NHD-240128WG-BYGH-VZ#000C

User’s Guide
NHD-240128WG-BYGH-VZ#000C
LCM
(Liquid Crystal Display Graphic Module)
RoHS Compliant
NHD240128WGBYGHVZ#000C-
Newhaven Display
240 x 128 pixels
W= Factory Line G= Display Type: Graphic
Model / Serial number
Yellow/Green LED B/L
STN- Gray
Transflective, 6:00 View, Wide Temperature (-20 ~ +70c)
Built-in Negative voltage; RoHS
With Angled Pin Header
For product support, contact
Newhaven Display International
2511 Technology Drive, #101
Elgin, IL 60124
Tel: (847) 844-8795 Fax: (847) 844-8796
March 11, 2009
Contents
1.Module Classification Information
2.Precautions in use of LCD Modules
3.General Specification
4.Absolute Maximum Ratings
5.Electrical Characteristics
6.Optical Characteristics
7.Power Supply for LCD Module and Contrast Adjust
8.Contour Drawing & Block Diagram
9.Interface Pin Function
10.Display control instruction
11.Timing Characteristics
12.Quality Assurance
13.Reliability
14.Backlight Information
Newhaven Display International
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NHD-240128WG-BYGH-VZ#000C
1.Module Classification Information
NHD
c
240128
W
d
e
G
f
B Y G H - VZ#000C
ghij
9
c Brand Newhaven Display
d Display Font
240 x 128 Dots
e Factory Line: W
f Display Type
H Character Type, G Graphic Type, C
Color
g Model / Serial number = B
h Backlight Type
i LCD Mode
N
Without backlight
B EL, Blue green
A LED, Amber
D EL, Green
R LED, Red
W EL, White
O LED, Orange
F CCFL, White
G LED, Green
Y LED, Yellow Green
T LED, White
B TN Positive, Gray
T FSTN Negative
N TN Negative,
C STN Color
G
STN Positive, Gray
F FSTN Positive
Y STN Positive, Yellow Green M
j LCD Polarize Type/ A Reflective, N.T, 6:00
Temperature range/ D Reflective, N.T, 12:00
View direction
G Reflective, W. T, 6:00
J
9 Special Code
Reflective, W. T, 12:00
H
STN Negative, Blue
Transflective, W.T,6:00
K Transflective, W.T,12:00
C Transmissive, N.T,6:00
F Transmissive, N.T,12:00
B Transflective, N.T,6:00
I
Transmissive, W. T, 6:00
E Transflective, N.T.12:00
L Transmissive, W.T,12:00
VZ : Built-in Negative voltage
000C : With Angled Pin Header
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NHD-240128WG-BYGH-VZ#000C
2.Precautions in use of LCD Modules
(1) Avoid applying excessive shock 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 store in anti-static electricity container and clean environment.
3.General Specification
ITEM
Number of Dots:
Module dimension:
NHD-240128WG-BYGH-VZ#000C
STANDARD VALUE
UNIT
240 ×128
144.0×104.0×14.3(MAX)mm
mm
View area:
114.0×64.0mm
mm
Active area:
107.98×57.58mm
mm
Character size:
(L)0.43×(W)0.43 mm
mm
Character pitch:
(L)0.45×(W)0.45mm
mm
LCD type:
STN-GRAY , Positive , Transflective ,
Duty:
1/128
View direction:
6 o’clock
Backlight:
Newhaven Display International
LED ,Yellow/Green
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4.Absolute Maximum Ratings
ITEM
SYMBOL
MIN.
Operating Temperature
TOP
-20
+70
Storage Temperature
TST
-30
+80
Input Voltage
VI
VSS
VDD
V
Supply Voltage For Logic
VDD-VSS
-0.3
+7
V
Supply Voltage For LCD
VDD-V0
0
21
V
150
mA
LED forward current
TYP.
ILED
MAX.
UNIT
5.Electrical Characteristics
ITEM
Supply Voltage For Logic
SYMBOL
CONDITION
VDD-VSS
MIN.
TYP.
MAX.
