I:\New Datasheet\LET\TC4002A

I:\New Datasheet\LET\TC4002A

LCD Module User Manual

Customer

Ordering CODE

DRAWING NO.

Approved By Customer:

:

: TC4002A-01XA0

: m-TC4002A-01XA0_A00

Date:

Approved By Checked By Prepared By

TC4002A-02WA0_A00 Page 1 of 18

Contents

1. Precautions in Use of LCD Module-----------------------------------P3

2. General Specification-------------------------------------------------------P3

3. Absolute Maximum Ratings----------------------------------------------P3

4. Electrical Characteristics--------------------------------------------------P4

5. Backlight Information-------------------------------------------------------P4

6. Optical Characteristics-----------------------------------------------------P5

7. Interface Description--------------------------------------------------------P6

8. Contour Drawing & Block Diagram--------------------------------------P7

9. Application circuit----------------------------------------------------------P8

10. LCD Function Description-----------------------------------------------P8

11. User instruction Definitions--------------------------------------------P10

11.1 Instruction table----------------------------------------------------P10

11.2 Instruction description --------------------------------------------P11

12. Timing Characteristics -------------------------------------------------P14

13. Initializing flow chart ----------------------------------------------------P15

14. Standard Character pattern-----------------------------------P17

15.Revision records------------------------------------------------------P18

TC4002A-02WA0_A00 Page 2 of 18

1. Precautions in Use of LCD Module

(1) Avoid applying excessive shocks to the module or making any alterations or modifications to it.

(2) Don’tmake extra holes on the printed circuit board, modify its shape or change the components of LCD

Module.

(3) Don’tdisassemble the LCM.

(4) Don’toperate it above the absolute maximum rating.

(5) Don’tdrop, bend or twist LCM.

(6) Soldering: only to the I/O terminals.

⑺ Storage: please storage in anti-static electricity container and clean environment.

2. General Specification

ITEM STANDARD VALUE UNIT

Number of dots 40X2 CHARS Dots

Outline dimension 182.0(W)X33.5(H)X13.1MAX.(T) mm

View area

Active area

Dot size

Dot pitch

155.0(W)X16.0(H)

75.40(W)X11.5(H)

0.60(W)X0.65(H)

0.65(W)X0.70(H) mm mm mm mm

LCD type

View direction

Backlight

STN, Yellow-Green,Positive,Transflective

6 o’clock

Side Yellow-Green LED

Controller SPLC780D1-001,Parallel interface

3. Absolute Maximum Ratings

ITEM SYMBOL MIN.

Operating Temperature T

OP

-20

TYP.

-

MAX.

+70

Storage Temperature

Input Voltage

T

ST

V

I

-30

0

-

-

+80

V

DD

Supply Voltage For Logic

Supply Voltage For LCD

V

DD

V

DD

-V

EE

0

0

-

-

5.5

5

UNIT

V

V

V

TC4002A-02WA0_A00 Page 3 of 18

4. Electrical Characteristics

ITEM SYMBOL CONDITION MIN.

Logic Voltage V

DD

-V

SS

-

4.5

TYP.

MAX.

UNIT

5.0

5.5

V

Supply Volt.For LCD

Input High Volt.

Input Low Volt.

Output High Volt.

V

DD

-V

O

V

IH

V

IL

V

OH

V

OL

Ta=25℃

-

-

I oH

=-0.2mA

---

2.0

-0.3

2.4

4.7

-

-

-

Output Low Volt.

I oL

=1.6mA

0

-

Supply Current I

DD

-

--1.0

5. Backlight Information

Absolute Maximum ratings

(

Ta=25

℃ )

Item Symbol

Reverse voltage

Reverse Current

Vr

I r

Absolute maximum forward Current Ifm

Conditions

-

Vr=5.0V

Peak forward current

Power dissipation

Operating Temperature Range

Ifp

P d

T oper

I msec plus 10% Duty Cycle

Storage Temperature Range Tst

Electrical/Optical Characteristics (Ta=25

o

C,If=80mA)

Color

Wavelength

λ p(nm)

Spectral line half widthΔλ(nm)

Operating

Voltage(v)

(±0.15V)

Yellow-Green

----3.1

---

V

DD

0.8

V

DD

0.4

---

Rating

5.0

---

---

400

1400

-30~+70

-40~+80

V

V

V

V

V mA

Unit

V uA mA mA mW

Forward

Current (mA)

80

TC4002A-02WA0_A00 Page 4 of 18

6. Optical Characteristics

ITEM SYMBOL CONDITION MIN TYP MAX

View Angle (V)θ CR≧2 10

120

(H)φ CR≧2 -45

45

Contrast Ratio

Response

Time

CR

T rise

T fall

5 -

200 300

150 200

UNIT deg.

deg.

