null  User manual
Bolymin, Inc.
◆◆◆
LCD MODULE SPECIFICATION
MODEL NO.
BC2002C series
FOR MESSRS:
________________________________________________
ON DATE OF:
________________________________________________
APPROVED BY:
________________________________________________
Bolymin, Inc.
◆◆◆
CONTENTS
1. Numbering System
2. Precautions in use of LCD Modules
3. General Specification
4. Absolute Maximum Rating
5. Electrical Characteristics
6. Optical Characteristics
7. Interface Pin Function
8. Power supply for LCD Module and LCD operating voltage adjustment
9. Backlight information
10. Quality Assurance
11. Reliability
12. Appendix (Drawing , KS0066 controller data)
12-1 Drawing
12-2 KS0066 controller data
12-2.1 Function description
12-2.2 C.G ROM table. table 2
12-2-3 Instruction table
12-2.4 Timing characteristics
12-2.5 Initializing soft ware of LCM
Bolymin, Inc.
◆◆◆
1. Numbering System
B
0
C
1
2002
2
C
3
B
4
N
5
L
6
H
7
0 Brand
Bolymin
1 Module
Type
C= character type
G= graphic type
P= TAB/TCP type
2 Format
2002=20 characters, 4
lines
12232= 122 x 32 dots
A type
3 Version
No.
4 LCD Color
5 LCD Type
6 Backlight
type/color
7 CGRAM
Font
8 View
Angle/
Operating
Temperatur
e
9 Special
Code
B
8
G=STN/gray
Y=STN/yellow-green
C=color STN
xxx
9
O= COG type
F= COF type
B=STN/blue
F=FSTN
T=TN
R=positive/reflective M=positive/transmissi
P=positive/transflective ve
N=negative/transmissi
ve
L=LED array/
D=LED edge/blue
yellow-green
E=EL/white
H=LED edge/white
B=EL/blue
R=LED array/red
C=CCFL/white
G=LED
edge/yellow-green
J=English/Japanese
C=English/Cyrillic
Font
Font
E=English/European
H=English/Hebrew
Font
Font
B=Bottom/Normal
Temperature
H=Bottom/Wide
Temperature
U=Bottom/Ultra wide
Temperature
3=3 volt logic power
supply
n=negative voltage for
LCD
c=cable/connector
xxx=to be assigned on
data sheet
T=Top/Normal
Temperature
W=Top/Wide
Temperature
C=9H/Normal
Temperature
t=temperature
compensation for LCD
p=touch panel
Bolymin, Inc.
◆◆◆
2. Precaution in use of LCD Module
(1) Avoid applying excessive shocks to the module or making any alterations or modifications
to it.
(2) Don’t make extra holes on the printed circuit board, modify its shape or change the
components of LCD module.
(3) Don’t disassemble the LCM.
(4) Don’t operate it above the absolute maximum rating.
(5) Don’t drop, bend or twist LCM.
(6) Soldering: only to the I/O terminals.
(7) Storage: please storage in anti-static electricity container and clean environment.
(8)Don’t touch the elastmer connecter, especially insert a backlight panel (EL or CCFL)
3. General Specification
(1) Mechanical Dimension
Item
Number of Characters
Module dimension
(LxWxH)
Dimension
Unit
20 characters×2 Lines
-
View area
146.0 x 43.0 x 13.4 (Max) – LED B/L
146.0 x 43.0 x 9.7(Max) – EL or No B/L
123.0×23.0
Active area
118.84 x 18.97
mm
Dot size
0.92 x 1.1
mm
Dot pitch
0.98 x 1.16
mm
Character size ( L x W )
4.84 x 9.22
mm
Character pitch ( L x W )
6.0 x 9.75
mm
(2) Controller IC: KS0066 (or Equivalent) controller
(3) Temperature Range
Operating
Storage
Normal
Wide
0 ~+50℃
-20 ~+70℃
-10 ~+60℃
-30 ~+80℃
mm
mm
Bolymin, Inc.