UNIT
4.75
5.0
5.25
V
21.7
V
Ta=-20
Supply Voltage For LCD
VDD-V0
Ta=25
19.5
Ta=+70
V
17.8
V
Input High Vol
VIH
VDD -2.2
VDD
V
Input Low Vol
VIL
0
0.8
V
Output High Vol
VOH
VDD -0.3
VDD
V
Output Low Vol.
VOL
0
0.3
V
Supply Current
IDD
60
mA
Newhaven Display International
VDD=5V
45
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55
NHD-240128WG-BYGH-VZ#000C
6.Optical Characteristics
ITEM
SYMBAL CONDITION
MIN.
TYP.
MAX.
UNIT
(V)
CR 2
30
60
deg
(H)
CR 2
-45
45
deg
View Angle
Contrast Ratio
CR
5
T rise
150
200
ms
T fall
150
200
ms
Response Time
6.1 Definitions
View Angles
Contrast Ratio
( Visual angle direction )
Brightness at selected state ( BS )
Brightness at non-selected state ( Bns )
Selected state
CR =
X
Brightness (%)
Z
Non-selected state
Bs
Bns
Operating voltage for LCD driving
Y
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NHD-240128WG-BYGH-VZ#000C
Response Time
7.Power Supply for LCD Module and Contrast Adjust
VDD
2
VO
3
10 K:
5V
LCD
MODULE
1
VSSSelected Condition
Nonselected Condition
17
90 %
100 %
Brightness
VEE ( - 16 V )
Nonselected Condition
10 %
tr
td
Rise Time
Decay Time ( fall time tf )
VDD-V0: LCD Operating Voltage (at 25 )
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NHD-240128WG-BYGH-VZ#000C
8.Contour Drawing & Block Diagram
LED B/L drive directly
from A,K .
T6963C
Controller
CData
LP
FR
HSCP
ED
A
K
Vdd,Vss,V1,V4,V5
B/L
LCM
Com64~128
32K8
SRAM
Com Driver
Address Data
R
240X128 DOT
MD2
FS
FS
H
L
Font 6X8 8X8
Font select
Com1~64
80 series
or
68 series
WR
RD
CE
C/D
RESET
DB0~DB7
Com Driver
MPU
Seg1~80
Seg81~160
Seg160~240
Seg Driver
Seg Driver
Seg Driver
(32K optional)
MD2
H
L
Column 32 40
Column select
Vdd,Vss,V2,V3,V5
Vdd,Vss
VR
10K~20K
Bias and
Power Circuit
N.V.
Generator
Frame
(Bezel)
Vdd
Vo
Vee
External contrast adjustment.
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NHD-240128WG-BYGH-VZ
#000C
9.Interface Pin Function
Pin No.
Symbol
Level
Description
1
Vss
GND
2
Vdd
Power supply ( +5 V )
3
Vo
4
C/D
Power supply for LCD driver
H/L
WR=L , C/D=H : Command Write
RD=L , C/D=H : Status Read
C/D=L: Data write
C/D=L: Data read
5
RD
L
Data read. Read data from T6963C when RD = L
6
WR
L
Data write. Write data into T6963C when WR = L
7
DB0
H/L
Data bus line
8
DB1
H/L
Data bus line
9
DB2
H/L
Data bus line
10
DB3
H/L
Data bus line
11
DB4
H/L
Data bus line
12
DB5
H/L
Data bus line
13
DB6
H/L
Data bus line
14
DB7
H/L
Data bus line
15
CE
L
16
RESET
H/L
17
Vee
18
MD2
H/L
H: 32 columns ; L: 40 columns
19
FS
H/L
Pins for selection of font ; H : 6 * 8 , L : 8 * 8
Newhaven Display International
L : Chip enable
H : Normal ; L : Initialize T6963C
Negative Voltage Output (-16V)
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NHD-240128WG-BYGH-VZ#000C
20
N.C
Newhaven Display International
No connection
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#000CNHD-240128WG-BYGH-VZ
10.Display control instruction
The LCD Module has built in a T6963C
LSI controller, It has an 8-bit parallel data bus and control lines for
writing or reading through an MPU interface, it has a 128-word character generator ROM ( refer to Table 1. ),
which can control an external display RAM of up to 8K bytes. Allocation of text, graphics and external character
generator RAM can be made easily and the display window can be moved freely within the allocated memory
range.
xRAM Interface
The external RAM is used to store display data ( text, graphic and external CG data ). It can be freely allocated
to the memory area ( 8 Kbyte max ).
