AZ DISPLAYS, INC.
COMPLETE LCD SOLUTIONS
SPECIFICATIONS FOR
LIQUID CRYSTAL DISPLAY
PART NUMBER: ACM 2004D SERIES
DATE: August 9, 1999
ACM2004D SERIES LCD MODULE
AZ DISPLAYS, INC. 09/17/99 1
1.0 MECHANICAL SPECS
1. Overall Module Size 98.0mm(W) x 60.0mm(H) x max 14.0mm(D) for LED backlight
version
98.0mm(W) x 60.0mm(H) x max 9.5mm(D) for reflective version
2. Dot Size 0.55mm(W) x 0.55mm(H)
3. Dot Pitch 0.60mm(W) x 0.60mm(H)
4. Duty 1/16
5. Controller IC KS0066
6. LC Fluid Options TN, STN
7. Polarizer Options Reflective, Transflective, Transmissive
8. Backlight Options LED
9. Temperature Range Options Standard(0ºC ~ 50ºC), Wide(-20ºC ~ 70ºC)
2.0 ABSOLUTE MAXIMUM RATINGS
Item Symbol Min Typ Max Unit
Operating temperature (Standard) Top 0-50 ºC
Storage temperature (Standard) Tst -10 -60 ºC
Operating temperature (Wide temperature) Top -20 -70 ºC
Storage temperature (Wide temperature) Tst -30 -80 ºC
Input voltage Vin Vss Vdd V
Supply voltage for logic Vdd- Vss 2.7 -5.5 V
Supply voltage for LCD drive Vdd- Vo 3.0 4.6 6.5 V
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3.0 ELECTRICAL CHARACTERISTICS
Item Symbol Condition Min Typ Max Unit
Input voltage (high) Vih H level 2.2 -Vdd V
Input voltage (low) Vil L level 0-0.6 V
0ºC -4.8 5.4
25ºC 4.2 4.6 -
Recommended LC Driving
Voltage (Standard Temp) Vdd - Vo
50ºC 3.9 4.3 -
V
-20ºC -6.4 7.2
0ºC -4.8 -
50ºC -4.3 -
Recommended LC Driving
Voltage (Wide Temp) Vdd -Vo
70ºC 3.7 4.2 -
V
Power Supply Current Idd Vdd=5.0V,
fosc=270kHz -0.5 1.0 mA
LED Power Supply Voltage Vfled R=6.8Ω-4.6 5.0 V
LED Power Supply Current Ifled R=6.8Ω-240 480 mA
4.0 OPTICAL CHARACTERISTICS (Ta=25ºC, Vdd= 5.0V±0.25V, TN LC fluid)
Item Symbol Condition Min Typ Max Unit
Viewing angle (horizontal) θCr ≥ 4.0 -25 - - deg
Viewing angle (vertical) φCr ≥ 4.0 -30 -30 deg
Contrast Ratio Cr φ=0°, θ=0°-2-
Response time (rise) Tr φ=0°, θ=0°-120 150 ms
Response time (fall) Tf φ=0°, θ=0°-120 150 ms
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4.1 OPTICAL CHARACTERISTICS (Ta=25ºC, Vdd= 5.0V±0.25V, STN LC fluid)
Item Symbol Condition Min Typ Max Unit
Viewing angle (horizontal) θCr ≥ 2.0 -60 -35 deg
Viewing angle (vertical) φCr ≥ 2.0 -40 -40 deg
Contrast Ratio Cr φ=0°, θ=0°-6-
Response time (rise) Tr φ=0°, θ=0°-150 250 ms
Response time (fall) Tf φ=0°, θ=0°-150 250 ms
5.0 BLOCK DIAGRAM
LCD 20X4
U2
U1
SEG1- 40 SEG41- 120
SEG 1 SEG200
COM 16
8
LED BACKLIGHT
1. Vss
2. Vdd
3. Vo
4. RS
5. R/W
6. E
7. DB0
14. DB7
~
+ BL+
- BL-
U3
SEG121-200
40 80 80
16 COM 1
COM16
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6.0 PIN ASSIGNMENT 7.0 POWER SUPPLY
Pin No. Symbol Function
1Vss Ground
2Vdd +5V
3Vo LCD contrast adjust
4RS Register select
5R/W Read / write
6EEnable
7DB0 Data bit 0
8DB1 Data bit 1
9DB2 Data bit 2
10 DB3 Data bit 3
11 DB4 Data bit 4
12 DB5 Data bit 5
13 DB6 Data bit 6
14 DB7 Data bit 7
+BL+ Power Supply for BL+
-BL- Power Supply for BL-
8.0 TIMING CHARACTERISTICS
Item Symbol Test Condition Min. Typ. Max. Unit
Enable cycle time tCFig. a, Fig. b 500 - - ns
Enable pulse width tWFig. a, Fig. b 220 - - ns
Enable rise/fall time tR , tFFig. a, Fig. b - - 25 ns
RS, R/W set up time tSU Fig. a, Fig. b 40 - - ns
RS, R/W hold time tHFig. a, Fig. b 10 - - ns
Data delay time tDFig. b - - 120 ns
Data set up time tDSU Fig. a 60 - - ns
Data hold time tDH Fig. a, Fig. b 20 - - ns