- ms ms

TC4002A-02WA0_A00 Page 5 of 18

7.Interface Description

Pin No.

Symbol

5

6

3

4

1

2

7~14 DB0~DB7

15 A(LED+)

16 K(LED-)

V

SS

V

DD

V

0

RS

RW

E

Level Description

0V

5.0V

Ground

Power supply for Logic

(Variable) Driving voltage for LCD

H/L H:Data L :Instruction

H/L

H/L

H:Read

Enable signal

L:Write

H/L

+5V

0V

Data bus. DB7 is used for Busy Flag .

Anode of LED Backlight

Cathode of LED Backlight

TC4002A-02WA0_A00 Page 6 of 18

8. Contour Drawing & Block Diagram

TC4002A-02WA0_A00 Page 7 of 18

9. Application circuit

10. LCD Function Description

The LCD display Module is built in a LSI controller, the controller has two 8-bit registers, an instruction register (IR) and a data register (DR).

The IR stores instruction codes, such as display clear and cursor shift, and address information for display data RAM (DDRAM) and character generator (CGRAM). The IR can only be written from the MPU. The DR temporarily stores data to be written or read from

DDRAM or CGRAM. When address information is written into the IR, then data is stored into the DR from DDRAM or CGRAM.

By the register selector (RS) signal, these two registers can be selected.

Various Kinds of Operations according to RS and R/W Bits

RS R/W Operation

0 0 IR write as an internal operation (display clear, etc.)

0

1

1

0

Read busy flag (DB7) and address counter (DB0 to DB7)

Write data to DDRAM or CGRAM (DR to DDRAM or CGRAM)

1 1 Read data from DDRAM or CGRAM (DDRAM or CGRAM to DR)

Busy Flag (BF)

When the BF= "High", it indicates that the LCM internal operation is being processed. So during this time the next instruction cannot be accepted. BF can be read, when RS = Low and R/W = High (Read Instruction Operation), through DB7 port. Before executing the next instruction, be sure that BF is not High.

Address Counter (AC)

Address Counter(AC) stores DDRAM/CGRAM address. After writing into (reading from)

DDRAM/CGRAM, AC is automatically increased (decreased) by 1. When RS = "Low" and

R/W = "High", AC can be read through DB0 - DB6 ports.

TC4002A-02WA0_A00 Page 8 of 18

Display Data RAM (DDRAM)

This DDRAM is used to store the display data represented in 8-bit character codes. Below figure is the relationships between DDRAM addresses and positions on the liquid crystal display.

High bits Low bits

Example: DDRAM addresses 4E

AC (hexadecimal)

AC6 AC5 AC4 AC3 AC2 AC1 AC0

LCD DDRAM Address(In HEX)

1 0 0 1 1 1 0

No.

1 2 3 4 5

40 Chars X 2 Lines Display

6 7 8 9 10 11 … 37 38 39 40

1 st Line 00 01 02 03 04 05 06 07 08 09 0A … 24 25 26 27

2 nd Line 40 41 42 43 44 45 46 47 48 49 4A … 64 65 66 67

Character Generator ROM (CGROM)

The CGROM generate 5×8 dot or 5×10 dot character patterns from 8-bit character codes.

See “Standard Character pattern”.

Character Generator RAM (CGRAM)

In CGRAM, the user can rewrite character by program. Relationship between Character

Code (DDRAM) and Character Pattern (CGRAM) shown below.

Char Code(DDRAM data) CGRAM address CGRAM data

D7 D6 D5 D4 D3 D2 D1 D0 A5 A4 A3 A2 A1 A0 P7 P6 P5 P4 P3 P2 P1 P0

0 0 0 0 X 0 0 0 0 0 0 0 0 0 X X X 0 1 1 1 0

0 0 1 1 0 0 0 1

.

.

.

.

.

.

0 1 0

0 1 1

.

.

.

1 0 0 0 1

1 1 1 1 1

.