Recommend
0000H
TEXT AREA
0C00H
GRAPHIC
AREA
1800H
CG RAM
AREA
2000H
Newhaven Display International
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NHD-240128WG-BYGH-VZ#000C
Flowchart of communications with MPU
(1)Status Read
A status check must be performed before data is read or written.
Status check
The Status of T6963C can be read from the data lines.
RD
L
WR
H
CE
L
C/D
H
Do to D7
H
The T6963C status word format is as follows:
MSB
LSB
STA7
STA6
STA5
STA4
STA3
STA2
STA1
STA0
D7
D6
D5
D4
D3
D2
D1
D0
STA0
Check command execution capability
STA1
Check data read/write Capability
STA2
Check Auto mode data read capability
STA3
Check Auto mode data write capability
STA4
Not used
STA5
Check controller operation capability
STA6
Error flag. Used for Screen Peek and Screen copy
commands.
STA7
Check the blink condition
0:Disable
1:Enable
0:Disable
1:Enable
0:Disable
1:Enable
0:Disable
1:Enable
0:Disable
1:Enable
0:No error
1:Error
0:Disable off
1:Normal display
(Note 1) It is necessary to check STA0 and STA1 at the same time.
There is a possibility of erroneous operation due to a hardware interrupt.
(Note 2) For most modes STA0/STA1 are used as a status check.
(Note 3) STA2 and STA3 are valid in Auto mode; STA0 and STA1 are invalid.
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NHD-240128WG-BYGH-VZ#000C
Status Checking flow
(a)
(b)
(Note 4) When using the MSB=0 command, a Status Read must be performed.
If a status check is not carried out, the T6963C cannot operate normally, even after a delay time.
The hardware interrupt occurs during the address calculation period (at the end of each line).
If a MSB=0 command is sent to the T6963C during this period, the T6963C enters Wait status.
If a status check is not carried out in this state before the next command is sent, there is the
possibility that the command or data date will not be received.
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NHD-240128WG-BYGH-VZ#000C
(2)Setting date
When using the T6963C, first set the data, then set the command.
Procedure for sending a command
(a)The case of 1 date
(Note)
(b)The case of 2 data
When sending more than two data, the last datum (or last two data)is valid.
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NHD-240128WG-BYGH-VZ#000C
COMMAND DEFINITIONS
COMMAND
REGISTERS SETTING
SET CONTROL WORD
MODE SET
DISPLAY MODE
CURSOR PATTERN
SELECT
DATA AUTO
READ/WRITE
DATA READ/WRITE
SCREEN PEEK
SCREEN COPY
BIT SET/RESET
CODE
D1
D2
00100001
00100010
00100100
01000000
01000001
01000010
01000011
1000×000
1000×001
1000×011
1000×100
10000×××
10001×××
10010000
1001××10
10001××11
100101××
100110××
100111××
10100000
10100001
10100010
10100011
10100100
10100101
10100110
10100111
10110000
10110001
10110010
11000000
11000001
11000010
11000011
11000100
11000101
11100000
11101000
11110×××
11111×××
1111×000
11111×001
11111×010
11111×011
11111×100
11111×101
X address
Date
Low address
Low address
Columns
Low address
Columns
Y address
00H
High address
High address
00H
High address
00H
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Data
Data
Data
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FUNCTION
Set Cursor Pointer
Set Offset Register
Set Address Pointer
Set Text Home Address
Set Text Area
Set Graphic Home Address
Set Graphic Area
OR mode
EXOR mode
AND mode
Text Attribute mode
Internal CG ROM mode
External CG RAM mode
Display off
Cursor on, blink off
Cursor on, blink on
Text on, graphic off
Text off, graphic on
Text on, graphic on
1-line cursor
2-line cursor
3-line cursor
4-line cursor
5-line cursor
6-line cursor
7-line cursor
8-line cursor
Set Data Auto Write
Set Data Auto Read
Auto Reset
Data Write and Increment ADP
Data Read and Increment ADP
Data Write and Decrement ADP
Data Read and Decrement ADP
Data Write and Non-variable ADP
Data Read and Non-variable ADP
Screen Peek
Screen Copy
Bit Reset
Bit Set
Bit 0 (LSB)
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
NHD-240128WG-BYGH-VZ#000C
11111×110
11111×111
Bit 6
Bit 7 (MSB)
X: invalid
Setting registers
CODE
00100001
00100010
00100100
HEX.
