LC2021-BMDWH6-D Datasheet PDF - Laurel

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LC2021-BMDWH6-D
Laurel

Part Number LC2021-BMDWH6-D
Description LCD Module
Page 25 Pages


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Laurel Electronics Co., Ltd.
LCD Module Specification
Model No.: LC2021-BMDWH6-D
Table of Contents
1. BASIC SPECIFICATIONS ···················································· 2
2. ABSOLUTE MAXIMUM RATINGS ·········································· 3
3. ELECTRICAL CHARACTERISTICS ······································· 4
4. OPERATING PRINCIPLES & METHODS ································ 7
5. MPU INTERFACE ····························································· 12
6. DISPLAY CONTROL INSTRUCTIONS ·································· 16
7. ELECTRO-OPTICAL CHARACTERISTICS ···························· 21
8. DIMENSIONAL OUTLINE ··················································· 22
9. LCD MODULE NUMBERING SYSTEM ·································· 23
10. PRECAUTIONS FOR USE OF LCD MODULE ······················· 24
RECORD OF REVISION
Rev.
Date
Page
0.1 2009/06/25
-
0.2 2011/10/26 All pages
1.0 2013/12/02
3
22
1.1 2016/01/26
6
Item
-
-
1.4
8
3.3, 3.4
Description
New release
Change content organization.
1. Add section 1.4: Swap Pin15/Pin16 terminal functions
2. Change PCB width from 37.0mm to 35.0mm.
Modify LED backlight characteristics and power supply circuit



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Laurel Electronics Co., Ltd.
LC2021-BMDWH6-D Rev 1.1
1. BASIC SPECIFICATIONS
1.1 Features
Item
Specifications
Display Format
20 Characters x 2 Lines
LCD Type
STN - Blue - Negative - Transmissive
White characters on blue background
Driving Method
1/16 Duty, 1/4 Bias
Viewing Direction
6
Backlight & Color
LED, white color
Outline Dimension (WxHxT) 116.0 x 35.0 x 13.5
Viewing Area (WxH)
83.0 x 18.6
Character Size (WxH)
3.20 x 5.55
Dot Size (WxH)
0.60 x 0.65
Weight
55
Controller
SPLC780D1-001A
Interface
8-bit parallel (6800 series MPU)
Power Supply (VDD)
2.7 to 5.5
-2-
Unit
-
-
-
Oclock
-
mm
mm
mm
mm
g
-
-
V
1.2 Block Diagram
FG
VSS
J2
16 COM
LCD PANEL
VDD
VO LCD
20 Characters x 2 Lines
RS Controller
R/W
E
SPLC780D1
or Eqv.
40 SEG
60 SEG
DB0
DB7
Segment driver
VDD
J3
LEDA
LEDK
J4
VSS
LED Backlight



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Laurel Electronics Co., Ltd.
LC2021-BMDWH6-D Rev 1.1
-3-
1.3 Terminal Functions
Pin No.
Symbol
Level
1 VSS 0V
2
VDD
2.7V to 5.5V
3 VO
-
4 RS H/L
5 R/W H/L
6 E H, HL
7 DB0 H/L
8 DB1 H/L
9 DB2 H/L
10 DB3 H/L
11 DB4 H/L
12 DB5 H/L
13 DB6 H/L
14 DB7 H/L
15 LEDA
5V
16 LEDK
0V
Function
Ground (connects to frame ground via jumper J2)
Power supply for logic
Operating voltage for LCD (contrast adjusting).
Refer to section 3.5
Data or instruction selection
H: Display data L: Instruction code
Read or write selection
H: Read operation L: Write operation
Enable signal
In read mode (R/W=H), data appears at DB0 to DB7
while E is H.
In write mode (R/W=L), data of DB0 to DB7 is latched
at the falling edge of E.
In 8-bit mode, used as low order bi-directional data
bus.
In 4-bit mode, open these terminals.
In 8-bit mode, used as high order bi-directional data
bus.
In 4-bit mode, used as both high and low order data
bus.
Power supply for LED backlight
Refer to section 1.4, 3.3, 3.4
1.4 Swap Pin 15 and Pin 16 Terminal Functions
Jumper Status
J5, J8
J6, J7
Close
Open
Open
Close
Terminal Functions
Pin 15
Pin 16
LEDA
LEDK
LEDK
LEDA
Remark
<Default>
2. ABSOLUTE MAXIMUM RATINGS
Item
Symbol
Supply Voltage (Logic)
VDD-VSS
Supply Voltage (LCD)
VDD-VO
Input Voltage
VI
Operating Temperature
Topr
Storage Temperature
Tstg
Min.
-0.3
-0.3
-0.3
-20
-30
Max.
7.0
10.0
VDD+0.3
70
80
Unit
V
V
V
°C
°C



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Laurel Electronics Co., Ltd.
LC2021-BMDWH6-D Rev 1.1
-4-
3. ELECTRICAL CHARACTERISTICS
3.1 DC Characteristics (Ta=25°C)
Item
Symbol
Condition
Supply Voltage
(Logic)
Supply Voltage
(LCD Drive)
VDD
VDD-VO
Input High Voltage
VDD=4.5 to 5.5V
VIH
VDD=2.7 to 4.5V
Min.
2.7
-
2.5
0.7VDD
Input Low Voltage
Output High Voltage
Output Low Voltage
Supply Current
(Logic)
VIL
VOH
VOL
IDD
VDD=4.5 to 5.5V -0.3
VDD=2.7 to 4.5V -0.3
VDD=4.5 to 5.5V
IOH=-0.1mA
2.4
VDD=2.7 to 4.5V
IOH=-0.1mA
0.75VDD
VDD=4.5 to 5.5V
IOH=0.1mA
0
VDD=2.7 to 4.5V
IOH=0.1mA
0
VDD=5.0V
-
Typ.
5.0
4.6
-
-
-
-
-
-
-
-
1.6
Max.
5.5
Unit
V
-
VDD
VDD
0.6
0.55
VDD
V
V
V
V
V
V
VDD
V
0.4 V
0.2VDD V
3.0 mA
3.2 Interface Timing Chart (Ta=25°C)
Mode
Characteristic
Symbol VDD=4.5 to 5.5V VDD=2.7 to 4.5V Unit
Min. Max. Min. Max.
E Cycle Time
tC 400 - 1000 -
E Rise/Fall Time
tR, tF
-
25
-
25
Write Mode E Pulse Width (High,Low) tW 150 - 450 -
(Refer to
MPU Write
Timing)
R/W and RS Setup Time
R/W and RS Hold Time
tSU1
tH1
30
10
-
-
60
20
- ns
-
Data Setup Time
tSU2
40
- 195 -
Data Hold Time
tH2 10 - 10 -
E Cycle Time
tC 400 - 1000 -
E Rise/Fall Time
tR, tF
-
25
-
25
Read Mode
(Refer to
MPU Read
Timing)
E Pulse Width (High,Low)
R/W and RS Setup Time
R/W and RS Hold Time
Data Output Delay Time
tW
tSU
tH
tD
150 - 450 -
30 - 60 - ns
10 - 20 -
- 100 - 360
Data Hold Time
tDH 5 - 5 -



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