Industrial LCD Display

Industrial LCD Display

Industrial LCD display
Industrial LCD display ADM16032B
Model No. ADM16032B
►Industrial LCD display 160x32, Display LCD 160x32
►Monochrome Graphic LCD

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Product Details

Industrial LCD display

Industrial LCD display ADM16032B

Model No. ADM16032B

►Industrial LCD display 160x32, Display LCD 160x32

►Monochrome Graphic LCD

►Built-in controller ST7920

►+2.7v~+5.5v power supply supply

►1/32duty

►64x256 bit graphic display RAM

►4 bit, 8 bit, serial interface

Description of Industrial LCD display ADM16032B

Industrial LCD display ADM16032B can handle the toughest environments and integrate seamlessly with your current systems. Industrial LCD display ADM16032B also requires very low power consumption.

Features

1、160x32 dots with 8192 chinese character fonts (16x16)

2、128 alpha-numerical fonts (16x8)

3、64x256 bit graphic display RAM

4、Strong display control functions:

Vertical scroll, horizontal bit scroll, line reverse etc

5、+2.7V~+5.5V power supply

6、1/32 duty

7、building boost circuit

8、4 bit, 8 bit, serial interface

9、LED backlight optional

Outline dimension

1.jpg

Absolute maximum ratings

Item

Symbol

Standard

Unit

Power supply voltage

VDD-VSS

-0.3

-

6.0

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.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

LED+

LED BKL power supply

Power supply for BKL (Anode)

16

LED-

Power supply for BKL (GND)

Optical characteristics

STN type display module (Ta=25℃, VDD=5.0V)

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Viewing angle

θ

Cr≥2

-60

-

35

deg

Φ

-40

-

40

Contrast ratio

Cr

 

-

8

-

-

Response time (rise)

Tr

-

-

200

250

ms

Response time (fall)

Tr

-

-

300

350

Electrical characteristics

DC characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Supply voltage for LCD

V0-Vss

Ta =25℃  V=+5V

-

6.5

-

V

Input voltage

VDD

V=3.3V

2.7

3.3

5.5

V=5V

4.7

5.0

5.5

Supply current

IDD

Ta=25℃, VDD=5.0V

-

2

4

mA

Input leakage current

ILKG

 

-

-

1.0

uA

“H” level input voltage

VIH

 

2.2

-

VDD

V

“L” level input voltage

VIL

Twice initial value or less

0

-

0.6

“H” level output voltage

VOH

LOH=-0.25mA

2.4

-

-

“L” level output voltage

VOL

LOH=1.6mA

-

-

0.4

Backlight supply voltage

VF

 

-

-

-

AC Characteristics (TA = -30℃ ~ 85℃, VDD = 4.5V) Parallel Mode Interface

Symbol

Characteristics

Test Condition

Min.

Typ.

Max.

Unit

Internal Clock Operation

fOSC

OSC Frequency

R = 33KW

480

540

600

KHz

External Clock Operation

fEX

External Frequency

-

480

540

600

KHz

 

Duty Cycle

-

45

50

55

%

TR,TF

Rise/Fall Time

-

-

-

0.2

ms

Write Mode (Writing data from MPU to ST7920)

TC

Enable Cycle Time

Pin E

1200

-

-

ns

TPW

Enable Pulse Width

Pin E

140

-

-

ns

TR,TF

Enable Rise/Fall Time

Pin E

-

-

25

ns

TAS

Address Setup Time

Pins: RS,RW,E

10

-

-

ns

TAH

Address Hold Time

Pins: RS,RW,E

20

-

-

ns

TDSW

Data Setup Time

Pins: DB0 - DB7

40

-

-

ns

TH

Data Hold Time

Pins: DB0 - DB7

20

-

-

ns

Read Mode (Reading Data from ST7920 to MPU)

TC

Enable Cycle Time

Pin E

1200

-

-

ns

TPW

Enable Pulse Width

Pin E

140

-

-

ns

TR,TF

Enable Rise/Fall Time

Pin E

-

-

25

ns

TAS

Address Setup Time

Pins: RS,RW,E

10

-

-

ns

TAH

Address Hold Time

Pins: RS,RW,E

20

-

-

ns

TDDR

Data Delay Time

Pins: DB0 - DB7

-

-

100

ns

TH

Data Hold Time

Pins: DB0 - DB7

20

-

-

ns

FAQ

1.What are the System interface ?

The ADM16032B supports 3 kinds of bus interface to communicate with MPU: 8-bit parallel, 4-bit parallel and clock synchronized serial interface. Parallel interface is selected by PSB=”P” and serial interface is by PSB=”S”. 8-bit / 4-bit interface is selected by function set instruction DL bit.

2.What is Busy Flag (BF) ?

The LCD module needs a process time for any received instruction. Before finishing the received instruction, any further instruction is not accepted. The process time of each instruction is not equal and the internal process is finished or not can be determined by the BF. Internal operation is in progress while BF=”1”, that means module is in busy state. No further instructions will be accepted until BF=”0”. MPU must check BF to determine whether the internal operation is finished or not before issuing instruction.

3. What is Character Generation ROM (CGROM) and Half-width Character Generation ROM (HCGROM)?

The LCD module is built in a Character Generation ROM (CGROM) to provide 8192 16x16 character fonts and a Half-width Character Generation ROM to provide 128 8x16 alphanumeric characters. It is easy to support multi-language applications such as Chinese and English. Two consecutive bytes are used to specify one 16x16 character or two 8x16 half-width characters. Character codes are written into DDRAM and the corresponding fonts are mapped from CGROM or HCGROM to the display drivers.

4. What is Character Generation RAM (CGRAM) ?

The LCD module is built in a Character Generation RAM (CGRAM) to support user-defined fonts. Four sets of 16x16 bit-mapped RAM spaces are available. These user-defined fonts are displayed the same ways as CGROM fonts by writing the related character code into the DDRAM.

Function Description

Display Data RAM (DDRAM)

There are 64x256 bytes RAM spaces for the Display Data RAM. It can store display data such as 10 characters (16x16) by 2 lines or 32 characters (8x16) by 4 lines. However, only 2 character-lines (maximum 32 common outputs) can be displayed at one time. Character codes stored in DDRAM will refer to the fonts specified by CGROM, HCGROM and CGRAM. The LCD module can display half-width HCGROM fonts, user-defined CGRAM fonts and full 16x16 CGROM fonts. The character codes in 0000H~0006H will use user-defined fonts in CGRAM. The character codes in 02H~7FH will use half-width alpha numeric fonts. The character code larger than A1H will be treated as 16x16 fonts and will be combined with the next byte automatically. The 16x16 BIG5 fonts are stored in A140H~D75FH while the 16x16 GB fonts are stored in A1A0H~F7FFH. In short:

1. To display HCGROM fonts:

Write 2 bytes of data into DDRAM to display two 8x16 fonts. Each byte represents 1 character. The data is among 02H~7FH.

2. To display CGRAM fonts:

Write 2 bytes of data into DDRAM to display one 16x16 font. Only 0000H, 0002H, 0004H and 0006H are acceptable.

3. To display CGROM fonts:

Write 2 bytes of data into DDRAM to display one 16x16 font. A140H~D75FH are BIG5 code, A1A0H~F7FFH are GB code.

The higher byte (D15~D8) is written first and the lower byte (D7~D0) is the next.

Please refer to Table 1 for the relationship between DDRAM and the address/data of CGRAM.

CGRAM fonts and CGROM fonts can only be displayed in the start position of each address. (Refer to Table 4)

4.jpg

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