21H
23H
24H
FUNCTION
SET CURSOR POINTER
SET OFFSET REGISTER
SET ADDRESS POINTER
D1
D2
X ADRS
Y ADRS
DATA
00H
LOW ADRS HIGH ADRS
(1)Set Cursor Pointer
The position of the cursor is specified by X ADRS and Y ADRS. The cursor position can only be moved by
this command. Data read/write from the MPU never changes the cursor pointer. X ADRS and Y ADRS are
specified as follows.
X ADRS
00H to 4FH (lower 7 bits are valid)
Y ADRS
00H to 1FH (lower 5 bits are valid)
Single-Scan
X ADRS 00 to 4FH
Y ADRS 00H to 0FH
(2)Set Offset Register
The offset register is used to determine the external character generator RAM area.
The T6963C has a 16-bit address bus as follows.
T6963C assign External character generator, when character code set 80H TO FFH in using internal character
generator. Character code 00H to 80H assign External character generator, when External generator mode.
The senior five bits define the start address in external memory of the CG RAM area. The next eight bits
represent the character code of the character. In internal CG ROM, character codes 00H to 7FH represent the
predefined “internal” CG ROM characters, and codes 80H to FFH represent the user’s own “external”
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characters. In external CG ROM mode, all 256 codes from 00H to FFH can be used to represent the user’s
own characters. The three least significant bits indicate one of the eight rows of eight dots that define the
character’s shape.
The relationship between display RAM address and offset register
Offset register data
CG RAM hex. address (start to end)
00000
0000 to 07 FFH
00001
0800 to 0FFFH
00010
1000 to 17FFH
11100
E000 to E7FFH
11101
E800 to EFFFH
11110
F000 to F7FFH
11111
F800 to FFFFH
(Example 1)
Offset register
02H
Character code
80H
Character generator RAM start address
0001
0100
1
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0000
0000
4
0
0
H
NHD-240128WG-BYGH-VZ#000C
(Example 2) The relationship between display RAM data and display characters
and
are displayed by character generator RAM.
(3)Set Address Pointer
The Set Address Pointer command is used to indicate the start address for writing to (or reading from) external
RAM.
The Flowchart for Set Address Pointer command
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Set Control Word
CODE
HEX.
FUNCTION
D1
01000000
40H
Set Text Home Address
01000001
41H
Set Text Area
01000010
42H
Set Graphic Home Address
01000011
43H
Set Graphic Area
D2
Low address High address
Columns
00H
Low address High address
Columns
00H
The home address and column size are defined by this command.
(1)Set Text Home Address
The starting address in the external display RAM for text display is defined by this command.
The text home address indicates the leftmost and uppermost position.
The relationship between external display RAM address and display position
TH
TH+CL
TH+TA
TH+TA+CL
(TH+TA)+TA
TH+2TA+CL
(TH+2TA)+TA
TH+3TA+CL
TH+(n-1)TA
TH+(n-1)TA+CL
TH: Text home address
TA: Text area number (columns)
CL: Columns are fixed by hardware (pin-programmable).
(Example)
Text home address
Text area
0000H
0020H
32 Columns
4 Lines
0000H
0001H
001EH
001FH
0020H
0021H
003EH
002FH
0040H
0041H
005EH
005FH
0060H
0061H
007EH
007FH
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NHD-240128WG-BYGH-VZ#000C
(2)Set Graphic Home Address
The starting address of the external display RAM used for graphic display is defined by this command. The
graphic home address indicates the leftmost and uppermost position.