◆◆◆
4. Absolute Maximum Ratings
4.1 Electrical Absolute Maximum Ratings
(Vss=0V, Ta=25℃)
Item
Symbol
Min
Max
Unit
Supply Voltage (Logic)
Vdd-Vss
-0.3
7
V
Supply Voltage (LCD driver)
Vdd-Vo
-0.3
13
V
VI
Vss
Vdd
V
TOP
0
+50
℃
TSTG
-10
+60
℃
Top
-20
+70
℃
Tstg
-30
+80
℃
Input Voltage
Normal Type
Wide Temperature Type
4.2 Environmental Absolute Maximum Ratings
Operating
Storage
Item
Comment
(Min.)
Humidity
(Max.)
(Min.)
Note(2)
(Max.)
Note(2)
Without condensation
Vibration
--
4.9M/S2
--
19.6M/S2
XYZ Direction
Shock
--
29.4M/S2
--
490M/S2
XYZ Direction
Note (1) Ta = 0℃ ﹕50Hr Max.
Note (2) Ta≦40℃:90% RH MAX
Ta > 40℃:Absolute humidity must be lower than the humidity of 90% at 40℃.
Bolymin, Inc.
◆◆◆
5. Electrical Characteristics
Item
Supply Voltage For Logic
Symbol
Condition
Min
Typ
Max
Unit
Vdd-Vss
-
4.5
-
5.5
V
-
5.0
-
V
Ta=0℃
-
-
-
V
Ta=25℃
-
4.5
-
V
Ta=50℃
-
-
-
V
-
4.0
-
V
*Ta=-20℃
Supply Voltage For LCD
Vdd-Vo
*Wide Temp、Type
*Ta=+70℃
Input High Volt.
VIH
-
2.2
-
Vdd
V
Input Low Volt.
VIL
-
-
-
0.6
V
Output High Volt.
VOH
-
2.4
-
-
V
Output Low Volt.
VOL
-
-
-
0.4
V
Supply Current
Idd
Vdd=5V
-
2.3
-
mA
Bolymin, Inc.
◆◆◆
6. Optical Characteristics
a. STN
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
(V)θ
CR≧2
10
45
deg
(H)φ
CR≧2
-30
30
deg
CR
-
3
Response Time
T rise
-
100
150
ms
25℃
T fall
-
150
200
ms
Symbol
Condition
Min.
Typ.
Max.
Unit
(V)θ
CR≧3
10
60
deg
(H)φ
CR≧3
-45
45
deg
CR
-
5
Response Time
T rise
-
100
150
ms
25℃
T fall
-
150
200
ms
View Angle
Contrast Ratio
-
b. FSTN
Item
View Angle
Contrast Ratio
-
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◆◆◆
6.1
Definitions
■View Angles
■Contrast Ratio
Z
( Visual angle direction )
Brightness at selected state ( BS )
Brightness at non-selected state ( Bns )
Selected state
CR =
LCD
X
φ
Brightness (%)
θ
Non-selected state
Bs
Bns
Y
Operating voltage for LCD driving
( Best visual angle direction )
■Response Time
Selected Condition
Nonselected Condition
90 %
100 %
Brightness
Nonselected Condition
10 %
tr
Rise Time
td
Decay Time ( fall time tf )
Bolymin, Inc.
◆◆◆
7. Interface Pin Function
Pin No.
Symbol
Level
Description
1
Vss
0V
2
Vdd
5.0V
3
Vo
4
RS
H/L
H:DATA, L:Instruction code
5
R/W
H/L
H:Read(MPU→Module)L:Write(MPU→Module)
6
E
7
DB0
H/L
Data bit 0
8
DB1
H/L
Data bit 1
9
DB2
H/L
Data bit 2
10
DB3
H/L
Data bit 3
11
DB4
H/L
Data bit 4
12
DB5
H/L
Data bit 5
13
DB6
H/L
Data bit 6
14
DB7
H/L
Data bit 7
15
A
-
16
K
Ground
Supply Voltage for logic (option +3V)
(Variable) Operating voltage for LCD
H,H→L Chip enable signal
Power supply for LED backlight (+)
Power supply for LED backlight (GND)
Bolymin, Inc.
