Pin No.

Symbol

Level

Description

1

DB7

H/L

Data bus line

2

DB6

H/L

Data bus line

3

DB5

H/L

Data bus line

4

DB4

H/L

Data bus line

5

DB3

H/L

Data bus line

6

DB2

H/L

Data bus line

7

DB1

H/L

Data bus line

8

DB0

H/L

Data bus line

9

E1

H,H→L

Chip enable signal

10

R/W

H/L

H: Read(Module-MPU) L: Write(MPU-Module)

11

RS

H/L

H: DATA, L: Instruction code

12

VO

(Variable)

Operating voltage for LCD

13

VSS

0V

Ground

14

VDD

5.0V

Supply Voltage for logic

15

E2

H,H→L

Chip enable signal

16

NC

—

NC

17

A

—

Power Supply for LED+

18

K

—

Power Supply for LED-

Item

Dimension

Unit

Number of Characters

40 characters x 4Lines

-

Module dimension

190.0 x 54.0 x 13.6 (MAX)

mm

View area

147.0 x 29.5

mm

Active area

140.45 x 23.16

mm

Dot size

0.50 x 0.55

mm

Dot pitch

0.57 x 0.62

mm

Character size

2.78 x 4.89

mm

Character pitch

3.53 x 6.09

mm

LCD type

STN Positive, Yellow Green Transflective

(In LCD production, It will occur slightly color difference. We can only guarantee the same color in the same batch.)

Duty

1/16

View direction

6 o’clock

Backlight Type

LED, Yellow Green

IC

ST7066U

Interface

68 series

Item

Symbol

Min

Typ

Max

Unit

Operating Temperature

TOP

-20

-

+70

°C

Storage Temperature

TST

-30

-

+80

°C

Input Voltage

VI

VSS

-

VDD

V

Supply Voltage For Logic

VDD-VSS

-0.3

-

7

V

Supply Voltage For LCD

VDD-Vo

-0.3

-

13

V

Item

Symbol

Condition

Min

Typ

Max

Unit

Supply Voltage For Logic

VDD-VSS

-

4.5

5.0

5.5

V

Supply Voltage For LCD

*Note

VDD-V0

Ta=-20°C
Ta=25°C
Ta=70°C

-

4.2

3.8

-

4.35

-

5.7

4.5

-

V
V
V

Input High Volt.

VIH

-

0.7 VDD

-

VDD

V

Input Low Volt.

VIL

-

VSS

-

0.6

V

Output High Volt.

VOH

-

3.9

-

VDD

V

Output Low Volt.

VOL

-

0

-

0.4

V

Supply Current

IDD

VDD=5.0V

1.8

3.5

7.0

mA

Item

Symbol

Min

Unit

Remark

Response time

Tr+Tf

8=0^°、Φ=0^°

-

30

40

.ms

Note 3

Contrast ratio

CR

At optimized viewing angle

800

1000

-

-

Note 4

Color

Chromaticity

White

Wx

8=0^°、Φ=0

0.27

0.32

0.37

Note 2,6,7

Wy

0.295

0.345

0.395

Viewing angle

ΘR

CR≧10

70

80

-

Note 1

ΘL

70

80

-

ΦT

70

80

-

ΦB

70

80

-

Brightness

-

-

250

350

-

cd/m2

Center of
display

Uniformity

(U)

-

75

-

-

%

Note5