.

.

.

.

.

.

.

1 0 0

1 0 1

1 1 0

1 1 1

.

.

.

.

1 0 0 0 1

1 0 0 0 1

1 0 0 0 1

0 0 0 0 0

.

.

.

.

.

.

.

.

.

.

.

.

0 0 0 0 X 1 1 1 1 1 1 0 0 0 X X X 1 0 0 0 1

.

.

0 0 1

.

1 0 0 0 1

.

.

.

.

0 1 0

0 1 1

.

.

1 0 0 0 1

1 1 1 1 1

.

.

.

.

.

.

.

.

1 0 0

1 0 1

1 1 0

1 1 1

.

.

.

.

1 0 0 0 1

1 0 0 0 1

1 0 0 0 1

0 0 0 0 0

Pattern number

Pattern 1

.

.

.

Pattern 8

X”: don’t care

TC4002A-02WA0_A00 Page 9 of 18

11. User instruction Definitions

11.1 Instruction table

Instruction

Clear

Display

Return

Home

Entry Mode

Set

Display

ON/OFF control

Cursor or

Display Shift

Set CGRAM

Address

Set DDRAM

Address

Read Busy

Flag and

Address

Write Data to

RAM

Read Data from RAM

0

0

0

0

0

Function Set 0

0

0

0

1

1

Instruction Code

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Description

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

1

DL

0

0

0

1

S/C R/L

N

0

0

1

D

F

0

1

I/D SH

C

X

X

1

X

B

X

X

1 AC5 AC4 AC3 AC2 AC1 AC0

AC6 AC5 AC4 AC3 AC2 AC1 AC0

1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0

0

1

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

Write “20H”to DDRAM and set DDRAM address to “00H”from AC.

Set DDRAM address to

“00H”from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed.

Assign cursor moving direction and make shift of entire display enable.

Set display(D), cursor(C), and blinking of cursor(B) on/off control bit.

Set cursor moving and display shift control bit, and the direction, without changing DDRAM data.

Set interface data length(DL:4-bit/8-bit), numbers of display line(N:

1-line/2-line), display font type(F: 5X8 dots/ 5X11 dots)

Set CGRAM address in address counter.

Set DDRAM address in address counter.

Whether during internal operation or can not be known by reading BF. The contents of address counter can also be read.

Write data into internal

RAM DDRAM/CGRAM).

Read data from internal

RAM (DDRAM/CGRAM).

Execution time f

OSC

=270KHz)

1.52ms

1.52ms

37µ s

37µ s

37µ s

37µ s

37µ s

37µ s

0µ s

43µ s

43µ s

Remark:‘X’don’t care

TC4002A-02WA0_A00 Page 10 of 18

11.2 Instruction Description

1)Clear Display

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 0 0 0 0 0 0 1

Clear all the display data by writing "20H" (space code) to all DDRAM address, and set

DDRAM address to "00H" into AC (address counter). Return cursor to the original status.

Namely, bring the cursor to the left edge on first line of the display. Make entry mode increment (I/D = "1").

2) Return Home

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 0 0 0 0 0 1

-

Return Home is cursor return home instruction. Set DDRAM address to "00H" into the address counter. Return cursor to its original site and return display to its original status, if shifted. Contents of DDRAM do not change.

3) Entry Mode Set

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

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

Set the moving direction of cursor and display.

I/D: Increment / decrement of DDRAM address (cursor or blink)

When I/D = "High", cursor/blink moves to right and DDRAM address is increased by 1.

When I/D = "Low", cursor/blink moves to left and DDRAM address is decreased by 1.

* CGRAM operates the same as DDRAM, when read from or write to CGRAM.

SH: Shift of entire display

When DDRAM read (CGRAM read / write) operation or SH = "Low", shift of entire display is not performed. If SH = "High" and DDRAM write operation, shift of entire display is performed according to I/D value:

I/D ="1" : shift left,

I/D = "0" : shift right.

4) Display ON/OFF Control

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 0 0 0 1 D C B

Control display / cursor / blink ON / OFF 1 bit register.

D: Display ON / OFF control bit

When D = "High", entire display is turned on.

When D = "Low", display is turned off, but display data is remained in DDRAM.

C: Cursor ON / OFF control bit

When C = "High", cursor is turned on.