◆◆◆
8. Power Supply for LCD Module and LCD Operating Voltage a Adjustment
*Standart Type
LCM
Vdd
Vo
Vss
DC 5V
typ.: 4.5V
VR
(Recomment)
*(Option) LCM operating on " DC 3V " input with external negative voltage
LCM
Vdd
DC 3V
Vss
Vo typ.: 4.5V
VR
Negative volt
-3v
*(Option) LCM operating on " DC 3V " input with built-in negative voltage
LCD Module block diagram
Ω
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◆◆◆
9.Backlight Information
9.1 Specification
LED array / yellow-green
Parameter
Symbol
Min
Typ
Supply Current
ILED
─
300
Supply Voltage
V
-
4.2
4.3
V
Reverse Voltage
VR
-
-
8
V
Luminous Intensity
IV
15
-
-
cd/m2
ILED=300mA
Wave Length
λp
nm
ILED=300mA
Hr.
V≦4.2V
574
-
Life Time
Max
100000
Color
-
Unit
Test Condition
mA
V=4.2V
Yellow-green
9.2 Specification
LED edge/white
Parameter
Symbol
Min
Typ
Max
Supply Current
ILED
─
60
Supply Voltage
V
-
3.5
3.7
V
Reverse Voltage
VR
-
-
8
V
IV
15
-
-
cd/m2
ILED=60mA
nm
ILED=60mA
Hr.
V≦3.6V
Luminous Intensity
Unit
Test Condition
mA
V=3.6V
(Note1)
Wave Length
λp
Life Time
Color
Note1: measure on LCD surface
-
20000
-
White
Bolymin, Inc.
◆◆◆
9.2 Backlight driving methods
a. LED B/L drive from pin15 (LED+) pin16 (LED-)
a.1 array / yellow-green
LCM
++15
RL=0 Ω
(recommending)
RL= 2.2 Ω
+4.2V ILED=500mA
Backlight
+5V
_ 16
b. LED B/L drive from A.K directly
b.1 array / yellow-green
LCM
++ A
RL=0 Ω
(recommending)
RL= 2.2 Ω
+4.2V ILED=500mA
Backlight
_ K
+5V
Bolymin, Inc.
◆◆◆
c.*(Option) LED B/L drive from pin1 (Vss) pin2 (V dd)
LCM
Vdd
RL
+ 2
Backlight 1
Vss
(1)
(2)
(3)
(4)
Jump 1,2 Short
Current Resistor required on RL
Jump 15,16 open
To be sure of enough current supply for both Vdd + LED B/L
d. EL B/L drive from A .K directly
EL Panel
Backlight
+110V
A
K
Inverter
AC DC
→
LCM
DC+5V
Bolymin, Inc.
◆◆◆
10. Quality Assurance
10.1 Inspection conditions
The LCD shall be inspected under 40W white fluorescent light.
45°
Definition of applicable Zones
B
A
LCD
BEZEL
PCB
A : D isp la y A re a
B : N o n - D isp la y A re a
Bolymin, Inc.
◆◆◆
10.2 Inspection Parameters
NO.
Parameter
1
Black or White
spots
Criteria
Zone Acceptable Class
Of
Number
Dimension
A
B Defects
D<0.15
*
*
0.15≦D≦0.2
4
4
0.2≦D≦0.25
2
2
D≦0.3
0
1
D=(Long + Short)/2
2
Minor
Acceptable
Level
2.5
*: Disregard
Scratch, Substances
Zone
Acceptable Class
Acceptable
Number
Of
Level
A
B Defects
X(mm) Y(mm)
*
0.04≧W
*
*
3.0≧L 0.06≧W
4
4
2.0≧L 0.08≧W
-
0.1<W
2
3
0
1
Minor
2.5
X: Length Y : Width * : Disregard
Total defects should not exceed 4/module
3
Air Bubbles
(between glass &
polarizer)
Zone Acceptable Class
Number
Of
Dimension
A
B Defects
D≦0.15
0.15<D≦0.25
*
*
2
*
0.25<D
0
1
Minor
*: Disregard
Total defects shall not excess 3/module.
Acceptable
Level
2.5
Bolymin, Inc.
