NHD-0420AZ-FSW-GBW-33V3

P1-P3 P4-P6 P7-P9 P10-P10

[4]

Pin Description and Wiring Diagram

Pin No.

Symbol

External

Connection

Function Description

1

Vss

Power Supply

Ground

2

VDD

Power Supply

Supply voltage for logic (

+

3.3

V

)

3

V0

Power Supply

Powe

r supply for contrast (approx.

0

.1

V

)

4

RS

MPU

Register select signal. RS=0: Command, RS=1: Data

5

R/W

MPU

Read/Write select

signal, R/W=1: Read R/W:=0: Write

6

E

MPU

Operation enable signal. Falling edge triggered.

7

-

10

DB0

-

DB3

MPU

For low order bi

-

directional three

-

state data bus lines. These four

are not used during 4-bit operation.

11

-

14

DB4

-

DB7

MPU

Four high order

bi

-

directional three

-

state data bus lines.

15

LED+

Power Supply

Power supply for LED Backlight (+

3.0

V

)

16

LED

-

Power Supply

Ground for backlight

Recommended LCD connector: 2.54mm pitch pins

Backlight connector: --- Mates with: ---

[5]

Electrical Characteristics

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Operating Temperature Range

T

op

Absolute Max

-

20

-

+70

⁰

C

Storage Temperature Range

T

st

Absolute Max

-

30

-

+80

⁰

C

Supply Voltage

VDD

-

3.

3

5.5

V

Supply Current

IDD

Ta=25°C,

VDD=

3.

3

V

-

2

3

.0

mA

Supply for LCD (contrast)

V

DD

-

V0

Ta=25°C

-

3.

2

-

V

“H” Level input

Vih

0.7 VDD

-

VDD

V

“L” Level input

Vil

0

-

0.6

V

“H” Level output

Voh

3.9

-

-

V

“L” Level output

Vol

-

-

0.

4

V

Backlight Supply Voltage

V

led

-

-

3.0

-

V

Backlight Supply Current

Iled

V

led

=

3.0

V

-

15

-

mA

Optical Characteristics

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Viewing Angle

–

Vertical (top)

AV

Cr

≥

2

-

25

-

⁰

Viewing Angle

–

Vertical (bottom)

AV

Cr

≥

2

-

70

-

⁰

Viewing Angle

–

Horizontal (left)

AH

Cr

≥

2

-

30

-

⁰

Viewing Angle

–

Horizontal (right)

AH

Cr

≥

2

-

30

-

⁰

Contrast Ratio

Cr

-

2

-

-

Response Time (rise)

Tr

-

-

120

150

ms

Response Time (fall)

Tf

-

-

120

150

ms

Controller Information

Built-in ST7066U. Download specification at http://www.newhavendisplay.com/app_notes/ST7066U.pdf

Display character address code

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

00

01

02

03

04

05

06

07

08

09

0A

0B

0C

0D

0E

0F

10

11

12

13

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51

52

53

14

15

16

17

18

19

1A

1B

1C

1D

1E

1F

20

21

22

24

25

26

26

27

54

55

56

57

58

59

5A

5B

5C

5D

5E

5F

60

61

62

63

64

65

66

67

[6]

Command Table

Instruction

Instruction code

Description

Execution

time (fosc=

270 KHZ

RS R/W

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

Clear

Display

0 0 0 0 0 0 0 0 0 1

Write “20H” to DDRA and

set

DDRAM address to “00H”

from AC

1.53ms

Return

Home

0 0 0 0 0 0 0 0 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

Entry mode

Set

0 0 0 0 0 0 0 1 I/D SH

Assign cursor moving

direction

And blinking of entire

display

39us

Display ON/

OFF control

0 0 0 0 0 0 1 D C B

Set display (D), cursor (C),

and

Blinking of cursor (B) on/off

Control bit.

Cursor or

Display

shift

0 0 0 0 0 1 S/C

R/L

- -

Set cursor moving and

display

Shift control bit, and the

Direction, without changing

of

DDRAM data.

39us

Function

set

0 0 0 0 1 DL N F - -

Set interface data length

(DL: 8-

Bit/4-bit), numbers of

display

Line (N: =2-line/1-line) and,

Display font type (F:

5x11/5x8)

39us

Set

CGRAM

Address

0 0 0 1 AC5

AC4 AC3

AC2

AC1

AC0

Set CGRAM address in

address counter.

39us

Set

DDRAM

Address

0 0 1 AC6

AC5

AC4

AC3

AC2

AC1

AC0

Set DDRAM address in

address counter.

39us

Read busy

Flag and

Address

0 1 BF AC6

AC5

AC4

AC3

AC2 AC1

AC0

Whether during internal

Operation or not can be

known

By reading BF. The

contents of

Address counter can also

be read.

0us

Write data

To Address

1 0 D7 D6 D5 D4 D3 D2 D1 D0

Write data into internal

RAM

(DDRAM/CGRAM).

43us

Read data

From RAM

1 1 D7 D6 D5 D4 D3 D2 D1 D0

Read data from internal

RAM

(DDRAM/CGRAM).

43us

P1-P3 P4-P6 P7-P9 P10-P10

NHD-0420AZ-FSW-GBW-33V3

Mfr. #:

Buy NHD-0420AZ-FSW-GBW-33V3

Manufacturer:

Newhaven Display

Description:

LCD Character Display Modules & Accessories STN- GRAY Transfl 77.5 x 47.0

Lifecycle:

New from this manufacturer.

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NHD-0420AZ-FSW-GBW-33V3