The relationship between external display RAM address and display position
GH
GH+GL
GH+GA
GH+GA+CL
(GH+GA)+GA
GH+2GA+CL
(GH+2GA)+GA
GH+3GA+CL
GH+(n-1)GA
GH+(n-1)GA+CL
GH: Graphic home address
GA: Graphic area number (columns)
CL: Columns are fixed by hardware (pin-programmable).
(Example)
Graphic home address
0000H
Graphic area
0020H
32 Columns
2 Lines
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0000H
0001H
001EH
001FH
0020H
0021H
003EH
003FH
0040H
0041H
005EH
005FH
0060H
0061H
007EH
007FH
0080H
0081H
009EH
009FH
00A0H
00A1H
00BEH
00BFH
00C0H
00C1H
00DEH
00DFH
00E0H
00E1H
00FEH
00FFH
0100H
0101H
011EH
011FH
0120H
0121H
013EH
013FH
0140H
0141H
015EH
014FH
0160H
0161H
017EH
017FH
0180H
0181H
109EH
019FH
01A0H
01A1H
01BEH
01BFH
01C0H
01C1H
01DEH
01DFH
01E0H
01E1H
01FEH
01FFH
(3)Set Text Area
The display columns are defined by the hardware Setting. This command can be used to adjust the columns of
the display.
(Example)
LCD size
20 columns, 4lines
Text home address
0000H
Text area
0014H
Set 32 columns, 4 Lines
0000
0001
………
0013
0014
………
001F
0014
0015
………
0027
0028
………
0033
0028
0029
………
003B
003C
………
0047
003C
003D
………
004F
0050
………
005B
LCD
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(4) Set Graphic Area
The display columns are defined by the hardware setting. This command can be used to adjust the columns of
the graphic display.
(Example)
LCD size
20 columns, 2lines
Graphic home address
0000H
Graphic are
0014H
Set 32 columns, 2 Lines
0000
0001
………
0013
0014
………
001F
0014
0015
………
0027
0028
………
0033
0028
0029
………
003B
003C
………
0047
003C
003D
………
004F
0050
………
005B
0050
0051
………
0063
0064
………
006F
0064
0065
………
0077
0078
………
0083
0078
0079
………
008B
008C
………
0097
008C
008D
………
009F
00A0
………
00AB
00A0
00A1
………
00B3
00B4
………
00BF
00B4
00B5
………
00C7
00C8
………
00D3
00C8
00C9
………
00DB
00DC
………
00E7
00DC
00DD
………
00EF
00F0
………
00FD
00F0
00F1
………
0103
0104
………
011F
0104
0105
………
0127
0128
………
0123
0128
0129
………
013B
0013C
………
00147
013C
013D
………
014F
0150
………
015B
LCD
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If the graphic area setting is set to match the desired number of columns on the LCD, the addressing scheme
will be automatically modified so the start address of each line equals the end address of the previous line
+1.
Mode set
CODE
FUNCTION
OPERAND
1000×000
OR Mode
1000×001
EXOR Mode
1000×011
AND Mode
1000×100
TEXT ATTRIBUTE Mode
10000×××
Internal Character Generator Mode
10001×××
External Character Generator Mode
X: invalid
The display mode is defined by this command. The display mode does not change until the next command is
sent. The logical OR, EXOR, AND of text or graphic display can be displayed. In Internal Character Generator
mode, character codes 00H to 7FH are assigned to the built-in character generator ROM. The character codes
80H to FFH are automatically assigned to the external character generator RAM.
(Example)
(Note)Attribute functions can only be applied to text display, since the attribute data is placed in the graphic RAM
area.
Attribute function
The attribute operations are Reverse display, Character blink and Inhibit. The attribute data is written into the
graphic area which was defined by the Set Control Word command. Only text display is possible in Attribute
Function mode; graphic display is automatically disabled. However, the Display Mode command must be used to
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turn both Text and Graphic on in order for the Attribute function to be available.
The attribute data for each character in the text area is written to the same address in the graphic area. The Attribute
function is defined as follows.