When C = "Low", Cursor is disappeared in current display, but I/D register remains its data.

B: Cursor Blink ON / OFF control bit

When B = "High", cursor blink is on, that performs alternate between all the high data and display character at the cursor position.

When B = "Low", blink is off.

TC4002A-02WA0_A00 Page 11 of 18

5) Cursor or Display Shift

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 0 0 1 S/C R/L -

Shifting of right/left cursor position or display Without Writing or reading of display data, shift right/left cursor position or display. This instruction is used to correct or search display data. (refer to Table 4) During 2-line mode display, cursor moves to the 2nd line after 40th digit of 1st line. Note that display shift is performed simultaneously in all the line. When displayed data is shifted repeatedly, each line shifted individually. When display shift is performed, the contents of address counter are not changed.

S/C R/L Operation

0

0

0

1

Shift the cursor to the left, AC is decreased by 1.

Shift the cursor to the right, AC is increased by 1.

1

1

0 Shift all the display to the left, cursor moves according to the display.

1 Shift all the display to the right, cursor moves according to the display.

6) Function Set

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 0 1 DL N F -

DL: Interface data length control bit

When DL = "High", it means 8-bit bus mode with MPU.

When DL = "Low", it means 4-bit bus mode with MPU.

When 4-bit bus mode, it needs to transfer 4-bit data by two times.

N: Display line number control bit

When N = "Low", it means 1-line display mode.

When N = "High", 2-line display mode is set.

F: Display font type control bit

When F = "Low", it means 5 x 8 dots format display mode

When F = "High", 5 x11 dots format display mode.

7) Set CGRAM Address

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 0 1

AC5 AC4 AC3 AC2 AC1 AC0

Set CGRAM address to AC. This instruction makes CGRAM data available from MPU.

8) Set DDRAM Address

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0

Set DDRAM address to AC.

This instruction makes DDRAM data available from MPU. When 1-line display mode (N = 0),

DDRAM address is from "00H" to "4FH". In 2-line display mode (N = 1), DDRAM address is the 1st line is from "00H" to "27H", and DDRAM address in the 2nd line is from "40H" to

"67H".

TC4002A-02WA0_A00 Page 12 of 18

9) Read Busy Flag & Address

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

0

1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0

This instruction shows whether LCM is in internal operation or not. If the resultant BF is

High, it means the internal operation is in progress and you have to wait until BF to be Low, and then the next instruction can be performed. In this instruction you can read also the value of address counter.

10) Write data to RAM

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

1 0 D7 D6 D5 D4 D3 D2 D1 D0

Write binary 8-bit data to DDRAM/CGRAM.

The selection of RAM from DDRAM, CGRAM, is set by the previous address set instruction:

DDRAM address set, CGRAM address set. RAM set instruction can also determine the AC direction to RAM. After write operation, the address is automatically increased/decreased by 1, according to the entry mode.

11) Read data from RAM

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

1 1 D7 D6 D5 D4 D3 D2 D1 D0

Read binary 8-bit data from DDRAM/CGRAM.

The selection of RAM is set by the previous address set instruction. If address set instruction of RAM is not performed before this instruction, the data that read first is invalid, because the direction of AC is not determined. If you read RAM data several times without

RAM address set instruction before read operation, you can get correct RAM data from the second, but the first data would be incorrect, because there is no time margin to transfer

RAM data.

In case of DDRAM read operation, cursor shift instruction plays the same role as DDRAM address set instruction : it also transfer RAM data to output data register. After read operation address counter is automatically increased/decreased by 1 according to the entry mode.

After CGRAM read operation, display shift may not be executed correctly.

* In case of RAM write operation, after this AC is increased/decreased by 1 like read operation. In this time, AC indicates the next address position, but you can read only the previous data by read instruction.

TC4002A-02WA0_A00 Page 13 of 18

12. Timing Characteristics

TC4002A-02WA0_A00 Page 14 of 18

13.Initializing flow chart

l

8-bit interface mode

TC4002A-02WA0_A00 Page 15 of 18

l

4-bit interface mode

TC4002A-02WA0_A00 Page 16 of 18

14. Standard Character pattern

TC4002A-02WA0_A00 Page 17 of 18

15. Revision records

Version Ref.pages

A00

Revision

Items

All Pages New release

Date

2005.03.01

TC4002A-02WA0_A00 Page 18 of 18

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