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 millimetres.
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 power supply rail of the module should also supply the power to all devices that 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.
♦=Minimise the cable length between the module and host MPU. (Recommended max. length 30 cm).
♦=For models with EL backlights, do not disable the backlight by interrupting the HV line. Unloaded inverters produce
voltage extremes that 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
polariser. 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)
DWG.NO. LM4736
TITLE 160 x 160 Graphic Array LCD with Controller
DENSITRON EUROPE LTD
BIGGIN HILL
,
ENGLAND
DATE
ISSUED
CHECKED
DRAWN
APPROVALS
Unless otherwise
specified:
Dimensions are mm
Tolerances are:
X = ± 3
0.X = ± 0.5
0.XX = ± 0.05 SHEET 1 of 12
These drawings and specifications are the
p
roperty of Densitron International and ma
y
not be reproduced, copied or used without
written permission
REVISIONS
DESCRIPTION
REV.
APPROVED
DATE
1. DESCRIPTION
STN graphic matrix display module consisting of a Liquid Crystal Display with 160 x 160 resolution, CMOS driver and controller
LSI, on-board 32K frame buffer RAM, printed circuit board with FFC connection and optional edgelit Light Emitting Diode
(LED) backlight.
Controller features include: text mode, graphics mode and combined text/graphics mode; programmable cursor control; smooth
horizontal/vertical scrolling for all or part of the display; internal CGROM (160 characters in 5x7 pixel format), 8-bit parallel 6800
or 8080 MPU family interface (hardware set); 2.7V to 5.5V operating voltage for LSI.
Available LC fluid types are: STN (supertwisted nematic) grey, FSTN (film compensated STN).
2. MECHANICAL CHARACTERISTICS
Item Specifications Unit
Outer Dimensions 74.5 (W) x 70.5 (H) x 8/10.2 MAX mm
Display format 160 x 160 dot -
Character font format Defined by on-board controller (SED1335F) dots
Driving method 1/160 duty
Dot size 0.3 x 0.3 mm
Dot pitch 0.33 x 0.33 mm
Character Size - mm
Active display area 52.77 x 52.77 mm
Viewing area 58.0 x 58.0 mm
Weight 53 approx. g
Notes: W-Width; H-Height; D-Depth.
3. ABSOLUTE MAXIMUM RATINGS
VSS=0V;Ta=25°C
STN, FSTN
Item Symbol
Min
Max
Unit
Logic supply voltage VDD-VSS 0 6
LC supply voltage for contrast adjustment VO-VSS 0 24
LC driver supply voltage VEE-VSS 0
Logic input voltage Vin 0 VDD
V
Operating temperature
Storage temperature (Note 1)
TOP
TST
-20
-30
+70
+80
°C
Humidity: Operating (@40°C)
Non-operating (@40°C)
-
-
-
-
85%
95% RH (Note 2)
Notes: 1: Tested to 100 hrs.
2: Refers to non-condensing conditions.
4. RECOMMENDED LC DRIVE VOLTAGE (Vo-Vss)
Temperature STN STN-H FSTN FSTN-H
Ta= -20°C N/A 18.6 N/A 20.6
Ta= 0°C N/A 17.7 N/A 18.0
Ta= 25°C N/A 17.0 N/A 16.5
Ta= 50°C N/A 16.2 N/A 15.6
Ta=70°C N/A 15.1 N/A 14.7
DWG.NO. LM4736 SHEET 2 of 12
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5. BACKLIGHT SPECIFICATIONS Ta=20°C,60%RH,Darkroom.