◆◆◆
(1) Pixel shape (with Dent)
0.152
(2) Pixel shape
(With Projection)
Should not be connected to
next pixel
Uniformity
4
0.152
(3) Pin hole
X
Y (X+Y)/2≦0.02mm
(Less than 0.1mm is no
counted)
(4)Deformation
X
(X+Y)/2 ≦0.3mm
Y
Total acceptable number : 1/pixel,5/cell
Bolymin, Inc.
◆◆◆
11. Reliability
■Content of Reliability Test
Environmental Test
No. Test Item
1
2
3
4
5
6
7
Content of Test
Test Condition
Endurance test applying the high
60℃
High Temperature
storage temperature for a long
storage
200hrs
time.
Endurance test applying the high
-20℃
Low Temperature
storage temperature for a long
storage
200hrs
time.
Endurance test applying the
High Temperature electric stress (Voltage & Current) 50℃
Operation
and the thermal stress to the
200hrs
element for a long time.
Endurance test applying the
0℃
Low Temperature
electric stress under low
Operation
200hrs
temperature for a long time.
High
Endurance test applying the high
60℃,90%RH
Temperature/
temperature and high humidity
96hrs
Humidity Storage storage for a long time.
High
Endurance test applying the
Temperature/
electric stress (Voltage & Current) 40℃,90%RH
Humidity
and temperature / humidity stress 96hrs
Operation
to the element for a long time.
Endurance test applying the low
and high temperature cycle.
-20℃
25℃
60℃
-20℃/60℃
Temperature
Cycle
10 cycles
30min
5min
30min
1 cycle
Applicable
Standard
——
——
——
——
——
——
——
Mechanical Test
10~22Hz→1.5mmp-p
Endurance test applying the
vibration during transportation
——
8 Vibration test
22~500Hz→1.5G
and using.
Total 0.5hrs
50G Half sign
Constructional and mechanical
wave 11 msedc
——
9 Shock test
endurance test applying the shock
3 times of each
during transportation.
direction
Endurance test applying the
115mbar
Atmospheric
——
atmospheric pressure during
10
40hrs
pressure test
transportation by air.
Others
VS=800V,RS=1.5kΩ
Static electricity Endurance test applying the
11
——
CS=100pF
test
electric stress to the terminal.
1 time
***Supply voltage for logic system=5V. Supply voltage for LCD system =Operating voltage at 25℃
Bolymin, Inc.
◆◆◆
12. Appendix ( Drawing ,KS0066 controller data)
12-1 Drawing
1.6
7
.1
9.
l5
el
/e
7/
.
31
.
19
dd
ee
ll
3.5
1.5
12.5
5.08
6.0
4.84
0.98
0.92
134.0
16- 1.0PTH
16- 1.8PAD
1.1
1.16
73.0
1.8
9.22
9.75
7.0
18.97(AA)
23.0(VA)
33.8
4- 1.0
2.5
1.5
18
P2.54*15=38.1
146.0 0.5
139.0
3.5
118.84(AA)
123.0(VA)
4- 3.5
2.5
43.0 0.5
36.0
16.0
3.6
20.5
Bolymin, Inc.
◆◆◆
12-2. KS0066 controller data
12-2.1 Function description
The LCD display Module is built in a LSI controller, the controller has two 8-bit registers, an
instruction register (IR) and a data register (DR).
The IR stores instruction codes, such as display clear and cursor shift, and address information
for display data RAM (DDRAM) and character generator (CGRAM). The IR can only be
written from the MPU. The DR temporarily stores data to be written or read from DDRAM
or CGRAM. When address information is written into the IR, then data is stored into the DR
from DDRAM or CGRAM. By the register selector (RS) signal, these two registers can be
selected.
RS
R/W
Operation
0
0
IR write as an internal operation (display clear, etc.)
0
1
Read busy flag (DB7) and address counter (DB0 to DB7)
1
0
Write data to DDRAM or CGRAM (DR to DDRAM or CGRAM)
1
1
Busy Flag (BF)
Read data from DDRAM or CGRAM (DDRAM or CGRAM to DR)
When the busy flag is 1, the controller LSI is in the internal operation mode, and the next
instruction will not be accepted. When RS=0 and R/W=1, the busy flag is output to DB7.
