LM3056A256G128DNY - Densitron Corporation

REVISIONS

REV. DESCRIPTION DATE APPROVED

The information disclosed herein was originated

by and is the property of Densitron International.

Densitron International reserves all patent,

proprietary, design, use, sales, manufacturing and

reproduction rights thereto.

APPROVALS DATE

DRAWN

CHECKED

ISSUED

Unless otherwise

specified:

Dimensions are mm

Tolerances are:

X = ± 3

.X = ± 0.5

.XX = ± 0.05

FSCM NO. 62483

DENSITRON INTERNATIONAL PLC.

TITLE

SHEET 1 OF

DWG. NO. LM3056

128 X 256 GRAPHICS LCD MODULE

RELEASED ON ECN #E0750

7/28/98

1. Specification subject to change without notice.

2. All dimensions and specifications apply to standard modules. This information may vary for modules with optional

features.

3. All dimensions are in millimeters.

4. Precautions:These precautions apply equally to modules from all makers, not just Densitron. Violation of these

guidelines may void the warranty and can cause problems ranging from erratic operation to catastrophic display

failure.

Handling precautions:

♦ This device is susceptible to Electro-Static Discharge (ESD) damage. Observe Anti-Static precautions.

Power supply precautions:

♦ Identify and, at all times, observe absolute maximum ratings for both logic and LC drivers. Note that there is some

variance between models.

♦ Prevent the application of reverse polarity to VDD and VSS, however briefly.

♦ Use a clean power source free from transients. Power up conditions are occasionally “jolting” and may exceed the

maximum ratings of the module.

♦ The +5V power of the module should also supply the power to all devices which may access the display. Don’t

allow the data bus to be driven when the logic supply to the module is turned off.

♦ DO NOT install a capacitor between the VO (contrast) pin and ground. VDD must, at all times, exceed the VO

voltage level. The capacitor combines with the contrast potentiometer to form an R-C network which “holds-up” VO,

at power-down, possibly damaging the module.

Operating precautions:

♦ DO NOT plug or unplug the module when the system is powered up.

♦ Minimize the cable length between the module and host MPU. (Recommended max. length 30 cm).

♦ For models with EL or CCFL backlights, do not disable the backlight by interrupting the HV line. Unloaded inverters

produce voltage extremes which may arc within a cable or at the display.

♦ Operate the module within the limits of the modules temperature specifications.

Mechanical / Environmental precautions:

♦ Improper soldering is the major cause of module difficulty. Use of flux cleaner is not recommended as they may

seep under the elastomeric connection and cause display failure. Densitron recommends the use of Kester “245”

no-clean solder.

♦ Mount the module so that it is free from torque and mechanical stress.

♦ Surface of LCD panel should not be touched or scratched. The display front surface is an easily scratched, plastic

polarizer. Avoid contact and clean only when necessary with soft, absorbent cotton dampened with petroleum

benzene.

♦ ALWAYS employ anti-static procedure while handling the module.

♦ Prevent moisture build-up upon the module and observe the environmental constraints for storage temperature and

humidity.

♦ DO NOT store in direct sunlight.

♦ If leakage of the liquid crystal material should occur, avoid contact with this material, particularly ingestion. If the

body or clothing becomes contaminated by the liquid crystal material, wash thoroughly with water and soap.

Notes: (unless otherwise specified)

SHEET OF

DWG. NO. LM3056 REV. -

1.0 DESCRIPTION

Dot matrix display module consisting of liquid crystal display, CMOS driver and.

Available LC fluid type is: NTN (supertwisted nematic), FSTN (film supertwisted nematic).

Other options include EL backlighting, and, grey or yellow mode STN.

2.0 MECHANICAL CHARACTERISTICS

Item Specifications Unit

Package Dimensions 200.0 (W) x 110.0 (H) x 12.0 max (D) mm

Display format 256 dots (W) x 128 dots (H) -

Driving method 1/64 duty

Dot size 0.43 (W) x 0.43 (H) mm

Dot pitch 0.48 (W) x 0.48 (H) mm

Viewing area 128.0 (W) x 66.5 (H) mm

Weight 220.0 g

Notes:W-Width;H-Height;D-Depth.

3.0 ABSOLUTE MAXIMUM RATINGS VSS=0V;Ta=25°C

Item Symbol NTN/ FSTN NTN-H/ FSTN-H UNIT

Min. Max. Min Max.

Logic supply voltage VDD-

VSS 0 7 0 7 V

LC driver supply voltage VDD-VO0 25 0 25 V

Operating temperature

Storage temperature (Note 1) TOP

TST 0

-20 +50

+70 -20

-30 +70 (Note 3)

+80 °C

Humidity: Operating (@40°C)

Non-operating

(@40°C)

-85%

95% -

-85%

95% RH (Note 2)

RH (Note 2)

Notes: 1: Tested to 100 hrs.

2: Refers to non-condensing conditions.