Item Symbol Typ. Max. Unit
Supply Voltage VLED 3.0/5.0 - V
Nominal current IF 100 - mA
Internal current limiting resistor R1 N/A N/A Ω
External current limiting resistor (recommended), Vdd= 3V R2 10 (0.25W) - Ω
External current limiting resistor (recommended), Vdd= 5V R2 30 (1W) - Ω
Number of nodes N 10 -
R R
I
LED
V
LED+
V
LED-
1
N
6. ELECTRICAL CHARACTERISTICS
Specification value
Item
Symbol
Condition Min Typ Max
Unit
Operating voltage VDD 2.7 3~5 5.5
High level input voltage
Low level input voltage
VIHC
VILC
0.5 VDD
VSS
-
-
VDD
0.2 VDD
High level output voltage
Low level output voltage
VOHC
VOLC 2.4
-
-
-
-
VSS +0.4
V
Input leakage current
Output leakage current
ILI
ILO VI = VDD
VI = VSS
-
-
0.05
0.1
2.0
5.0 µA
Static current consumption (with backlight switched off) ISSQ 4.5 mA
Dynamic current consumption (with backlight switched off) IDD VDD = 5V, Ta=25°C 11 mA
7. INTERFACE DESCRIPTION
Pin No. Symbol I/O Function
1 VSS - Power supply ground
2 VDD - Power supply for logic
3 Vo - LC drive voltage for contrast adjustment
4 /RD (E) I
Read (8080 series MPU)
Enable clock (6800 series MPU)
5 /WR (R/W) I
Write (8080 series MPU)
Read/Write (6800 series MPU)
6 A0 I
Control/display data flag input. This is connected to the LSB of the
MPU address bus
•=When LOW, the data on D0 to D7 is command data
•=When HIGH, the data on D0 to D7 is display data
7 D0 I/O
8 D1 I/O
9 D2 I/O
10 D3 I/O
11 D4 I/O
12 D5 I/O
13 D6 I/O
14 D7 I/O
Data bus
15 /CS I Chip select
16 /RST I Reset
17 Vee - LC drive voltage
18 FG - Frame ground
19 LED+ - Backlight power supply (anode)
20 LED- - Backlight power supply (cathode)
Note: type of parallel interface is determined by hardware settings at the factory and must be specified when ordering. See Section
12.0 ‘PART NUMBER DESCRIPTION FOR AVAILABLE OPTIONS’.
DWG.NO. LM4736 SHEET 3 of 12
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8. BLOCK DIAGRAM (8080 MPU example)
9. ELECTRO-OPTICAL CHARACTERISTICS
Item Symbol Test Condition Min. Typ. Max. Unit
Ø2- Ø1 Ø = 0°, Ka ≥ 2
θ = 0°, Ka ≥ 1.4
20
40
Viewing angle
θ Ka ≥2, θ = 20°
Ka ≥1.4, θ = 20°
±10
±30
Contrast ratio K Ø = 0°, Ka ≥ 2
θ = 0°, Ka ≥ 1.4
5
3
Deg.
Response time Rise
Fall
tr
tf
Ø=0° θ=0°
Ø=0° θ=0°
250
250
350
360
mS
DWG.NO. LM4736 SHEET 4 of 12
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10. INTERFACE TIMING CHARACTERISTICS
8080-series MPU
VDD = 4.5 to 5.5 V VDD = 2.7 to 4.5 V
Signal Symbol Parameter min max min max
Unit Condition
tAH8 Address hold time 10 - 10 -
A0, /CS tAW8 Address setup time 0 - 0 -
tCYC8 System cycle time See note - See note -
/WR, /RD tCC Strobe pulsewidth 120 - 150 -
tDS8 Data setup time 120 - 120 -
tDH8 Data hold time 5 - 5 -
tACC8 /RD access time - 50 - 80
D0 ~ D7
tOH8 Output disable time 10 50 10 55
ns CL=100pF
Note: for detailed description of system cycle time variations refer to Seiko-Epson technical manual for
SED1335 controller.
Vcc
A0
A1
-
A7
/IORQ
D0~D7
/RD
/WR
GND /RES
A0 Vdd
D0~D7
/RD
/WR
/RES
Vss
Decoder
RESET
Vdd
Vss
MPU
SED1335
/CS
DWG.NO. LM4736 SHEET 5 of 12
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6800-series MPU
VDD = 4.5 to 5.5 V VDD = 2.7 to 4.5 V
Signal Symbol Parameter min max min max
Unit Condition
tCYC6 System cycle time See note - See note -
tAW6 Address setup time 0 - 10 -
A0,
CS,
R/W tAH6 Address hold time 0 - 0 -
tDS6 Data setup time 100 - 120 -
tDH6 Data hold time 0 - 0 -
tOH6 Output disable time 10 50 10 75
D0 ~ D7
tACC6 Access time - 85 - 130
E tEW Enable pulsewidth 120 - 150 -
ns CL = 100pF
Note: for detailed description of system cycle time variations refer to Seiko-Epson technical manual for
SED1335 controller.
