LCD Alphanumeric Display

LCD alphanumeric display
LCD alphanumeric display ADM0802A
Model No. ADM0802A
►LCD alphanumeric display
►Character LCD

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Product Details

LCD alphanumeric display

LCD alphanumeric display ADM0802A

Model No. ADM0802A

►LCD alphanumeric display

►Character LCD

►5 x 8 dots includes cursor

►Built-in controller ST7066

►5V power supply

►1/16 duty cycle

Description of LCD alphanumeric display ADM0802A

LCD alphanumeric display 8x2 Blue Character LCD Module,White LED Backlight. LCD alphanumeric display ADM0802A uses ST7066 controller,wide temp,white led backlight,5v or 3.3v power.

Features

1.5x8 dots

2.Built-in controller (ST7066 or Equivalent)

3.+5.0 V power supply

4.1/16 duty cycle

5.Easy interface with 4-bit or 8-bit MPU

6.LED backlight optional

7.8x2 characters

Outline dimension

1.jpg

Absolute maximum ratings

Item

Symbol

Standard

Unit

Power voltage

VDD-VSS

-0.3

-

7.0

V

Input voltage

VIN

-0.3

-

VDD+0.3

Operating temperature range

Top

0

-

+50

Storage temperature range

Tst

-10

-

+60

*Wide temperature range is available

(operating/storage temperature as –20~+70/-30~+80℃)

Block diagram

2(001).jpg

Interface pin description

Pin no.

Symbol

External connection

Function

1

VSS

Power supply

Signal ground for LCM (GND)

2

VDD

Power supply for logic for LCM

3

V0

Contrast adjust

4

RS

MPU

Register select signal

5

R/W

MPU

Read/write select signal

6

E

MPU

Operation (data read/write) enable signal

7~10

DB0~DB3

MPU

Four low order bi-directional three-state data bus lines.
Used for data transfer between the MPU and the LCM.
These four are not used during 4-bit operation.

11~14

DB4~DB7

MPU

Four high order bi-directional three-state data bus lines.
Used for data transfer between the MPU

15

A


LED+

16

K

LED-

4.jpg

Description of ST7066 controller.

The ST7066 dot-matrix liquid crystal display controller and driver LSI displays alphanumeric,

Japanese kana characters, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a 4- or 8-bit microprocessor. Since all the functions such as display RAM, character generator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internally provided on one chip, a minimal system can be interfaced with this controller/driver.

The ST7066 has pin function compatibility with the HD44780, KS0066U and SED1278 that allows the

user to easily replace it with an ST7066. The ST7066 character generator ROM is extended to generate

208 5 x 8 dot character fonts and 32 5 x 11 dot character fonts for a total of 240 different character fonts. The low power supply (2.7V to 5.5V) of the ST7066 is suitable for any portable battery-driven product requiring low power dissipation. The ST7066 LCD driver consists of 16 common

signal drivers and 40 segment signal drivers which can extend display size by cascading segment driver ST7065 or ST7063. The maximum display size can be either 80 characters in 1-line display or 40 characters in 2-line display. A single ST7066 can display up to one 8-character line or two 8-character lines.

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