Attribute RAM 1byte
×
×
×
×
d3
d2
d1
d0
0
0
0
0
Normal display
0
1
0
1
Reverse display
0
0
1
1
Inhibit display
1
0
0
0
Blink of normal display
1
1
0
1
Blink of reverse display
1
0
1
1
Blink of inhibit display
d3
d2
d1
d0
FUNCTION
X: invalid
Display mode
CODE
FUNCTION
10010000
Display off
1001××10
Cursor on, blink off
1001××11
Cursor on, blink on
100101××
Text on, graphic off
100110××
Text off, graphic on
100111××
Text on, graphic on
OPERAND
X: invalid
(Note)It is necessary to turn on “Text display” and “Graphic display” in the following cases.
a) Combination of text/graphic display
b) Attribute function
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Cursor pattern select
CODE
FUNCTION
10100000
1-line cursor
10100001
2-line cursor
10100010
3-line cursor
10100011
4-line cursor
10100100
5-line cursor
10100101
6-line cursor
10100110
7-line cursor
10100111
8-line cursor
OPERAND
When cursor display is ON, this command selects the cursor pattern in the range 1 line to 8 lines.
The cursor address is defined by the Cursor Pointer Set command.
Data Auto Read/Write
CODE
HEX.
FUNCTION
10110000
B0H
Set Data Auto Write
1011001
B1H
Set Data Auto Read
10110010
B2H
Auto Reset
OPERAND
The command is convenient for sending a full screen of data from the external display RAM. After setting Auto mode, a Data Write (or
Read) command need not be sent between each datum. A Data Auto Write (or Read) command must be sent after a Set Address Pointer
command. After this command, the address pointer is automatically incremented by 1 after each datum. In Auto mode, the T6963C
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cannot accept any other commands.
The Auto Reset command must be sent to the T69963C after all data has been sent, to clear Auto mode.
(Note)A Status check for Auto mode
(STA2, STA3 should be checked between sending of each datum. Auto Reset should be performed after
checking STA3=1 (STA2=1.) Refer to the following flowchart.
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a) Auto Read mode
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b) Auto Write mode
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Date Read/Write
CODE
HEX.
FUNCTION
11000000
C0H
Data Write and Increment ADP
11000001
C1H
Data Read and Increment ADP
11000010
C2H
Data Write and Decrement ADP
11000011
C3H
Data Read and Decrement ADP
11000100
C4H
Data Write and Non-variable ADP
11000101
C5H
Data Read and Non-variable ADP
OPERAND
Data
Data
Data
This command is used for writing data from the MPU to external display RAM, and reading data from external
display RAM to the MPU. Data Write/Data Read should be executed after setting address using Set Address
Pointer command. The address pointer can be automatically incremented or decremented using this command.
(Note)This command is necessary for each 1-byte datum.
Refer to the following flowchart.
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Screen Peek
CODE
HEX.
11100000
E0H
FUNCTION
Screen Peek
OPERAND
e
This command is used to transfer 1 byte of displayed data to the data stack; this byte can then be read from the
MPU by data access. The logical combination of text and graphic display data on the LCD screen can be read by
this command.
The status (STA6) should be checked just after the Screen Peek command. If the address determined by the Set
Address Pointer command is not in the graphic area, this command is ignored and a status flag (STA6) is set.
Refer to the following flowchart.
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Screen Copy
CODE
HEX.
11101000
E8H
FUNCTION
OPERAND
Screen Copy
This command copies a single raster line of data to the graphic area.
The start point must be set using the Set Address Pointer command.
(Note 1)
If the attribute function is being used, this command is not available.
(With Attribute data is graphic area data.)
Refer to the following flowchart.
Bit Set/Reset
CODE
Newhaven Display International
FUNCTION
OPERAND
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11110×××
Bit Reset
11111×××
Bit Set
1111×000
Bit 0 (LSB)
1111×001
Bit 1
1111×010
Bit 2
1111×011
Bit 3
1111×100
Bit 4
1111×101
Bit 5
1111×110
Bit 6
1111×111
Bit 7 (MSB)
X: invalid
This command use to set or reset a bit of the byte specified by the address pointer.
Only one bit can be set/reset at a time.
Refer to the following flowchart.