The next instruction must be written after ensuring that the busy flag is 0.
Address Counter (AC)
The address counter (AC) assigns addresses to both DDRAM and CGRAM
Display Data RAM (DDRAM)
This DDRAM is used to store the display data represented in 8-bit character codes. Its
extended capacity is 80×8 bits or 80 characters. Below figure is the relationship between
DDRAM addresses and positions on the liquid crystal display.
High bits
Low bits
Example:DDRAM addresses 4E
AC
(hexadecimal)
AC6 AC5 AC4 AC3 AC2 AC1 AC0
DDRAM Address
1
0
0
1
1
1
0
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◆◆◆
Display position DDRAM address
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
Example: 2-Line by 16-Character Display
Character Generator ROM (CGROM)
The CGROM generate 5×8 dot or 5×10 dot character patterns from 8-bit character codes. See
Table 2.
Character Generator RAM (CGRAM)
In CGRAM, the user can rewrite character by program. For 5×8 dots, eight character patterns
can be written, and for 5×10 dots, four character patterns can be written.
Write into DDRAM the character code at the addresses shown as the left column of table 1. To
show the character patterns stored in CGRAM.
Relationship between CGRAM Addresses, Character Codes (DDRAM) and Character Patterns
(CGRAM Data)
Bolymin, Inc.
◆◆◆
F o r 5 * 8 d o t c h a ra c te r p a tte rn s
C h a ra c te r C o d e s
( D D R A M d a ta )
7 6 5 4 3 2 1 0
H ig h
0 0 0 0
0 0 0 0
0 0 0 0
Low
* 0 0 0
* 0 0 1
* 1 1 1
C h a ra c te r P a tte rn s
( C G R A M d a ta )
C G R A M A d d re ss
5 4 3 2 1 0
H ig h
Low
0 0
0 0
0 1
0 1
0 0 0 1 0
1 0
1 1
1 1
0 0
0 0
0 1
0 1
0 0 1 1 0
1 0
1 1
1 1
0 0
0 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1 1 1 1
1
1
1
0
1
0
1
0
0
1
1
7 6 5 4 3 2 1 0
H ig h
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
* * *
Low
0
0 0 0
0 0 0
0
0
0
0 0
0
0
0
0 0
0
0
0 0
0 0 0
0 0
0
0
C h a ra c te r
p a tte rn ( 1 )
0 0
0 0
C h a ra c te r
p a tte rn ( 2 )
0 0
0 0
0 0
0 0
0 0 0 0 0
C u rso r p a tte rn
C u rso r p a tte rn
* * *
F o r 5 * 1 0 d o t c h a ra c te r p a tte rn s
C h a ra c te r C o d e s
( D D R A M d a ta )
7 6 5 4 3 2 1 0
H ig h
0 0 0 0
Low
* 0 0 0
C G R A M A d d re ss
5 4 3 2 1 0
H ig h
7 6 5 4 3 2 1 0
Low
0
0
0
0
0
0 0 0
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
H ig h
0
1
0
1
0
1
0
1
0
1
0
1 1 1 1
: " H ig h "
C h a ra c te r P a tte rn s
( C G R A M d a ta )
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Low
* 0 0 0 0 0
* 0 0 0 0 0
*
0
0
*
0 0
*
0 0 0
*
0 0 0
*
0
*
0 0 0 0
*
0 0 0 0
*
0 0 0 0
* 0 0 0 0 0
* * * * * * * *
C h a ra c te r
p a tte rn
C u rso r p a tte rn
Bolymin, Inc.