Vcc
A0
A1
-
A15
VMA
D0~D7
E
R/W
GND /RES
A0 Vdd
D0~D7
E
R/W
/RES
Vss
Decoder /CS
RESET
Vdd
Vss
MPU
SED1335
DWG.NO. LM4736 SHEET 6 of 12
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11. POWER SUPPLY
Vee
Vo
Vdd
Vss
+5V (+3V)
+24V
10~20k
0V
LM4736
12. INTERNAL CGROM FONT TABLE
DWG.NO. LM4736 SHEET 7 of 12
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13. DRAWING
14. APPLICATION EXAMPLE
Application code
name lcd_1335_sample_program
op0 bit rxd ;rd
op1 bit t xd ;wr
op2 bit int 0 ;a0
op3 bit int 1 ;cs
op4 bit t 0 ; rst
cseg at 0h
;--------------------------------
setb op4
mov b,#0
djnz b,$
clr op4
;
mov a, #40h
call cmdw_1335
mov a, #30h
call datw_1335
mov a, #87h
call datw_1335
mov a, #07h
call datw_1335
mov a, #19
call datw_1335
mov a, #50
call datw_1335
mov a, #159
call datw_1335
mov a, #20
call datw_1335
mov a,#0
call datw_1335
;
mov a, #44h
call cmdw_1335
mov a,#0
call datw_1335
mov a, #160
call datw_1335
mov a, #128
call datw_1335
mov a,#12
call datw_1335
mov a, #160
call datw_1335
mov a,#0
call datw_1335
mov a, #25
call datw_1335
;
mov a, #5ah ;HDOT SCR
call cmdw_1335
mov a,#0
call datw_1335
mov a, #5bh ;ovlay
call cmdw_1335
mov a,#0
call datw_1335
mov a, #5dh ;csrform
call cmdw_1335
mov a,#7
call datw_1335
mov a, #87h
call datw_1335
mov a, #4ch ;csr dir
call cmdw_1335
;
mov a, #59h ;turn on text
call cmdw_1335
mov a,#4
call datw_1335
mov a, #46h ;text hom e adr
call cmdw_1335
mov a,#0
call datw_1335
mov a,#0
call datw_1335
mov a, #42h
call cmdw_1335
;
mov a,#'D' ;display 'DENSITRON'
call datw_1335
mov a,#'E'
call datw_1335
mov a,#'N'
call datw_1335
mov a,#'S'
call datw_1335
mov a,#'I'
call datw_1335
mov a,#'T'
call datw_1335
mov a,#'R'
call datw_1335
mov a,#'O'
call datw_1335
mov a,#'N'
call datw_1335
sjmp $
;---------------------------------------
cmdw_1335:
setb op0
clr op1
setb op2
setb op3
mov p0,a
clr op3
setb op3
ret
;---------------------------------------
datw_1335:
clr op0
clr op2
setb op3
mov p0,a
clr op3
setb op3
ret
;---------------------------------------
end
DISPLAY: DENSITRON
Note: for more application examples please refer to Section 9.0 ‘Application Notes’ of the Seiko-Epson SED1335 Technical
Manual.
SHEET 9 of 12
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Application circuit
SHEET 10 of 12
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15. ENVIRINMENTAL TEST DATA
Test Item Conditions Description
1. Thermal shock test
During normal
operation
30 Min. AT -20 ºC
5 Min. AT 25 ºC
30 Min. AT 70 ºC
5 MIN. AT 25 ºC
------------------------------------------------------------------
1 CYCLE = 70 Minutes
TOTAL DURATION 5 CYCLES ( 350 Minutes)
2. Temperature/humidity
shock test
During normal
operation
Humidity: 85±5%
RH
<--------------- 1 CYCLE ---------------->
Operating MAX 0.5G
3. Vibration Non-operating MAX 2G
Operating MAX 3G
4. Shock Non-operating MAX 50G
SHEET 11 of 12
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16. PART NUMBER DESCRIPTION FOR AVAILABLE OPTIONS
LM4736
160G160
/X
Polariser type
B = transflective positive (light background, with backlight)
A = transflective positive (light background, w/o backlight)
LED Backlight Colour
G = yellow-green
Fluid type and Power Supply
H = wide operating temperature range (-20 to +70 ºC) w/o on-board Vee
generation
Fluid Type And Temperature Comp ensation
N = STN w/o temperature compensation
F = FSTN w/o temperature compensation
Background Colour
G = Gray background
Blank = FSTN (black dot on gray background)
/X Interface Type
Blank = 8080 MPU interface
/68 = 6800 MPU interface
SHEET 12 of 12
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