Vss
Vo
Vdd
Vr +5V
STANDARD TEMP RANGE
Vss
Vo
Vdd
Vr +5V
WIDE TEMP RANGE
-5V
Vr = 10KΩ ~ 20KΩ
ACM2004D SERIES LCD MODULE
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VIH1
VIL1
VIL1
IH1
IL1V
VVIH1
VIL1
VIL1
VIH1
IL1V
VIH1
IL1V
Valid Data
tSU tH
tWtH
tF
tRtDSU tDH
tC
RS
R/W
E
DB0~DB7
VIL1
VIH1
VIL1
Fig. a Interface timing (data write)
VIH1
VIL1
VIH1
IH1
IL1V
VVIH1
VIL1
VIH1
VIH1
IL1V
VIH1
IL1V
Valid Data
tSU tH
tWtH
tF
tRtDSU tDH
tC
RS
R/W
E
DB0~DB7
VIL1
tD
VIH1
IL1
V
Fig. b Interface timing (data read)
ACM2004D SERIES LCD MODULE
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9.0 MECHANICAL DIAGRAM
ACM2004D SERIES LCD MODULE
AZ DISPLAYS, INC. 09/17/99 7
10.0 RELIABILITY TEST
Evaluations and Assessment*
Storage Condition Content Current
Consumption Oozing Contrast Other Appearances
Operation at high
temperature and
humidity
40ºC,90%
RH,240hrs Twice initial
value or less none More than 80% of
initial value No abnormality
High temperature
storage 60ºC,
240hrs Twice initial
value or less none More than 80% of
initial value No abnormality
Low temperature
storage -20ºC,
240hrs Twice initial
value or less More than 80% of
initial value No abnormality
*Evaluations and assessment to be made two hours after returning to room temperature (25ºC±5ºC).
*The LCDs subjected to the test must not have dew condensation.
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11.0 DISPLAY INSTRUCTION TABLE
COMMAND R
SR/
WDB
7DB
6DB
5DB
4DB
3DB
2DB
1DB
0DESCRIPTION Executing
time
fosc=250khz
Clear
Display
000
0000001Clears Display & Returns to Address 0. 1.64ms
Cursor at
Home
0
0 0
0 0 0 0 0 1 xReturns Cursor to Address 0. Also
returns the display being shifted to the
original position. DDRAM contents
remain unchanged.
1.64ms
Entry Mode
Set
0 0
0
0 0 0 0 1 I/D SI/D: Set Cursor Moving Direction
I/D=1: Increment
I/D=0: Decrement
S: Specify Shift of Display
S=1: The display is shifted
S=0: The display is not shifted
40µs
Display
ON/OFF
Control
0 0 0 0 0 0 1 DCBDisplay D=1: Display on
D=0: Display off
Cursor C=1: Cursor on
C=0: Cursor off
Brink B=1: Brink on
B=0: Brink off
40µs
Cursor /
Display
Shift
0 0
0001 S/C R/L x x Moves cursor or shifts the display w/o
changing DD RAM contents
S/C=0: Cursor Shift (RAM unchanged)
S/C=1: Display Shift (RAM unchanged)
R/L=1: Shift to the Right
R/L=0: Shift to the Left
40µs
Function
Set
00001DL NFxxSets data bus length (DL), # of display
lines (N), and character fonts (F).
DL=1: 8 bits F=0: 5x7 dots
DL=0: 4 bits F=1: 5x10 dots
N=0: 1 line display
N=1: 2 lines display
40µs
Set CG RAM
Address 0001Character Generator (CG) RAM
Address Sets CG RAM address. CG RAM data is
sent and received after this instruction. 40µs
Set DD
RAM
Address
001Display Data (DD) RAM Address /
Cursor Address Sets DD RAM address. DD Ram data
is sent and received after this
instruction.
40µs
Busy Flag /
Address Read
0
1B
FAddress counter used for both DD &
CG RAM address Reads Busy Flag (BF) and address
counter contents. 40µs
Write Data 1
0Write Data Writes data into DDRAM or CGRAM. 46µs
Read Data
1 1 Read Data Reads data from DDRAM or CGRAM. 46µs
x: Don't Care.
ACM2004D SERIES LCD MODULE
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12.0 STANDARD CHARACTER PATTERNS
Note: The character generator RAM is the RAM with which the user can rewrite character patterns by program.