◆◆◆
13-2.2 C.G ROM table. table 2
Code J: English – Japanese Font
U p per
4 b it
L o w er
4 bit
LLLL LLLH LLHL LLHH LHLL LHLH LHHL LHHH HLLL HLLH HLHL HLHH HHLL HHLH HHHL HHHH
LLLL
CG
RAM
(1 )
LLLH
(2 )
LLHL
(3 )
LLHH
(4 )
LHLL
(5 )
LHLH
(6 )
LHHL
(7 )
LHHH
(8 )
HLLL
(1 )
HLLH
(2 )
HLHL
(3 )
HLHH
(4 )
HHLL
(5 )
HHLH
(6 )
HHHL
(7 )
HHHH
(8 )
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Code E: English - European Font
U pper
4 b it
L ow er
4 b it
LLLL
LLLL
CG
RAM
( 1 )
LLLH
CG
RAM
( 2 )
LLHL
CG
RAM
( 3 )
LLHH
CG
RAM
( 4 )
LHLL
CG
RAM
( 5 )
LHLH
CG
RAM
( 6 )
LHHL
CG
RAM
( 7 )
LHHH
CG
RAM
( 8 )
HLLL
CG
RAM
( 1 )
HLLH
CG
RAM
( 2 )
HLHL
CG
RAM
( 3 )
HLHH
CG
RAM
( 4 )
HHLL
CG
RAM
( 5 )
HHLH
CG
RAM
( 6 )
HHHL
CG
RAM
( 7 )
HHHH
CG
RAM
( 8 )
LLLH LLHL LLHH LHLL LHLH LHHL LHHH HLLL HLLH HLHL HLHH HHLL HHLH HHHL HHHH
Code C: English - Cyrillic Font
Bolymin, Inc.
◆◆◆
U pper
4 bit
Lower
4 bit
LLLL LLLH LLH L LLH H LH LL LHLH LH HL LH HH H LLL H LLH H LH L H LH H H H LL HH LH H H H L H HH H
LLLL
CG
RAM
(1)
LLLH
CG
RAM
(2)
LLH L
CG
RAM
(3)
LLH H
CG
RAM
(4)
LH LL
CG
RAM
(5)
LH LH
CG
RAM
(6)
LH H L
CG
RAM
(7)
LH H H
CG
RAM
(8)
H LLL
CG
RAM
(1)
H LLH
CG
RAM
(2)
H LH L
CG
RAM
(3)
H LH H
CG
RAM
(4)
H H LL
CG
RAM
(5)
H H LH
CG
RAM
(6)
HHHL
CG
RAM
(7)
HHHH
CG
RAM
(8)
Bolymin, Inc.
◆◆◆
12-2.3 Instruction table
Instruction Code
Instruction
Description
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Clear
Display
0
0
0
0
0
0
0
0
Return
Home
0
0
0
0
0
0
0
0
Entry Mode
Set
0
0
0
0
0
0
0
1
Display
ON/OFF
Control
0
0
0
0
0
0
1
D
Cursor or
Display
Shift
0
0
0
0
0
1
Function Set
0
0
0
0
1
DL
0
0
0
1
0
0
1
Set
CGRAM
Address
Set
DDRAM
Address
0
Write “00H” to DDRAM and set
1 DDRAM address to “00H” from
AC
1.53ms
1
Set DDRAM address to “00H”
from AC and return cursor to its
- original position if shifted. The
contents of DDRAM are not
changed.
1.53ms
Assign cursor moving direction
I/D SH and enable the shift of entire
display.
C
S/C R/L -
N
F
Execution
time
(fosc=270K
hz)
-
Set display (D), cursor (C ), and
B blinking of cursor (B) on/off
control bit.
Set cursor moving and display
shift control bit, and the direction,
-
without changing of DDRAM
data.
Set interface data length
(DL:8-bit/4-bit), numbers of
- display line (N:2-line/1-line)and,
display font type (F:5×11 dots/5×
8 dots)
39μs
39μs
39μs
39μs
AC5 AC4 AC3 AC2 AC1 AC0
Set CGRAM address in address
counter.
39μs
AC6 AC5 AC4 AC3 AC2 AC1 AC0
Set DDRAM address in address
counter.
39μs
Read Busy
Flag and
Address
0
1
Whether during internal operation
or not can be known by reading
BF AC6 AC5 AC4 AC3 AC2 AC1 AC0
BF. The contents of address
counter can also be read.
Write Data
to RAM
1
0
D7 D6 D5 D4 D3 D2 D1 D0
Write data into internal RAM
(DDRAM/CGRAM).
43μs
Read Data
from RAM
1
1
D7 D6 D5 D4 D3 D2 D1 D0
Read data from internal RAM
(DDRAM/CGRAM).
