Sanyo LC7941YD Specifications

Ordering number: EN 6158

CMOS IC

LC7940YD,7941YD

Dot-matrix LCD Drivers

Overview

The LC7940YD and LC7941YD are segment driver ICs
for driving large, dot–matrix LCD displays. They read 4
bit parallel or serial input, display data from a controller
into an 80–bit latch, and then generate LCD drive signals
corresponding to that data.

The LC7940YD and LC7941YD feature mirror–image pin
assignments, allowing them to be used together to increase
component density. They are designed to be used with the
LC7942YD common driver to drive large LCD panels.

Features

• 80 built–in LCD display drive circuits

• 1/8 to l/128display duty cycle

• Serial or 4–bit parallel data input

• Chip disable for low power dissipation for large–sized
panels

• Bias supply voltags can be supplied externally

• Operating supply voltage and ambient temperature

- 2.7 to 5.5 V logic supply ( VDD) at Ta = –20 to +85°C

- 8 to 20V LCD supply (VDD – VEE ) at Ta = –20 to

+85 °C

• CMOS process

• 100–pin flat plastic package

Package Dimensions

unit: mm

–

3180–QIP100D

0.65

80

81

100

130

17.2

0.575

0.825

0.65

14.0

1.6

[LC7940YD, LC7941YD]

23.2

20.0

0.3

21.6

SANYO : QFP100D (QIP100D)

1.6

51

50

31

2.45max

0.8

0.15

2.15

15.6

0.8

Specifications

Absolute Maximum Ratings at Ta = 25 ± 2°C, V

Parameter Symbol Ratings Unit

Logic supply voltge VDD max –0.3 to +7.0
LCD supply voltage, See Note below. VDD – VEE max 0 to 22
Input voltage VI max –0.3 to VDD + 03

■ 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.

SS

= 0 V

SANYO Electric Co., Ltd. Semiconductor Company

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

V
V
V

63099RM (ID) No. 6158—1/11

Parameter Symbol Ratings Unit

Operating temperature range
Storage temperature range

Note

V

≥ V1> V3 > V4 > V

DD

EE

LC7940YD, LC7941YD

T

opr

T

stg

–20 to +85

–40 to +125

°C
°C

Recommended Operating Condltions at Ta =

Parameter Symbol Conditions

Logic supply voltage V
LCD supply voltage VDD – V

HIGH–level input voltage V

LOW–level inpvt voltage V

CP shift clock frequency f
CP pulsewidth t
LOAD pulsewidth t
DIn and SDI to CP setup time t
DIn and SDI to CP hold time t

CP to LOAD time

LOAD to CP time t
CP rise time t
CP fall time t
LOAD rise time t
LOAD fall time t

DD

IH

IL

CP
WC
WL

SETUP

HOLD

t

CL1

t

CL2

LC

R

F
RL
FL

EE

See Notes 1 and 2. 8 – 20
CP, CDl, DI1 to DI3, M,

SDl, P/S, DISPOFF and
LOAD

CP, CDI, Dl1 to DI3, M,
SDl, P/S,DISPOFF and
LOAD

–

20 to + 85°C, V

= 0V

SS

Ratings

min typ max

2.7 – 5.5

Unit

V
V

0.8V

DD

– – 0.2V

100––
100––

80––
80––

0––
100––
100––

––50

––50

––50

––50

––

DD

–3.3

V

V

MHz

ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns

Notes

1. V

≥ Vl > V3 > V4 > V

DD

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.

Electrlcai Characterfstlcs at Ta = 25 ± 2°C,V

Parameter Symbol Conditions

HIGH–level input current I

LOW–level input current I

CDO HIGH–level output voltage V
CDO LOW–levef output voltage V

O1 to O80 driver ON resistance RON

IH

IL

OH

OL

= 0V, VDD = 2.7 to 5.5 V

SS

Ratings

min typ max

VIN =VDD; LOAD, CP, CDI,
P/S, DI1 to DI3, SDl, M,

––1

and DISPOFF
VIN = VSS; LOAD, CP, CDl,

P/S, DI1 to DI3, SDI, M,

–––1

and DISPOFF
IOH = –400 µA VDD – 0.4 – –
IOL = 400 µA – – 0.4
VDD – VEE = 18 V,

|VDE – VO|= 0.25 V.

–24

See note

Unit

µA

µA

V
V

kΩ

No. 6158—2/11

LC7940YD, LC7941YD

Parameter Symbol Conditions

CDI = VDD,

VDD to VSS standby supply current I

ST

VDD – VEE = 18 V,
fCP = 3.3 MHz,
no output load ; V

SS

VDD – VEE = 18 V,

VDD to VSS operating supply current I

SS

fCP = 3.3 MHz,
I

= 5.156 kHz,

LOAD

fM = 52 Hz ;VSS
VDD – VEE = 18V,

VDD to VEE operating supply current I

CP input capacitance C

EE

I

fCP = 3.3 MHz,
f

= 5,156 kHz,

LOAD

= 52 Hz ; V

f

M

EE

fCP = 3.3 MHz ; CP – 5 –

Note

V

= V1 or V3, or V4 or VEE, V1 = VDD, V3 = 9/11 × (VDD – VEE), V4 = 2/11 × (VDD – VEE)

DD

Switching Characteristics at Ta = 25 ± 2°C,V

Parameter Symbol Conditions

CDO output delay time t

D

= 0 V, VDD = 2.7 to 5.5 V

SS

CL = 30 pF – – 200

Ratings

min typ max

– – 200

––1.0

––0.1

Ratings

min typ max

Unit

µA

mA

mA

pF

Unit

ns

Switching Characteristics Waveform

t

t

CP

SDI
DI1 to 3

LOAD

CDO

WC

R

t

SET

t

CL (1)

UP

t

t

t

RL

WC

F

t

HOLD

t

CL (2)

t

WL

t

D

t

FL

0.8V

DD

0.2VDD

t

LC

t

D

No. 6158—3/11

Pad Layout (Top view)

080

079

078

077

076

075

LC7940YD, LC7941YD

074

073

072

071

070

069

068

067

066

065

064

063

062

061

060

059

058

057

056

055

054

053

052

051

NC

CDO

NC

DISP OFF

P/S

V
VEE

V4

V3
NC
V

V1

DI1
DI2
DI3

SDI

LOAD

CDI

CP

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

81
82
83
84
85
86

SS

87
88
89
90
91

DD

92
93

M

94
95
96
97
98
99
100

123456789101112131415161718192021222324252627282930

010203040506070809

LC7940YD

010

011

012

013

014

015

016

017

018

019

020

021

022

023

024

025

026

027

028

029

50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31

030

050
049
048
047
046
045
044
043
042
041
040
039
038
037
036
035
034
033
032
031

CP

CDI

LOAD

SDI

DI3
DI2
DI1

V1

V

NC

V3

V4

V
VSS

P/S

DISP OFF

NC

CDO

NC

010203040506070809

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

81
82
83
84
85
86
87
88

M

89
90

DD

91
92
93
94

EE

95
96
97
98
99
100

123456789101112131415161718192021222324252627282930

080

079

078

077

076

075

074

073

072

010

011

012

013

LC7941YD

071

070

069

068

014

067

015

066

016

065

017

064

018

063

019

062

020

061

021

060

022

059

023

058

024

057

025

056

026

055

027

054

028

053

029

052

030

50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31

051

031
032
033
034
035
036
037
038
039
040
041
042
043
044
045
046
047
048
049
050

No. 6158—4/11