3. It is not recommended to operate CCF lamp below 0°C.

4.0 ELECTRICAL CHARACTERISTICS VDD=5±0.25V;Ta=25°C

Item Symbol Test Condition Min. Typ. Max. Unit

Input “High” voltage VIH -2.2 -VDD V

Input “Low” voltage VIL -- - 0.8VDD V

Output “High” voltage VOH IOH=0.205mA - - - V

Output “Low” voltage VOL IOL=1.2mA - - - V

Power supply current IEE VEE=-15V -2.3 -mA

Power supply current IDD VDD=5.0V -5.2 -mA

7.0 POWER SUPPLY

+5VV

D+5V

NTN NTNwithon-boardnegative

voltage generator

+5V

NTNwithtemperature

compensation

D+5V

NTNwithon-boardnegativevoltage

generatorandtemperaturecompensation

V=10K-20KohmR

SHEET 3 OF 8

DWG. NO. LM3056 REV.-

5.0 RECOMMENDED LC DRIVE VOLTAGE (VDD-VO)VDD=5.0±0.25V

Temperature NTN NTN-H FSTN FSTN-H

Ta= -20°C -24.3 -19.6

Ta= 0°C 21.0 21.0 18.3 18.3

Ta= 25°C 18.5 18.5 17.3 17.3

Ta= 50°C 16.8 16.8 16.0 16.0

Ta= 70°C -15.7 -15.0

6.0 BACKLIGHT SPECIFICATIONS: Ta=20°C,60%RH,Darkroom.

Item Symbol Typ. Max. Unit

EL lamp input voltage VEL 100 150 Vrms

ELinput current IEL 5.0 6.0 mA

Life to half initial brightness -10000 15000 Hours

EL lamp input frequency FEL 25 60 KHz

Recommended backlight inverter -DAS5V100 - -

SHEET OF

DWG. NO. LM3056 REV. -

8.0 INTERFACE DESCRIPTION

Pin No. Symbol I/O Function

1D1 IDisplay data H…Dot on, L… Dot off

2FLM IFirst Line Marker indicates the beginning of each display cycle

3MIControl signal for A.C. drive

4CL1IThe CL1 latches the serial data in the shift registers

5CL2IClock signal for shifting serial data

6D2IDisplay data H…Dot on, L…Dot off

7VDD -Logic Supply Voltage (+5V)

8VSS -Ground (0V)

9Vee -Power supply for LC driving (-12V)

10 Vo -Operating voltage for LC drivers

9.0 BLOCK DIAGRAM:

IC(8)

IC(7)

IC(6)

IC(5)

IC(1)

IC(2)

IC(3)

IC(4)

Item Symbol Min. Typ. Max. Unit

Max Clock Frequency fcp 3.3 - - MHz

Clock Pulse Width tw(CP) 125 - - nS

LOAD Pulse Width tw(L) 125 - - nS

Data Set-up Time tsetup 50 - - nS

CP→LOAD time tCL 250 - - nS

LOAD→CP time tLC 0- - nS

CP Rise/Fall time tr(CP)1 tf(CP) - - 50 nS

LOAD Rise/Fall time tr(L)1 tf(L)) - - 1µs

Data Hold time thold 50 - - ns

Item Symbol Min. Typ. Max. Unit

Max Clock Frequency fcp 3.3 - - MHz

Clock Pulse Width tw(CP) 125 - - nS

LOAD Pulse Width tw(L) 125 - - nS

Data Set-up Time tsetup 50 - - nS

CP→LOAD time tCL 250 - - nS

LOAD→CP time tLC 0- - nS

CP Rise/Fall time tr(CP)1 tf(CP) - - 50 nS

LOAD Rise/Fall time tr(L)1 tf(L)) - - 1µs

Data Hold time thold 50 - - ns

SHEET 5 OF 8

DWG. NO. LM3056 REV. -

10.0 TIMING CHARACTERISTICS

Item Symbol Min. Typ. Max. Unit

Max Clock Frequency fcp 3.3 - - MHz

Clock Pulse Width tw(CP) 125 - - nS

LOAD Pulse Width tw(L) 125 - - nS

Data Set-up Time tsetup 50 - - nS

CP→LOAD time tCL 250 - - nS

LOAD→CP time tLC 0- - nS

CP Rise/Fall time tr(CP)1 tf(CP) - - 50 nS

LOAD Rise/Fall time tr(L)1 tf(L)) - - 1µs

Data Hold time thold 50 - - ns

11.0 VOLTAGE SEQUENCING

Always observe the following power supply ON/OFF sequence. Failure to so may cause latch up of

CMOS LSI circuits or DC induced damage to LC panel.

(CL1)

(D1)

(CL2)

W(L)

SHEET OF

DWG. NO. LM3056 REV. -

12.0 OPTICAL CHARACTERISTICS

Item Symbol Test Condition Min. Typ. Max. Unit

Contrast ratio KØ=20° θ=0° 2.5 - - -

Viewing angle Ø2-Ø1

θθ=0° K>1.4

Ø=20° K=1.4 20

±30 -

-Deg.

Deg.

Response time Rise

Fall tr

tfØ=20° θ=0°

Ø=20° θ=0° -

-150

150 250

250 mS

1.4

Ø1 Ø2

NTN, NTN-H: Ø1 < 0° < Ø2

TN, TN-H: Ø1 < 20° < Ø2

Viewing angle

Contrast ratio

Brightness

Driving voltage

Selected dot

Non-selected

dot

XX'

Ø2

Ø1

Brightness of non-selected dots

Brightness of selected dots

K =

DEFINITION OF CONTRAST RATIO (K) CONTRAST VERSUS VIEWING ANGLE

DEFINITION OF ANGLES Ø AND

100%

90%

10%

tr tf

Brightness

Selected Non-selected

Non-selected

DEFINITION OF OPTICAL RESPONSE

θθ

SHEET OF

DWG. NO. LM3056 REV. -

14.0 PART NUMBER DESCRIPTION FOR AVAILABLE OPTIONS

LM3056••‚‚256G128ƒƒ„„……

•• POLARIZER TYPE

A = Reflective: light background, non backlit

B = Transflective: light background, backlit

‚‚ NOT APPLICABLE - LEAVE BLANK

ƒƒ FLUID TYPE AND POWER SUPPLY

D = NTN with +5VDC and external negative voltage operation

H = NTN extended temp. with +5VDC and external negative voltage operation

„„ FLUID TYPE

N = NTN

F = FSTN (Film Supertwisted Nematic)

…… COLOR FOR NTN FLUID

G = Gray (reflective and transflective)

y = Yellow background (reflective and transflective)