43μs
0μs
* ”-”:don’t care
Bolymin, Inc.
◆◆◆
12-2.4 Timing characteristics
12-2.4.1Write Operation
VIH1
RS
VIH1
VIL1
VIL1
tAS
R/W
tAH
VIL1
VIL1
PWEH
VIH1
E
tAH
tEf
VIH1
VIL1
VIL1
tEr
VIL1
tDSW
tH
VIH1
DB0 to DB7
VIL1
VIH1
Valid data
VIL1
tcycE
Ta=25℃,Vdd=5.0±0.5V
Item
Symbol
Min
Typ
Max
Unit
tcycE
500
-
-
ns
Enable pulse width (high level)
PWEH
230
-
-
ns
Enable rise/fall time
tEr,tEf
-
-
20
ns
Address set-up time (RS, R/W to E)
tAS
40
-
-
ns
Address hold time
tAH
10
-
-
ns
Data set-up time
tDSW
80
-
-
ns
tH
10
-
-
ns
Enable cycle time
Data hold time
Bolymin, Inc.
◆◆◆
12-2.4.2 Read Operation
VIH1
RS
VIH1
VIL1
VIL1
t
t
AS
AH
VIH1
R/W
VIH1
PWEH
E
tAH
tEf
VIH1
VIH1
VIL1
VIL1
tEr
VOH1
DB0 to DB7
VIL1
tDHR
tDDR
VOL1*
VOH1
Valid data
*VOL1
tcycE
NOTE: *VOL1 is assumed to be 0.8V at 2 MHZ operation.
Ta=25℃,Vdd=5.0±0.5V
Item
Symbol
Min
Typ
Max
Unit
tcycE
500
-
-
ns
Enable pulse width (high level)
PWEH
230
-
-
ns
Enable rise/fall time
tEr,tEf
-
-
20
ns
Address set-up time (RS, R/W to E)
tAS
40
-
-
ns
Address hold time
tAH
10
-
-
ns
Data delay time
tDDR
-
-
160
ns
Data hold time
tDHR
5
-
-
ns
Enable cycle time
Bolymin, Inc.
◆◆◆
12-2.5 Initializing soft ware of LCM
12-2.5.1 8-bit interface
Power on
Wait for more than 15 ms after V CC rises to 4.5 V
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Function set ( Interface is 8 bits long. )
0
0
0
0
1
1
*
*
*
*
Wait for more than 4.1 ms
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Function set ( Interface is 8 bits long. )
0
0
1
0
0
1
*
*
*
*
Wait for more than 100 µs
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Function set ( Interface is 8 bits long. )
0
0
1
0
0
1
*
*
*
*
BF can be checked after the following instructions.
When BF is not checked , the waiting time between
instructions is longer than execution instruction time.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
1
0
0
1
N
F
*
*
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
S
I/D
Initialization ends
8-Bit Ineterface
Function set ( Interface is 8 bits long. Specify
the number of display lines and font. )
The number of display lines and character font
can not be changed after this point.
Display off
Display clear
Entry mode set
Bolymin, Inc.
◆◆◆
12-2.5.2 4-bit interface
Power on
Wait for more than 15 ms after V CC rises to 4.5 V
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4
0
0
0
0
1
1
Function set ( Interface is 8 bits long. )
Wait for more than 4.1 ms
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4
0
0
0
0
1
1
Function set ( Interface is 8 bits long. )
Wait for more than 100 µs
BF can not be checked before this instruction.
RS R/W DB7 DB6 DB5 DB4
0
0
0
0
1
1
RS R/W DB7 DB6 DB5 DB4
0
0
0
0
0
1
0
0
0
0
1
0
0
0
N
F
*
*
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
I/D S
Initialization ends
4-Bit Ineterface
Function set ( Interface is 8 bits long. )
BF can be checked after the following instructions.
When BF is not checked , the waiting time between
instructions is longer than execution instruction time.
Function set ( Set interface to be 4 bits long. )
Interface is 8 bits in length.
Function set ( Interface is 4 bits long. Specify
the number of display lines and character font. )
The number of display lines and character font
can not be changed after this point.
Display off
Display clear
Entry mode set
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