

SETUP

t

HOLD

t

R

t

F

See notes 1 and 2.

Conditions

min

2.7

8

0.8V

DD

typ

max

5.5

20

V

MHz

ns

Unit

–

0.2V

DD

1

–

125

l00

–

50

–

Notes

1. V

DD

≥

V

1

> V

2

> V

5

> V

EE

2. At turn ON, the LCD supply should be energized after or simultaneously with the logic supply. At turn OFF, the logic supply

should be cut after or simultaneously with the LCD supply.

Electrical Characteristics

at Ta = 25 ± 2 C, V

SS

= 0 V, V

DD

= 2.7 to 5.5 V

Ratings

Parameter

DIO1, DIO64, CP, M, RS/LS and

DISPOFF HIGH–level input current

DIO1, DIO64, CP, M, RS/LS and

DISPOFF LOW–level input current

DIO1 and DIO64 HIGH–level output

voltage

DIO1 and DIO64 LOW–level output

voltage

O1 to O64 driver ON resistance

Symbol

I

IH

I

IL

V

OH

V

OL

V

IN

= V

DD

V

IN

= V

SS

I

OH

= –400 µA

I

OL

= 400 µA

V

DD

– V

EE

= 18 V,

V

DD

– V

OL

= 0.25 V,

V

DD

= 4.5 V

V

DD

– V

EE

= 18 V,

CP = V

DD

f

CP

= 1 MHz

Conditions

min

typ

max

1

µA

V

Unit

–

1

V

DD

– 0.4

–

5

–

0.4

–

R

ON

1.5

kΩ

V

DD

static supply current

CP input capacitance

I

DD

C

I

100

µA

pF

–

Note

V

DE

= V

1

or V

2

or V

5

or V

EE

, V

l

= V

DD

, V

2

= 10/11

×

(V

DD

–

V

EE

), V

5

= l/11

×

(V

DD

–

V

EE

)

No. 6159—5/8

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