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Newhaven Display International
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CHARACTER CODE MAP
U pper
4 b it
L ow er
4 b it
LLLL
LLLH LLHL LLHH LHLL LHLH LHHL LHHH
LLLL
LLLH
LLHL
LLHH
LHLL
LHLH
LHHL
LHHH
HLLL
HLLH
HLHL
HLHH
HHLL
HHLH
HHHL
HHHH
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11.Timing Characteristics
Bus Timing
( Vss = 0 V , VDD = 5 V )
Item
Symbol
Min
C/D Set-up Time
tCDS
100
ns
C/D Hold Time
tCDH
10
ns
tCDS,tRD,tWR
80
ns
Data Set-up Time
tDS
80
ns
Data Hold Time
tDH
40
ns
Access Time
tACC
Output Hold Time
tOH
CE,RD,WR Pulse Width
Typ
Max
Unit
150
ns
50
ns
10
C/D
tCDS
tCDH
CE
tCE ,tRD,tWR
RD,WR
tDS
D0 to D7
( WRITE)
tDH
D0 to D7
( READ)
tOH
tACC
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NHD-240128WG-BYGH-VZ
12.Quality Assurance
Screen Cosmetic Criteria
No.
Defect
Judgement Criteria
Partition
A) Clear
Size: d mm
Acceptable Qty in active
area
d
0.1
Disregard
0.1<d 0.2
6
0.2<d 0.3
2
0.3<d
1
Spots
0
Note: Including pin holes and defective dots which
must be within one pixel size.
Minor
B) Unclear
Size: d mm
Acceptable Qty in active
area
d
0.2
Disregard
0.2<d 0.5
6
0.5<d 0.7
2
0.7<d
0
Size: d mm
Acceptable Qty in active
d 0.3
Disregard
area
2
Bubbles in Polarizer
0.3<d 1.0
3
1.0<d 1.5
1
1.5<d
Minor
0
In accordance with spots cosmetic criteria. When
3
Scratch
the light reflects on the panel surface, the scratches Minor
are not to be remarkable.
4
Allowable Density
Above defects should be separated more than
30mm each other.
Minor
Not to be noticeable coloration in the viewing area
of the LCD panels.
5
Coloration
Minor
Back-light type should be judged with back-light
on state only.
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13.RELIABILITY
Content of Reliability Test
Environmental Test
No. Test Item
1
2
3
4
5
Content of Test
Test Condition
High Temperature
storage
Endurance test applying the high
storage temperature for a long time.
80
Low Temperature
Endurance test applying the high
storage temperature for a long time.
-30
storage
High Temperature
Operation
Low Temperature
Operation
High Temperature/
Humidity Storage
Endurance test applying the electric
stress (Voltage & Current) and the
thermal stress to the element for a
long time.
Endurance test applying the electric
stress under low temperature for a
long time.
Endurance test applying the high
temperature and high humidity
storage for a long time.
Applicable
Standard
——
200hrs
——
200hrs
70
——
200hrs
-20
——
200hrs
80 ,90%RH
——
96hrs
Endurance test applying the electric
High Temperature/ stress (Voltage & Current) and
6
Humidity Operation temperature / humidity stress to the
element for a long time.
70 ,90%RH
——
96hrs
Endurance test applying the low and
high temperature cycle.
-30
25
80
-30
7 Temperature Cycle
/80
——
10 cycles
30min
5min
30min
1 cycle
Mechanical Test
8 Vibration test
Endurance test applying the vibration 10~55Hz 1.5mmp-p
during transportation and using.
Total 0.5hrs
——
Others
VS=800V,RS=1.5k
Endurance test applying the electric
9 Static electricity test
stress to the terminal.
——
CS=100pF
1 time
***Supply voltage for logic system=5V. Supply voltage for LCD system = Operating voltage at 25
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14.Backlight Information
14.1 Specification
PARAMETER
SYMBOL
MIN
TYP
MAX
Supply Current
ILED
800
900
1350
Supply Voltage
V
4.0
4.2
4.4
Reverse Voltage
VR
Luminous Intensity
IV
Life Time
8
160
UNIT
TEST CONDITION
mA
V=4.2V
V
V
200
CD/M2
ILED=900mA
100K
Hr.
ILED 900mA
Color
YELLOW/GREEN
Note: The LED of B/L is drive by current only, drive voltage is for reference only.
drive voltage can make driving current under safety area (current between
minimum and maximum).
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